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1
Lucry, Line. "Synthèse d'octahydropyrimido[1,2-a]-s-triazines à potentialité thérapeutique." Rouen, 2000. http://www.theses.fr/2000ROUEA004.
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La pharmacomudolation autour du squelette [1,2-α]-s-triazinique a permis de tirer les enseignements suivants tant sur le plan chimique que sur le plan pharmacochimique. L'étude de l'alkylation du malonate de diéthyle montre la difficulté d'obtenir un dérivé monoalkylé pur. Cette difficulté peut être résolue en jouant sur les solubilités des produits monoalkylés, diakylés et non alkylés. La fabrication des synthons dialkylés de type 2-iminobarbiurique a montré qu'ils se trouvaient préférentiellement sous la forme amino-iminique. Leur alkylation directe s'effectue sur l'azote intracyclique. La forme majoritaire devient alors la forme iminodioxo. En revanche, pour les dérivés monoalkylés, la structure donne lieu à un équilibre entre une forme bétaïnique mésomère et une forme aromatique. La synthèse de pyrimido [1,2-α] -s-triazines, par iminodiméthylation de synthons 2-iminobabituriques dialkilés, conduit à des pyrimido-s-triazines ayant un fonction imino-alcool conjuguée. Quant aux dérivés monoalkylés, ils conduisent essentiellement aux composés dans lesquels le noyau phényle est toujours substitué. La plupart des molécules essayées l'ont été sous leur forme racémique. Ces résultats se sont révélés dans le domaine des récepteurs sérotoninergiques 5-HT 1A et 5-HT 2A, adrénergique α-2A et α-2B, antifongique vis-à-vis de Microsporum canis dainsi que pour des toxicités cellulairesThe pharmacomodulation around the [1,2-α]-s-triazine skeleton, has enabled to draw the following conclusions, on the chemical and on the pharmacochemistry level. The study of the diethylmalonate alkylation shows some difficulties in obtaining a single monoalkylated derivative. Those difficulies can be sorted out by playing on the solubility of monoalkylated, diakylated and unalkylated products. The production of type 2-iminobarbituraes dialkylated synthons, has shown that, they were most often found under the amine form. Their direct alkylation operates within intracyclical nitrogen. The most likely obtainable form is then the iminodioxo form. However concerning monoalkylated derivativesn their structure is a tautomerism form, between a mesomeric betaine, and aromatic form. The pyrimido [1,2-α]-s-triazines synthesis through iminodimethylation of synthons dialkylated 2- iminobarbiturates, produces pyrimido-s-triazines with a cojugated imino-alcohol function. As to monoalkylated derivates, they mainly lead to tricyclic compounds with a mesomeric betaine structure. Whenever, the phenyl nucleus is subtituted, the study of testing reveals modest results for these compounds. Among the synthesized molecules, some have been tested under the recemic form. These results have been noticed with serotonergic 5-HT 1A, 5 -HT2 A, adrenergic α-2A and α-2B receptors and fungicidal against Microsporum canis and also cellular toxicities
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Somerset, Mark. "Effects of the s-triazines irgarol and atrazine on bivalve molluscs." Thesis, University of Portsmouth, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502738.
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Enoma, Ferdinand. "Introduction d'un reste aminoacide sur des squelettes [1,2-a] et [3,4-a]-s-triazines." Rouen, 2003. http://www.theses.fr/2003ROUE01NR.
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Dans le but d'améliorer la biodisponibilité et optimiser les propriétés pharmacologiques des composés pyrimido [1, 2-α] et [3,4-α] - s- triazines, un aminoacide qui leur confère une potentielle compatibilité avec les milieux biologiques, a été introduit sur leur squelette s-triazinique. Deux stratégies de synthèse ont été réalisées afin d'accéder aux pharmacophores portant un aminoacide protégé. La première met en oeuvre l'introduction d'un aminoacide protégé sur la fonction acide carboxylique activée des squelettes N-phénylpyrimodo [1,2-α] et [3,4-α]-s-triazines. L'activation est réalisée dans un premier temps avec les composés DCCI/ HOBt qi sont à l'origine d'impuretés difficiles à éliminer. Nous avons améliorer les résultats en utilisant un autre auxiliaire nucléophile qui est la CDMT. La deuxième stratégie de synthèse met en oeuvre la réaction d'iminodiméthylation sur les synthons aminopyrimidinedione et acylurée utilisant une amine aromatique apportant l'aminoacide protégé. 72 pyrimido [1,2-α] et [3,4-α] -s-triazines portant un aminoacide protégé ont été synthétisées. L'introduction des aminoacides a mis en évidence l'instabilité des composés pyrimido [1,2-α] et [3,4-α]-s-triazines qui se manifeste particulièrement lors de l'étape de déprotection des aminoacides protégésThe aim of the work was to improve the biodisponibility an the pharmacological properties of pyramido [1,2-α] and [3,4-α] - s-triazines by introducing an aminoacid on the triazines nucleus. Two synthetic pathways were designed to access to compound bearing an aminoacid. The first one consists in introducing a protected aminoacid on the activited carboxylic function of pharmacophores N-phenylpyrimido [1,2-α] and [3,4-α] -s-triazines. In a first time, activation was realised by DCCI/ HOBt, but this process generated side products which were difficult to separate. Another nucleophile auxiliary ; CDMT gave better results avoiding side products an improving the yields. The second strategy consisted in iminodimethylation of aminopyrimidinedione synthons using an aromatic amine bearing the protected aminoacid. 72 pyrimido [1,2-α] and [3,4-α]-s-triazines bearing protected aminoacid could be synthesized. The instability of these compounds was specilally observed, during the deprotecting experiments
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Zhang, Qian Amy. "Ecotoxicities and ecological risks of irgarol 1051 and its related s-triazine compounds in tropical marine ecosystems." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B41757956.
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Rihn, Sandra. "Construction et étude de composés fluorescents à base d'unités hydroxyphényl-s-triazines et boradiazaindacènes." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-01018647.
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Les travaux réalisés dans le cadre de la thèse avaient pour but la synthèse de nouveaux fluorophores basés sur les unités BODIPYs et hydroxyphényl-s-triazines. Pour être utilisées comme sondes efficaces dans des applications en chimie et en biologie, les chromophores doivent présenter une forte brillance et des rendements quantiques de fluorescence élevés, une modulation aisée de ses propriétés optiques ainsi qu'une bonne stabilité chimique et photochimique. Une stratégie originale et efficace a été développée pour l'obtention de dérivés d'o-hydroxyphényl-s-triazine. Ces derniers présentent des déplacements de Stokes anormalement élevés ayant pour origine un transfert de proton intramoléculaire ultrarapide à l'état excité (ESIPT). L'extension du système π-conjugué sur les différentes plateformes de départ a été réalisée par couplages pallado-catalysés et/ou condensation de Knoevenagel, permettant ainsi d'accéder à une large gamme spectrale en absorption et en émission. Le développement d'une nouvelle voie de synthèse à permis l'obtention d'oligo-BODIPYs par couplage oxydant réalisé en associant PIFA et un acide de Lewis. Toutes les propriétés photophysiques des nouvelles sondes ont été étudiées et ont fait l'objet de discussions détaillées.
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Leung, Kevin Shurch-Yee. "Adsorption interactions of s-triazine herbicides and natural organic matter by activated carbon /." free to MU campus, to others for purchase, 2000. http://wwwlib.umi.com/cr/mo/fullcit?p9988683.
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Jasso, Alfredo Rosales. "Synthesis and mode of action of gem-dimethylated and alkylamino-s-triazines stabilisers in polyolefins." Thesis, Manchester Metropolitan University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307589.
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Ghaib, Amar. "Pharmacomodulation autour du squelette octahydropyrimido[3,4-a]-s-triazines : introduction de restes alkyles de lipophilie croissante." Rouen, 2001. http://www.theses.fr/2001ROUE03NR.
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L'iminodiméthylation de six monoalkyl ou dialkyl 5-aminopyrimidine-l,3-diones par différentes amines primaires fait l'objet de cette étude. La préparation de ces synthons est réalisée à partir de cyanacétates d'éthyles, préalablement alkylés en position 2, qui réagissent avec l'urée, en milieu alcalin. L'alkylation de méthylènes fortement activés qui sont situés entre une fonction nitrile et un groupement ester, en milieu alcalin, conduit à un mélange de dérivés non alkylé, monoalkylé et dialkylé. Il s'est avéré nécessaire d'utiliser les différences de solubilité des sels de ces composés pour les séparer. Dans le but d'éviter ces difficultés, deux autres procédés de synthèse ont été utilisés. L'iminodiméthylation des synthons 5 dialkyl-6-aminopyrimidine-l,3-dione a conduit à 24 octahydropyrimido[3,4-a]-s-triazines, diversement dialkylées qui ont été soumises à un triage pharmacologique automatisé, orienté en particulier dans le domaine antimicrobien. Une série de 23 pyrimido[3,4-a]-s-triazines monoalkylées sur le sommet 9 ont été préparées par iminodiméthylation de 5-monoalkyl-6-aminopyrimidine-1,3-diones. Il a été montré que la structure de ces composés étant triazinique et non pyrimido pyrimidinique comme cela aurait pu être le cas. Ces composés, en dépit d'un bon recouvrement structural avec la Kétansérine, un anti 5-HT2 bien connu, n'ont fait preuve que d'une faible activité dans les conditions de l'essai automatiséIminodimethylation of 6 monoalkyl and dialkyl 5-aminopyrimidinediones by various primary amines was studied. The synthesis of these synthons was performed from ethyl cyanacetates, previously alkylated in 2 position, which reacted with area in alkaline medium. Alkylation of the strongly activated methylenes, situated between a nitrile and an ester groupe, in alkaline medium, leads to a mixture of unalkylated, monoalkylated and dialkylated derivatives. It was then necessary to use the différences of solubilities of the salts of theses compounds to separated them. In order to avoid these difficulties, two other synthetic pathways were used. Iminodimethylation of these synthons yielded 24 octahydropyrimido[3,4-a]-striazines, variously dialkylated, which were submitted to an automated pharmacological screening, especially in the area of antimicrobial agents. A series of 23 pyrimido[3,4-a]-s-triazines monoalkylated in position 9 were synthetized by iminodimethylation of 5-monoalkyl-6-aminopyrimidine 1,3-diones. It was shown that the structure was triazinic and not pyrimido pyrimidinic as it could have been. These compounds, despite a good overlay with Ketanserin, a well known anti 5-HT2, only showed a weak activity in automated screening
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Wartenberg, Mylène. "Régulation de l'activité protéolytique des cathepsines à cystéine S et K par des inactivateurs/inhibiteurs chimiques et pseudopeptidiques." Thesis, Tours, 2018. http://www.theses.fr/2018TOUR3318.
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La cathepsine (Cat) S est une protéase ciblée pour le développement de médicaments utilisés dans les maladies auto-immunes ou la douleur neuropathique. Elle joue également un rôle clé durant l’emphysème compte tenu de ses propriétés élastinolytiques. La Cat K, qui est une collagénase impliquée dans la résorption osseuse, représente une cible pertinente dans le traitement de l’ostéoporose et des métastases osseuses. De plus ces deux protéases sont des protagonistes majeurs du remodelage matriciel et l’homéostasie pulmonaire. Lors de la BPCO, la dégradation tissulaire bronchique est associée à une réaction inflammatoire qui s’accompagne d’un stress oxydatif et d’un déséquilibre de la balance protéases/antiprotéases. L'exposition à la fumée de cigarette constitue le principal facteur de risque dans la BPCO. Malgré la présence d'une cystéine nucléophile (Cys25) dans son site actif, nous avons constaté que la Cat S conserve partiellement son activité enzymatique après exposition à la fumée de cigarette. Ainsi, nous avons exploré les mécanismes soutenant la stabilité de la Cat S, en présence d’oxydants majeurs de la fumée de cigarette : peroxyde d’hydrogène, formaldéhyde, acroléine et peroxynitrite. Par ailleurs, dans le but de réguler l'activité des cathepsines à cystéine K et S, nous avons développé des inhibiteurs pseudopeptidiques de nouvelle génération dérivés de séquences substrats des cathepsines S et K ainsi que des dérivés triazinesCathepsin (Cat) S is an attractive target for drugs in autoimmune diseases or neuropathic pain. Moreover Cat S plays a key role during emphysema according to its potent elastinolytic activity. Cat K is a critical bone-resorbing collagenase and is a relevant target for the treatment of osteoporosis and bone metastasis. Both enzymes play a key role in matrix remodeling and pulmonary homeostasis. During COPD, the degradation of pulmonary parenchyma depends on inflammatory reactions associated with oxidative stress and proteases/antiproteases imbalance. Exposure to cigarette smoke, a major source of oxidants, is the main risk factor for COPD. Despite the presence of a nucleophilic cysteine (Cys25) within its active site, we found that CatS preserved partially its proteolytic activity after exposure to cigarette smoke extract (CSE). Thus, we have explored molecular mechanisms supporting this stability in the presence of selected major CSE oxidants: hydrogen peroxide, formaldehyde, acrolein and peroxynitrite. In the other hand, we have designed innovative pseudopeptidic inhibitors derived from selective substrates of cathepsin S and K as well triazine derivatives in order to regulate the activity of cathepsins K and S
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Zhang, Qian Amy, and 張倩. "Ecotoxicities and ecological risks of irgarol 1051 and its related s-triazine compounds in tropical marine ecosystems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B41757956.
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The Best PhD Thesis in the Faculties of Dentistry, Engineering, Medicine and Science (University of Hong Kong), Li Ka Shing Prize,2007-2008published_or_final_version
Biological Sciences
Master
Master of Philosophy
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Lidija, Jevrić. "Ispitivanje korelacije između hemijske strukture, fizičko-hemijskih i retencionih parametara u hromatografiji na obrnutim fazama novosintetisanih derivata s-triazina." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2009. https://www.cris.uns.ac.rs/record.jsf?recordId=73285&source=NDLTD&language=en.
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Primenom tečne hromatografije na obrnutim fazamaispitano je retenciono ponašanje 14 novosintetisanihderivata s-triazina na tankom sloju RP C-18 i silika geluimpregniranim parafinskim uljem. Kao pokretne fazekorišćene su dvokomponentne smeše vode i organskihrastvarača. Izračunate su RM0 vrednosti i ispitana jekorelacija sa različitim deskriptorima i prediktorimabiološke aktivnosti.Retentional behaviour of 14newly syntetised derivates of s-triazine on RP C-18 and paraffin oil-impregnated silica gel suport had been investigated using thin-layer chromatography. As a mobilephases were used two-component water based mobile phases. Calculated RM0 values were corelated to various molecular descriptors as well as biological activity indicators.
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CHRAMOSTA, NATHALIE. "Etude de l'oxydation de s-triazines en milieu aqueux par ozonation en absence et en présence de peroxyde d'hydrogène : sous-produits de dégradation de l'atrazine et réactivité de quelques s-triazines vis-à-vis des radicaux hydroxyles." Poitiers, 1993. http://www.theses.fr/1993POIT2408.
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Cette etude a eu pour but de montrer l'influence de certains parametres sur l'oxydation de s-triazines en milieu aqueux dilue par l'ozone en absence et en presence de peroxyde d'hydrogene, d'identifier les sous-produits d'oxydation de l'atrazine par o#3 et par o#3-h#2o#2, et de comparer la reactivite de plusieurs s-triazines (sous-produits d'oxydation de l'atrazine, chloro-, methylthio-, methoxy-s-triazines) vis-a-vis des radicaux hydroxyles. L'efficacite de l'oxydation par l'ozone et par le systeme ozone-peroxyde d'hydrogene vis-a-vis de la degradation de l'atrazine depend du ph, du rapport h#2o#2/o#3 (optimum vers 0,5 mole/mole), et diminue en presence de pieges a radicaux hydroxyles comme les ions bicarbonate et la matiere organique. L'oxydation de l'atrazine a ph=7,5 par o#3 et par o#3-h#2o#2 conduit a une oxydation limitee du carbone organique, a une deshalogenation partielle et aux memes sous-produits de reaction. Les produits identifies indiquent que les reactions portent essentiellement sur les substituants du noyau s-triazine avec formation de composes dealkyles, hydroxyles et une amide. La desethylatrazine est le principal produit primaire de degradation de l'atrazine (0,5 mole/mole d'atrazine eliminee). Les experiences de cinetique competitive ont permis d'etablir une echelle de reactivite des differentes s-triazines vis-a-vis des radicaux hydroxyles (simetryne > ametryne >> simeton > atraton simazine > atrazine > desisopropylatrazine > desethylatrazine >> desethyldesisopropylatrazine), de montrer l'influence des substituants du cycle sur la reactivite des composes et de mettre en evidence que la desethyldesisopropylatrazine et l'acide cyanurique sont tres refractaires a une oxydation par o#3 et par o#3-h#2o#2. Les constantes cinetiques absolues de reaction des radicaux oh sur les s-triazines ont ete determinees en prenant l'ion paranitrobenzoate, comme compose de reference. Les valeurs obtenues pour l'atrazine et la simazine (respectivement 2,410#9 et 3,110#9 l mol##1 s##1) sont du meme ordre de grandeur que celles publiees recemment avec d'autres systemes de generation in situ des radicaux hydroxyles
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Lerivrey, Jacques. "Étude de la complexation des systèmes métal - S-triazines - D-glucosamine : mise en évidence de complexes ternaires." Lille 1, 1985. http://www.theses.fr/1985LIL10123.
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L'objectif principal de ce travail est l'étude de la complexation du système ternaire cuivre (II) - prométone - D-glucosamine en solution aqueuse dans le but de comprendre le mécanisme d'assimilation des herbicides par les plantes. L'étude préliminaire des systèmes binaires Cu(II) - prométone et Cu (II) - D-glucosamine s'est avérée nécessaire. Nous avons mis en oeuvre une technique potentiométrique et développé des programmes de traitement de données expérimentales. Les résultats potentiométriques sont corroborés par différentes techniques spectroscopiques qui précisent la nature des liaisons impliquées dans les complexes. La prométone (PR), herbicide de la famille des s-triazines, conduit avec l'ion cuivrique à la formation d'un complexe stable de type CuL2. Avec la D-glucosamine (GA), sucre aminé simple, nous avons mis en évidence des complexes du type CuL2 et CuL2H-2. L'étude du système ternaire Cu(II) - PR - GA montre la formation du complexe mixte Cu(PR)(GA), très stable dans la zone des pH neutres. L'herbicide préalablement complexé avec le cuivre (II) peut réagir avec les sucres aminés présents dans les parois cellulaires des plantes et faciliter son assimilation. D'autre part, nous avons étudié l'influence des substituants de la molécule de 1, 3, 5 s-triazines dans sa complexation avec Cu(II) et l'influence de la nature du métal sur les phénomènes de coordination avec la D-glucosamine.
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Demons, Samandra. "The Effect of S-triazines and Nitrobenzene on the Degradation of Toluene and Napthalene in Solid Phase Systems." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/biology_diss/50.
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Nitrogen is known to be a limiting factor in polluted environments, however many studies overlook the potential role for nitrogen to significantly influence the removal rate and efficiency with which microorganisms can degrade aromatic hydrocarbons. In this study, inoculated and uninoculated aerated soil microcosms containing different s-triazines were examined for their ability to efficiently and rapidly treat contaminated soils containing naphthalene, nitrobenzene, and toluene (NNT), via a microbial consortium consisting of Pseudomonas, Rhodococcus, and Aeromonas. After an experimental period of 14 days, greater than 90% degradation of NNT supplemented with different s-triazines, at concentrations of 1000-3000 ppm was observed. A difference in the degradation of NNT was seen in inoculated box reactors supplemented with cyanuric acid, melamine, and atrazine in comparison to uninoculated box reactors. Combined usage of 16s rDNA and 16s rRNA analysis was then applied to study the bacterial communities, and determine the abundance and survival of inoculated strains within box reactors contaminated with NNT. The bacterial diversity within clone libraries obtained illustrated a dominance of proteobacteria and gram positive bacteria. Analysis from clone libraries also showed that inoculated strains did survive within each condition, but were not the most predominant members present in the communities. This research shows that significant removal of NNT can be achieved in two weeks with the supplementation of one of the s-triazines. However, differences in degradation and the microbial populations present within contaminated communities will be seen depending on which nitrogen sources are used and whether or not environments are bioaugmented or not.
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Dotson, Darin Lee. "Part 1, the mesomorphic properties of arloxy-s-triazines and their analogs, Part 2, the synthesis and polymerization behavior of [alpha]-aminonitriles and related compounds /." This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10032007-171943/.
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Dotson, Darin Lee. "Part 1. the mesomorphic properties of arloxy-s-triazines and their analogs, Part 2. the synthesis and polymerization behavior of α-aminonitriles and related compounds." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/39575.
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TACE, EL MOSTAFA. "Etude cinétique de la dégradation de chloroéthanes et de s-triazines en milieu aqueux par irradiation UV en l'absence et en présence de peroxyde d'hydrogène." Poitiers, 1993. http://www.theses.fr/1993POIT2407.
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Ce travail a pour but d'etudier la vitesse de degradation de chloroethanes (tri et tetrachloroethanes) et de s-triazines (atrazine et simazine) en solutions aqueuses diluees (10##7 a 10##6 mol l##1) par le procede d'oxydation h#2o#2/uv. Les experiences ont ete effectuees avec des reacteurs photochimiques equipes d'une lampe a vapeur de mercure basse pression (emission principale a 253,7 nm). Pour les chloroethanes qui sont des composes non degradables par photolyse directe a 253,7 nm, les resultats ont montre que l'efficacite de l'oxydation par h#2o#2/uv depend de la dose d'oxydant (existence d'une dose optimale de h#2o#2), depend du ph et diminue en presence de pieges a radicaux hydroxyles (ions bicarbonate) ou de composes absorbants a la longueur d'onde de 253,7 nm (acide fulvique). Ces resultats experimentaux ont pu etre interpretes a l'aide d'un modele cinetique. Pour les s-triazines, les experiences effectuees en reacteur statique ont montre que la vitesse de decomposition de l'atrazine et de la simazine obeit a une loi cinetique d'ordre 1 par rapport a la concentration en compose organique et que la vitesse de photodecomposition diminue fortement en presence de composes mineraux dans le cas de l'utilisation de lampes uv qui emettent egalement un rayonnement a 184,9 nm. Les resultats obtenus ont permis d'estimer les valeurs des rendements quantiques de photodecomposition de l'atrazine (5,110##2 mole einstein##1) et de la simazine (610##2 mole einstein##1) a 253,7 nm et a 20c. L'addition de peroxyde d'hydrogene conduit a une legere augmentation de la vitesse de degradation des deux s-triazines. Enfin, les valeurs des constantes de reaction des radicaux hydroxyles sur les trichloro et tetrachloroethanes (k1,5 a 710#7 l mol##1 s##1) et sur l'atrazine et la simazine (k2 a 310#9 l mol##1 s##1) ont pu etre estimees a partir d'experiences d'oxydation par h#2o#2/uv
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Godoi, Isamara. "Impacto da presença de atrazina na comunidade bacteriana do solo." Universidade Estadual do Oeste do Parana, 2012. http://tede.unioeste.br:8080/tede/handle/tede/410.
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Previous issue date: 2012-02-13Chemical contamination removal in soil and water depends on microbiological community that is able to degrade these compounds. There is a great evolutionary interest on studying microorganisms that metabolize the xenobiotic ones, since they have relatively been seen as new in the last five decades. Little is known about structure variation of microbiological community of soil due do the absence and presence of s-triazine herbicides.Unlike crop dependent methods that require time to detect bacteria, molecular techniques have been developed to identify individual species in mixed populations under natural enviromments. Fluorescence in situ Hibiridization (FISH) technique overcomes some difficulties that are found out in other molecular techniques, as it does not need DNA isolation and amplification steps and allows the identification of specific genes in intact cells. Thus, this study aimed at comparing the absence/presence of atrazine effect on bacteriological community structure in soil according to the phylogenetic aspect. Target probes were used on subdivisions of alpha, beta and gamma Proteobacteria, gram-positive bacteria with high G+C content, ammonia oxidizing bacteria, nitrite oxidizing bacteria and Planctomycetes. It was also used an AtzB1 specific probe to check the atzB gene presence, which makes part of s-triazine degradation. Bacteriological amount was determined by direct counting on epifluorescence microscopy, while the corresponding values to each probe were expressed in percentages of the total count with DAPI for each sample. According to this study, positive cells were found out for all probes used in both soils, but the abundance of all groups was lower in soil contaminated with atrazine herbicide, thereby demonstrating its negative influence. Planctomycetes was the most affected group with 57% lower abundance in contaminated soil. The nitrite oxidizing bacteria was the second most affected group followed by β-Proteobacteria. It was also detected the gene atzB presence, so, it can be inferred that there are potentially degrading s-triazine bacteria in both soils.
A remoção da contaminação química no solo e água é dependente principalmente da presença de uma comunidade microbiana capaz de degradar tais compostos. A existência de microorganismos capazes de metabolizar xenobióticos é de um considerável interesse evolucionário, uma vez que estes compostos são relativamente novos no planeta nas últimas cinco décadas. Pouco se sabe sobre a variação da estrutura da comunidade microbiana do solo em função da ausência e presença dos herbicidas s-triazínicos. Diferentemente dos métodos dependentes de cultivo, que requerem tempo para a detecção de bactérias, técnicas moleculares vem sendo desenvolvidas para o reconhecimento de espécies individuais em populações mistas em ambientes naturais. A técnica de Hibridização Fluorescente in situ (FISH) supera algumas dificuldades encontradas com outras técnicas moleculares, pois dispensa as etapas de isolamento e amplificação de DNA e permite a identificação de genes específicos em células intactas. Em virtude disso, o presente trabalho teve como objetivo comparar o efeito da ausência/presença de atrazina na estrutura da comunidade bacteriana do solo no aspecto filogenético. Foram utilizadas sondas alvo para as subdivisões de Proteobactéria alfa, beta e gama, bactérias Gram-positivas com alto teor de G + C e Betaproteobactérias oxidantes de amônia, Bactérias oxidantes de Nitrito e Planctomicetos. Também foi utilizada uma sonda específica AtzB1 para verificar a presença do gene atzB que está envolvido na degradação das s-triazínas. A abundância bacteriana foi determinada através de contagem direta em microscopia de epifluorescência, e os valores correspondentes a cada sonda foram expressos em porcentagem da contagem total com DAPI para cada amostra. No presente estudo células positivas para todas as sondas utilizadas foram encontradas em ambos os solos, porém a abundância de todos os grupos foi menor no solo contaminado com o herbicida atrazina, demonstrando dessa forma a influência negativa do mesmo, sendo o grupo mais afetado o dos Planctomicetos com uma abundância 57% menor em solo contaminado. O segundo grupo mais afetado foi o das bactérias oxidantes de nitrito seguido pelo grupo das β-Proteobactérias. Foi também detectado no presente estudo a presença do gene atzB demonstrando que em ambos os solos existem bactérias potencialmente degradadoras de s-triazinas.
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Olson, B. M. "Spectroscopic study of interactions between s-triazine herbicides and humic substances." Thesis, University of Aberdeen, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374630.
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Macdonald, Philip Alan Carleton University Dissertation Biology. "Studies on the photosynthetic properties of s-triazine sensitive and resistant weeds." Ottawa, 1985.
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Makowski, Sophia Janina. "Molecular s-triazine and s-heptazine derivatives as building blocks in coordination networks, molecular salts and supramolecular materials." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-149763.
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Makowski, Sophia Janina [Verfasser], and Wolfgang [Akademischer Betreuer] Schnick. "Molecular s-triazine and s-heptazine derivatives as building blocks in coordination networks, molecular salts and supramolecular materials / Sophia Janina Makowski. Betreuer: Wolfgang Schnick." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1028325398/34.
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Keßler, Fabian Karl [Verfasser], and Wolfgang [Akademischer Betreuer] Schnick. "Structure and reactivity of s-triazine-based compounds in C/N/H chemistry / Fabian Karl Keßler ; Betreuer: Wolfgang Schnick." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1199816728/34.
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Manallah, Bouzid. "Observation de raies nouvelles dans le spectre de RQN de l'azote-14 dans quelques dérivés de la S-triazine et double résonance différée de l'azote dans la S-triazine à 4,2 k. : observation de la phase incommensurable de ThBr₄ à 4,2 K par RQN du brome." Paris 11, 1986. http://www.theses.fr/1986PA112021.
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Après avoir rappelé la théorie de la RQN et les facteurs qui l'influencent, on présente les spectromètres utilisés pour l'étude des résonances de l'azote-14 et du brome à 4,2 K. Une expérience de double résonance différée dans la s-triazine où les temps de relaxation sont longs, a permis d'apparier les raies ѵ+ et ѵ- ; elle a aussi permis de mettre en évidence des signaux d'émission avec les raies ѵ-. Dans le chlorure de cyanuryle, le spectre de RQN à 4,2 K a été complété par l'observation de deux raies nouvelles et dans la mélamine, neuf raies nouvelles ont été observées à cette température. Dans ThBr₄ , l'étude de la RQN du brome a pu être faite à 4,2 Ken utilisant une ligne demi-onde reliant la bobine r. F. Située dans le cryostat au spectromètre de superréaction ; nous avons ainsi pu observer, à cette température, la phase incommensurable déjà connue à température plus élevéeAfter a review of the theory of NQR and of factors that relate to it, the various kinds of spectrometers used to study Nitrogen-14 and Bromine NQR at 4. 2 K are described. A delayed double resonance experiment in s-triazine, where the relaxation times are long, allowed the ѵ+ and ѵ- in this substance lines to be paired. It was also possible to observe emission signals at the ѵ- lines. Complete NQR spectra of Cyanuric chloride and melamine were obtained by the observation of two new lines and nine new lines, respectively, at 4. 2 K. A Bromine NQR study of ThBr₄ was carried out at 4. 2 K by the use of a half-wavelength transmission line connecting the r. F. Coil in the cryostat to the superregenerative spectrometer. Thus, we were able to observe at this temperature the incommensurate phase which was already known to exist at higher temperature
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Le, Tuong Thuy. "One-bath dyeing of polyester/cotton blends with disperse and bis-3carboxypyridinium-s-triazine reactive dyes at 130°C and neutral pH." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490123.
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Over the last 20 years, selected disperse dyes and bis-3-carboxypyridinium-striazine reactive dyes have been widely promoted for the exhaust dyeing of polyester/cotton blends in a one-bath-one-stage ('All-in') process under neutral conditions. However, despite the time and energy savings afforded by this elegant dyeing process, there is a belief in the dyeing industry that economical production is limited to pale and medium depths of shade. The two dye classes (disperse dyes on polyester and bis-3-carboxypyridinium-striazine reactive dyes on cotton) were investigated to understand why heavy depths of shade could not readily be obtained, economically, using this process. The bis-3carboxypyridinium- s-triazine reactive dyes were responsible for the inability to achieve heavy depths of shade, economically, when dyeing at 130°C and neutral pH. The poor colour yield of the dyes was due to their low exhaustion level and low fixation efficiency at 130°C and pH 7.0-7.5, particularly when compared with the parent bis-monochlorotriazine dyes, fixed under alkaline conditions at 80°C. The synthesis and evaluation of some bis-3-carboxypyridinium-s-triazine reactive dye structures, possessing highly substantive chromophores, were investigated as a mecm of obtaining high colour yield, on 100% unmercersised cotton, at 130°C and pH 7.0-7.5. When a highly substantive bis-3-carboxypyridinium-s-triazine dye chromophore was incorporated into the reactive dye structures, heavy depths of shade could be readiiy obtained when dyeing at 130°C and neutral pH, using conventional salt concentrations. However, the wet fastness properties of the dye were poor, due to the slow removal of the hydrolysed dye and its propensity for back-staining adjacent white areas. If the high substantivity of a dye could be assigned to the reactive group, which is removed during the fixation of the dye, it may be possible to offer both acceptably high levels of build-up (and costeffectiveness) and wet fastness. The synthesis and evaluation of novel reactive dye structures, possessing substantivity-conveying reactive groups, when applied to cotton at 130°C and pH 7.0 - 7.5, were investigated. When a substantivity-conveying reactive group was incorporated into a reactive dye structure, as a replacement for a chlorine atom, the dye exhibited a higher substantivity than the parent monochlorotriazine dye. The use of amide derivatives of nicotinic acid as the reactive group in a s-triazinyl reactive dye resulted in an increase in the substantivity, compared with the parent 3carboxypyridinium- s-triazinyl dye. When two substantivity-conveying reactive groups were incorporated into a dye molecule, without changing the reactivity of the dye, the above effect is enhanced, resulting in higher colour yield than from the corresponding Kayacelon React dye. Since the substantivity-conveying reactive group is removed during the fixation of the dye, the high substantivity of the parent dye should not be an impediment to achieving good wet-fastness properties, without the need to use excessively long wash-off sequences.
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Tasso, Carlos Roberto Batista. "A busca de um método espectrofotométrico com complexos de rutênio para estimação quantitativa da 1,3,5-triazina-1,3,5-(2H,4H,6H)-trietanol residual usada para eliminação do H2S presente no refino do petróleo." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-09082016-141934/.
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Nesse trabalho foi estudada uma técnica para a detecção de OHTC na água salina. Descobriu-se que certos complexos de rutênio em determinados valores de pH reagem com a molécula de OHTC e isto é detectável por espectrofotometria UV-Vis. Foram estudados os complexos fac-[RuCl2(S-DMSO)3(O-DMSO)] (complexo 1), {[(DMSO)2H][trans-RuCl4(DMSO)2]} (complexo 2) e cis-[RuCl2(bpy)2].2H2O (complexo 3). O complexo 1 possui um dos ligante (O-DMSO) que pode ser substituído pelo OHTC. Já o complexo 2 possui um dos ligantes (S-DMSO) na posição trans um ao outro, e o complexo 3 possui os 2 íons Cl- para tal finalidade. Determinou-se que o complexo 1 é viável, mesmo em presença de sais presentes na água do mar. Assim a reação foi realizada em função do tempo, variação do pH, temperatura e concentração de OHTC. Nos outros dois complexos os estudos foram realizados sem a variação da temperatura e concentração de OHTC.p>In this work we studied a technique for detection of OHTC in water. It was discovered that complexes involving ruthenium, on determined pH values, react with the OHTC molecule and this is detectable by UV-VIS spectroscopy. The complexes fac-[RuCl2(S-dmso)3(O-dmso)] (complex 1), {[(DMSO)2H][trans-Ru(DMSO)2Cl4]} (complex 2), and cis-[RuCl2(bpy)2].2H2O (complex 3) were studied. The complex 1 present one position ( O - DMSO) which can be substituted by the OHTC. Additionally, the complex 2 present two ligands ( S- DMSO) trans between each other, and the complex 3 present two chloride ions for the same porpose of complex 1 respectively. It was determined that the complex 1 was able to react with OHTC even in presence of the salts present in sea water. Thereby, the reaction involving complex 1 and OHTC was monitored in function of the time, pH, temperature, and finally concentration of OHTC. On the other two complexes, the reaction was studied without variation of temperature and concentration of OHTC.
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Biagianti, Sylvie. "Contribution à l'étude du foie de juvéniles de muges (Téléostéens, Mugilides), contaminés expérimentalement par l'atrazine (s-triazine herbicide) : approche ultrastructurale et métabolique : intérêt en écotoxicologie." Perpignan, 1990. http://www.theses.fr/1990PERP0084.
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Pudge, Ian Brent. "The use of two Enterobacter sp. and the development of a Two-Phase Partitioning Bioreactor for the destruction of hexahydro-1,3,5-trinitro-1,3,5-s-triazine, RDX." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ63356.pdf.
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Douglass, James F. "Biomineralization of atrazine and analysis of 16S rRNA and catabolic genes of atrazine-degraders in a former pesticide mixing and machinery washing area at a farm site and in a constructed wetland." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440373757.
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Müller, André John Albert. "Column parameters for gas chromatography of s-triazines." Thesis, 1985. http://spectrum.library.concordia.ca/2731/1/ML30607.pdf.
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Kong, Mei-Feng, and 龔美鳳. "Synthesis of Containing Fluoro 2,4,6-Trialkoxy-s-triazines by the Phase Transfer Catalytic Reaction." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/23001742693203577675.
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Hsueh, Chung-Chuan, and 薛仲娟. "Studies of Migration Behavior and Separation of Chlorophenolsand and s-Triazines Herbicides by Capillary Electrophoresis." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/55335410080587610824.
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博士國立臺灣大學
化學研究所
87
Abstract The influence of buffer pH on the migration behavior and separation of isomeric trichloro-phenols (TCPs) was systematically investigated using capillary zone electrophoresis. Complete separation of isomeric trichlorophenols was achieved with a phosphate-borate buffer in the pH range 5.8~8.0 at 10 kV. The present results confirm that the optimum pH condition is indicated by the change in the shape of curves from concave to convex in the plots of electrophoretic mobilities of trichlorophenols at some given pH (roughly in the range pKa±2)versus the pKa value of each corresponding isomer. At this optimum pH, electrophoretic mobility of isomeric trichlorophenols correlates linearly with their pKa values. The similarity of such correlations in different pH ranges for trichlorophenols and dichlorophenols illustrates the dependence of the electrophoretic mobility of a chlorophenol isomer on both pKa and the molecular size. The pKa values of five isomeric trichlorophenols are reported. The migration behavior and separation of various s-triazines, including five chloro-, three methoxy- and five alkylthio-s-triazines, were investigated in micellar electrokinetic chromatography (MEKC) using a cationic surfactant. In this study, tetradecyltrimethyl ammonium bromide (TTAB) was selected as a cationic surfactant. The results indicate that the selectivity of neutral species of s-triazines in each class is not significantly influenced by buffer pH and micelle concentration, but the overall selectivity is considerably affected by these two separation parameters when charged solutes are present, particularly, at buffer pH below 5.0. Complete separation of thirteen s-triazines was optimally achieved within six minutes on addition of TTAB (15 mM) to a phosphate buffer (70 mM) at pH 4.75 or 3.8. Based on a model that describes the relationship of the effective electrophoretic mobility of a neutral solute and micelle concentration in MEKC, the migration behavior of chloro-s-triazines at pH 6.0 is predicted and the binding constants of s-triazines to TTAB micelles are evaluated. The correlation between the binding constants and Pow (the partition coefficient of a solute between 1-octanol and water) reveals that the migration order of s-triazines in each class is primarily determined by the hydrophobicity of the solutes.
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Yang, Tzung-Ying, and 楊宗穎. "Separation and On-line Concentration of Neutral Species of Chloro-s-Triazines by Micellar Electrokinetic Chromatography." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/23946893570136704298.
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Chang, Ming-Kun, and 張銘坤. "Formation of Chloro-Anilino-s-Triazine." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/46142955386340906227.
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碩士元智大學
化學工程學系
90
Many people have studied the reaction of cyanuric chloride and aniline, and previous research has shown that produce the derivatives of 2-anilino-4,6- dichloride-s-triazine and 2,4-dianilino-6- chloride-s-triazine were easy, but the formation rate of trianilino-s-triazine was very slow in the past time, and the conditions of trianilino-s-triazine at those literatures were with high temperature and needed long time. In this study investigated to found the method of synthesis on homogenous reac- tion. And the reaction temperature was under 50℃, and reactions operated in bath reactor. The rea- ction system classification based upon the made of the type of solvent, including of single solvent and mixed solvent. The mixed solvent was chloroform with other organic solvent. According to the experimental result, the yield and the reaction rate in the mixed solvent were better than single solvent in most condition. If those solvents mixed with chloroform were classify- cation to aprotic solvents and protic solvents, the reaction rate of protic solvents were better than aprotic solvents. Both of protic solvents and aprotic solvents, the reaction rates were increasingly with increasingly solubility parameter. And the optimum reaction condition was 4 cm3 methanol with 96 cm3 chloroform, reaction time was four hours have maximum yield of trianilino-s-triazine could reach to 93.5%.
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HUANG, RONG-NAN, and 黃榮南. "Immunoassay of 2-chloro--4,6-diamino-s-triazine(CAAT),the the didealkylated metabolite of chloro-s-triazine herbicides." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/48702125666331142063.
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Lo, Wen Chun, and 羅文俊. "Syntheses and Characterization of Liquid Crystalline Compounds Containing s-Triazine Ring." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/93981331660711672595.
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Hu, Deng-Siang, and 胡登翔. "Synthesis, Crystal Structures and Properties of Metal-Organic Frameworks with 4,4’,4”-s-triazine-2,4,6-triyltribenzoate, and 2,2’,2”-s-triazine-1,3,5-triyl-tri-o-aminobenzoate as Linkers." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/hezncq.
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碩士國立中正大學
化學暨生物化學研究所
103
Here we report the synthesis and characterization of a series of metal-organic frameworks (MOFs), resulted from the self-assembly of metal ions and entitled ligands, 4,4’,4”-s-triazine-2,4,6-triyltribenzoate (pTATB) and 2,2’,2”-s-triazine-1,3,5-triyl-tri-o-aminobenzoate (oTATAB) : [(CH3)2NH2]3[Ga3(pTATB)4]•22DMF•7H2O (1), [Cu3(oTATAB)2(H2O)3]•10DMA•3H2O (2) and [Ln4Na2(oTATAB)4(DMA)12](NO3)X (Ln= La(3a), Ce(3b), Nd(3c); X=Cl、Ln=La(3d); X=I). Single-crystal X-ray diffraction studies indicate 1 has two identical interwoven 3D networks with solvent-accessible volume of 70.3% calculated using PLATON. Compound 2 crystallizes in cubic space group Pa-3. In its structure, two copper atoms are bridged by four carboxylates to form the well-known paddlewheel secondary building unit with axial aqua ligands. The framework of 2 remains intact after solvent-exchange by THF and ACN. Reversible crystal to amorphous transformation has also been observed in 2. In addition, we also synthesized four 3D isostructures, [Ln4Na2(oTATAB)4(DMA)12](NO3)X (Ln= La(3a), Ce(3b), Nd(3c); X=Cl、Ln=La(3d); X=I). The solvent accessible free volumes of (3a) to (3d), calculated by PLATON, are approximately 51% of the crystal volume. The structure of (3a) to (3d), appear to collapse into amorphous phases upon the removal of solvent molecules were studied by thermal analyses and powder X-ray diffraction. This structure is similar to {[Ln2(pTATAB)2(H2O)(DMA)3]•xH2O}n and {[Ln2(mTATAB)(DMA)3]}n, but its structure has to add the sodium ions . And the sodium atom and six carboxylates of the framework have interaction to stabilize two identical interwoven 3D networks.
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Lee, Jenq Chyang, and 李正強. "Syntheses and Characterizations of Polymer Liquid Crystalline Compounds Containing s-Triazine Ring." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/58010559543637970296.
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Her, Jyh-Jian, and 何志堅. "The chromatographic approach of s-triazine-.beta.-cyclodextrin stationary phase separate dichlorophenol." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/29096722692248258914.
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Chen, Guan-Yu, and 陳冠宇. "Synthesis, Crystal Structures and Properties of Metal-Organic Frameworks with 4, 4’, 4’’-s-triazine-2, 4, 6-triyltribenzoate, 3, 3’, 3’’-s-triazine-2, 4, 6-triyltribenzoate, and 4-sulfobenzoate as linkers." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/3cud95.
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碩士國立中正大學
化學暨生物化學研究所
102
Here we report that the self-assembly of serveral metal ions and ligands leads to the formation of a series of metal-organic frameworks (MOFs). Different MOFs were obtained with the choice of the entitled ligands. 4, 4’, 4’’-s-triazine-2, 4, 6-triyltribenzoic acid (p-TATB) results in {[In(p-TATB)(H2O)(DMSO)]•2DMSO}n (1); 3, 3’, 3’’-s-triazine-2, 4, 6-triyltribenzoic acid (m-TATB) results in {[Zn2(m-TATB) (H2O)2]•0.5(C2O4)•DMA}n (2) and {(H2NEt2)[In(m-TATB)Cl]•1.5DEF•H2O}n (3); 4-sulfobenzoic acid (4-SBA) results in {K2[Ln2(4-SBA)4(H2O)4]}n (Ln = Eu(4a), Gd(4b), Tb(4c), Dy(4d), Ho(4e), Y(4f), Eu+Tb(4g)). Single-crystal X-ray diffraction studies indicate 1 has four identical interwoven 3D nets with solvent-accessible volume of 46.9% calculated using PLATON, but when its solvent molecules are removed, 1 transforms to amorphous phase. 2 has two-fold interwoven 3D nets with solvent-accessible volume of 34.4%. After solvent exchange, 2 transforms to amorphous phase. Nevertheless, when 2 soaks in origin solvent, 2 transforms to another new phase. 3 also has two-fold interwoven 3D nets with solvent-accessible volume of 51.4%. Removing guest solvent molecules, the framework of 3 remains intact. 4a-4g are isostructures adopting 2D frameworks. Complexes 4a(Eu), 4c(Tb), 4d(Dy), 4e(Ho) and 4g(Eu+Tb) exhibit photoluminescent properties, giving characteristic Ln3+ emissions.
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Liu, Yu-Chih, and 劉宇智. "Studies of Separation and On-line Concentration of s-Triazine Herbicides and Phenothiazines in Capillary Electrophoresis." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/53769179684066439201.
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博士國立臺灣大學
化學研究所
94
Environmental pollutants and pharmaceutical compounds were selected for studying the enhancement of detection sensitivity. In this dissertation, on-line concentration of small molecules on capillary electrophoresis studied is consisting of three parts: In the first part, we focus on the stacking of environmental pollutants, such as methylthio-s-triazines herbicides, in normal stacking mode using sodium dodecyl sulfate (SDS) as an anionic surfactant and borate electrolyte at pH 9.0. The sample matrix used for concentration of neutral analytes is 30 mM borate electrolyte, and the optimal electrophoretic system for separation consists of 20 mM SDS and 20 mM borate buffer at pH 9.0. Interestingly, two maxima were observed in the plot of absorbance versus SDS concentration in the range 10-150 mM. Stacking efficiency of each individual analyte depends on its binding constant to SDS micelles, terbutryn can afford about 1000-fold enhancement under an optimal electrophoretic system. With this stacking mode, the sample solution can be injected up to 180 s, and the limits of detection (S/N=3) of terbutryn, prometryn, ametryn and simetryn determined to be 61, 25, 11 and 2 ng / mL, respectively. In the second part, we focus on the stacking of s-triazines herbicides using sweeping technique. The separation buffer consisting of anionic surfactant and phosphate electrolyte at pH 5.6 was used. The injection time of 480 sec can be achieved for baseline separation of four s-triazines. The concentrations of phosphate buffer at 50 mM was used as the sample matrix, while separation buffer consists of 50 mM phosphate electrolyte and 50 mM SDS containing 20 % methanol at pH 5.6, sample matrix and separation buffer were optimized. With this sweeping mode, the sample solution can be injected up to 480 s, and the limits of detection (S/N=3) of terbutryn, prometryn, ametryn and simetryn determined to be 3.0, 2.0, 1.5 and 1.2 ng / mL, respectively, with UV detection. In the third part, the enantioseparation and stacking of phenothiazine enantiomers based on the pH junction-sweeping mechanism were investigated. Phenothiazine samples were dissolved in water at neutral pH, whereas phosphate buffer at pH 3.0 containing different type of cyclodextrins (CDs), such as randomly sulfated β-CD (S-β-CD), β-CD HP-β-CD, DM-β-CD and γ-CD, was used as separation buffer. γ-CD shows the best enantioresolution for four phenothiazines, including promethazine, ethopropazine, trimeprazine and thioridazine. Effective enantioseparation and stacking of phenothiazine enantiomers could be achieved with the injection time of 1800 sec, when multi-cyclodextrins, such as S-β-CD / β-CD / γ-CD was employed. Due to extremely large injection volume (a filling of 98.9 % effective length), the signal of thioridazine (5a) could be greatly enhanced.
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Liu, Yu-Chih, and 劉宇智. "Separation and On-line Concentration of s-Triazine Herbicides in Micellar Electrokinetic Chromatography Using Cationic Surfactants." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/75673098205627252260.
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Lin, Yang-Chu, and 林洋鉅. "Studies on liquid crystals : Syntheses of Schiff''s base complexes with fluorinated side-chain , pyrimidine and triazine derivatives." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/79173137596257102221.
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碩士國立臺灣大學
化學研究所
88
We have introduced the perfluorinated aliphatic side chains into several Schiff''s base-typed liquid crystalline complexes and investigated the effects of fluorination on the mesophases. In general, the melting points of the perfluorinated complexes are higher than the corresponding hydrocarbon analogues, and the difference increases as increasing the number of the difluorine methylene units. Moreover, it was found that the introduction of the perfluorinated side chains stabilizes the Smetic phase in the SBL-3A-R series, but it inhibits the formation of the Sc phase for the SBL-3B-R series, resulting in a direct transition from the SA to the I phase. In addition, several disc-shaped molecules derived from 2,4,6-triphenylpyrimidine have been synthesized. However, no liquid crystalline properties could be observed for those with three or six alkoxy side chains. Under the same reaction condition for the synthesis of the nine-side-chain analogue, we obtained a different product having the 2,4,6-tris(3'',4'',5''-trimethoxyphenyl)triazine core, which starts to display liquid crystalline properties when the carbon number of the side chains is as low as four. For longer side chains such as six, eight, and ten carbons, the mesomorphic phase exists even at the room temperature. The instrumentation of this work includes DSC, optical microscopy with polarized light, and X-ray diffraction.
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LIN, ZHEN-XING, and 林振興. "The preparations of chiral stationary phases and ▫-cyclodextrin bonded phases containing s-triazine ring and applications in HPLC." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/90832977062331309883.
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Shih, Pei-Shan, and 史佩珊. "Syntheses, Structures and Properties of Metal-organic Materials with 2,3-Pyrazinylditetrazolate or 4,4′,4′′-s-Triazine-1,3,5-triyltri-p-aminobenzoate." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/77581173419471729572.
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碩士國立中正大學
化學暨生物化學研究所
100
Here we report that the self-assembly of serveral metal ions and ligands leads to the formation of a series of metal-organic materials (MOMs). The choice of tetrazolate-based ligand, 2,3-di-1H-tetrazol-5-ylpyrazine (H2dtp) results in (NH2Me2)[CuIdtp] (1) and (NH2Me2)4[Mdtp2Cl2] ( M = Cu2+ (2), Mn2+ (3) ), while 4′,4′′-s-triazine-1,3,5-triyltri-p-aminobenzoic acid (H3TATAB) affords (Me2NH2)3[In(TATAB)2]．2DMF (4), (NH2Me2)3[In3(TATAB)4]．3DMF．20H2O (5) and [Cu3(TATAB)2(H2O)3] (6). Single-crystal X-ray diffraction studies indicate 1 has a 2D structure, 2 and 3 are discrete molecules, 4 is one-dimensional, 5 and 6 are 3D networks, of which two-fold interpenetration is observed in 6. Porosity calculations for 5 and 6 based on PLATON, suggest 61.4% and 66.2% void space for 5 and 6, respectively. Thermal stability of compounds 1, 5 and 6 were studied by thermal analyses and powder X-ray diffraction. As a result, 1 is thermally stable up to 340℃, whereas the structures of 5 and 6, appear to collapse into amorphous phases upon the removal of solvent molecules. The luminescent emissions for all compounds were also measured. Bands due to intra-ligand transitions were observed. In addition, compounds 1, 2, and 3 also exhibit new bands, which can be attributed to metal-to-ligand charge transfer (MLCT).
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Yang, Chih-Liang, and 楊智量. "Syntheses, Crystal Structures and Properties of Metal-organic Frameworks with2-Sulfoterephthalate, 4-Sulfobenzoic acid, and 3,3’,3’’-s-Triazine-1,3,5-triyltri-m-aminobenzoate." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/42613057295037565970.
Full textAbstract:
碩士國立中正大學
化學暨生物化學研究所
101
Here we report that the self-assembly of lanthanide ions with functional organic ligands, such as carboxylate group and sulfonate group.We have synthesized fourteen novel metal-organic materials, as following: {[Sm(2STP)(H2O)3](H2O)}n (1) {K[Ln(4SBA)2(H2O)]}n { Ln = Sm (2), Eu (3), Tb (4), Nd(5)} [Ln(mTATAB)(DMA)3]n { Ln = La (6), Ce (7), Pr (8), Nd (9), Sm (10), Eu (11), Gd (12), Tb (13), Dy (14)} ( 2STP = 2-sulfoterephthalate; 4SBA = 4-sulfobenzoic acid; mTATAB = 3,3’,3’’-s-Triazine-1,3,5-triyltri-m-aminobenzoate) In this thesis, their syntheses, structural characterization, thermal properties, and luminescence properties, are discussed. Compounds 1 is a 2-D framework: The metal-oxide 1-D chain and 2STP constructed a 2-D network, and the 2-D sheet packed to a 3-D structure by hydrogen bonding from coordinated water and sulfonate group. Compounds 2 to 5 are 3-D structures. It constructed a 2-D plane by metal-oxide, then form a 3-D framework with bridging water. Compounds 6 to 14 are 3-D isostructures with 2-fold interpenetration. The coordination number of lanthanum metal is nine, including three mTATABs and three DMAs. The inversion center of two centrosymmetric domains is located at (a/2, b/2, c/2) of unit cell. The solvent-accessible free volumes of Ln(mTATAB)(DMA)3 calculated by PLATON, are approximately 45% of the crystal volume, which are potentially porous materials. Compounds 1(Sm), 2(Sm), 3(Eu), 4(Tb), 10(Sm), 11(Eu), 13(Tb), 14(Dy) have luminescence properties in UV-vis range, which can contribute to characteristic lanthanide emissions. For compounds containing terbium or europium, which exhibit intence emissions, in other words, they have better energy transfer efficiency in antenna effect.
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Liao, Wei Hung, and 廖偉宏. "Synthesis, Crystal Structures and Properties of Metal-Organic Frameworks with 3, 3', 3''-s-Triazine-1, 3, 5-triyl-tri-m-aminobenzoate as Linkers." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/9af47y.
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碩士國立中正大學
化學暨生物化學研究所
102
Here we report a series of metal-organic frameworks (MOFs) which use 3, 3‘, 3‘‘-s-Triazine-1, 3, 5-triyl-tri-m-aminobenzoate (mTATAB) as linkers. By using CoCl2, CdCl2 and InCl3 under solvothermal condition, {[(CH3)2NH2][Co(mTATAB)]•6DMA•5H2O}n (1) , {[(CH3)2NH2][Cd(mTATAB)]•9DMA•4H2O}n (2) and {[(CH3)2NH2]3[In3(mTATAB)4]•7DMA}n (3) have been synthesized. 1 and 2 adopt 3D network, with about 70% porosity, by PLATON analysis. The framework of 2 remains intact after solvent-exchange by CCl2H2. So-called reversible crystal to amorphous transformation has been observed in 2, whereas a guest-induced crystal to crystal transformation has been observed in 3. In addition, we also synthesized four 3D isostructures, H6M3(mTATAB)4DMA12 (4a, 4b, 4c, 4d), where M = Cu2+, Zn2+, Co2+ and Cd2+. Furthermore, {[(CH3)2NH2][Zn(mTATAB)]•2DMF•11H2O}n (5) is a 2D structure and change phase when solvent was removed.
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Lai, Chien-Yuan, and 賴建元. "Syntheses, Crystal Structures and Properties of Metal-organic Frameworks of Lanthanide Metals with 4,4‘,4‘‘-s-Triazine-1,3,5-triyltri-p-aminobenzoate as Triangular Organic Linkers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/22969979645977794777.
Full textAbstract:
碩士國立中正大學
化學暨生物化學研究所
101
Here we report that the self-assembly of lanthanide ions with carboxylate-based organic ligands, such as 4,4',4''-s-Triazine-1,3,5-triyltri-p-aminobenzoate (H3TATAB) afforded thirteen novel metal-organic frameworks (MOFs) under solvothermal conditions : [Y(TATAB)(DMA)3]•H2O (1), [La(TATAB)(DMSO)2]•2DMSO (2), [Ln2(TATAB)2(H2O)(DMA)6] {Ln = La (3), Pr (4), Nd (5)}, [Ln2(TATAB)2(H2O)(DMA)6]•5H2O {Ln = Sm (6), Eu (7), Gd (8), Tb (9), Dy (10), Er (11), Tm (12), Yb (13)}. Single-crystal X-ray diffraction studies indicate (3), (4), (5) are isostructures, and (6) to (13) are also isostructures, all of them are 3-dimensional frameworks. Among these compounds, pore volume ratio of compound (2) is 39.8%. The solvent accessible free volumes of (6) to (13), calculated by PLATON, are approximately 51% of the crystal volume. The structure of (1) to (13), appear to collapse into amorphous phases upon the removal of solvent molecules were studied by thermal analyses and powder X-ray diffraction. [Ln2(TATAB)2(H2O)(DMA)6]•5H2O {Ln = Sm(6), Eu(7), Tb(9), Dy(10)} have photoluminescent properties, which show Ln3+ characteristic emission, and their luminescent properties are also investigated. Compounds (7), (9) exhibit intense characteristic lanthanide emissions, as a result of antenna effect.
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蔡世宏. "Synthesis, Crystal Structure and Properties of Lanthanide Metal-Organic Frameworks with 2, 5-dihydroxyterephthalate and 3, 3’, 3’’-s-triazine-1, 3, 5-triyltri-m-aminobenzoate as Linkers." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/39357006906200454546.
Full textAbstract:
碩士國立中正大學
化學暨生物化學研究所
104
Here we report the synthesis and characterization of a series of metal-organic frameworks (MOFs), resulted from the self-assembly of metal ions and entitled ligands, 2,5-dihydroxy-1,4-benzenedicarboxylic acid (DHBDC) and 3,3’,3”-s-triazine-1,3,5-triyl-m-tribenzoic acid (m-TATB): {[Ln2(H2-DHBDC)3(DMF)4]∙DMF}n (1) [Ln = Eu, Tb, Dy,Ho, Tm], {[Ln2(H2-DHBDC)3(DMF)4(H2O)2] ∙ DMF ∙ H2O}n (2) [Ln = La, Ce, Pr, Nd, Sm, Eu, Gd], [La2(H2-DHBDC)3(DEF)4]n (3), {[Ln2(H2-DHBDC)3(H2O)6] ∙4H2O}n (4) [Ln = La, Ce, Pr, Nd] and [La1La2(m-TATAB)(DMA)3]n (5) [Ln = Eu0.75Tb0.25, Eu0.25Tb0.75]. Single-crystal X-ray diffraction studies indicate 1 is a 3D metal-organic framwork. This is a known compound, but we use different lanthanides to synthesize this compounds. We can’t see the luminescence of Eu, Tb. Compound 2 is a 3D metal-organic framwork, two lanthanides atoms are bridged by four carboxylates. We can find the luminescence of DHBDC ligand in compounds 2a (La) and 2g (Gd). Compound 3 is a 3D structure. Two lanthanides ions are bridged by four carboxylate groups. In compound 3 we also can see the luminescence of DHBDC ligand. Compound 4 is a 2D metal-organic framwork. It have hydrogen bonds between layers byusing hydroxyl groups. Compound 5 is a mixed-lanthanides metal-organic framework, exhibiting interesting luminescent properties, attributing to ligand to metal antenna effect and inter lanthanide energy transfer.
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Das, Animesh. "New Pyrazole- and Triazine-Based Ligands as Scaffolds for Oligonuclear Complexes: From Multiredox Stability to Heteronuclear Single Molecule Magnets." Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-B06D-5.
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