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Dissertations / Theses on the topic 'Heterocyclic Dye'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Clemence, Nathan C. "Pyrolytic syntheses of 6,5,5 heterocyclic systems as novel magenta dye couplers." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/14577.

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Heterocyclic ring systems of the 6,5,5 azoloindole type have been found to have potential applications in colour photography as magenta dye couplers. The work described here has involved using flash vacuum pyrolysis (FVP) as a novel synthetic route to these tricyclic systems and structurally related tetracyclics. With new disconnections involving a key FVP stage, synthesis of complex ring systems can be reduced to as little as two or three steps, giving a significant advantage over more conventional synthetic routes. In this case FVP of substituted 2-(azolo)nitrobenzene and related heterocycli

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2

Walker, Philip Anthony. "Synthesis of functionalised benzothiophenes and novel heterocyclic dyes." Thesis, Bangor University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278813.

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3

Boyle, Kevin J. "Synthesis and properties of new heterocyclic metallised dyes." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/12580.

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Various 3-substituted isoquinolin-4-ols have been successfully synthesised by two different methodologies. Treatment of isoquinoline <i>N</i>-oxide with <i>p</i>-toluenesulfonyl chloride, provided 4-(<i>p</i>-toluenesulfonyloxy) isoquinoline in 30% yield and high purity <i>via </i>rearrangement of an intermediate <i>N</i>-(<i>p</i>-toluenesulfonyloxy) compound. Isoquinolin-4-ol was then obtained, after acid hydrolysis of 4-(<i>p</i>-toluenesulfonyloxy) isoquinoline. 3-Methylisoquinolin-4-ol has been synthesised in a similar manner and yield, from 3-methylisoquinoline <i>N</i>-oxide <i>via </i>

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4

Burrows, Kenneth Dvid. "The chemistry of some heterocyclic analogues of triphenylmethane dyes." Thesis, University of Central Lancashire, 1985. http://clok.uclan.ac.uk/20234/.

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A comprehensive series of triphenylmethane dyes has been synthesised in which the phenyl ring of Malachite Green has been replaced by a 5- or 6- membered heterocycle containing nitrogen, oxygen or sulphur as hetetâacoins. The visible absorption spectra of the dyes have been correlated with the electronic and structural features of the molecules. Novel analogues of Malachite Green have been prepared containing terminal pyrrolidine and N-methylpiperazine groups. Differences in the electronic absorption spectra of the parent dyes have been compared with those of related systems and the difference

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5

Iannarelli, Paul M. "Routes to novel azo compounds." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/3492.

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Routes to novel heterocyclic azo compounds and components of use as potential inkjet dyes were investigated. A new route to fluorenones from biphenyl acid chlorides using FVP (Flash Vacuum Pyrolysis) has been discovered. Fluorenone and 4-methylfluoren-9-one were prepared by FVP of 2-phenylbenzoyl chloride and 2-methylbiphenyl-2-carbonyl chloride respectively. Xanthen-9-one and thioxanthen-9-one were also prepared by FVP from the corresponding acid chlorides. 9-Phenanthrol could also be prepared via the FVP of biphenylacetyl choride and the application of this method to a heterocylic thiophene

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6

Bender, Christoph. "Stereoselektive Synthese neuartiger 1,2-Dihydroisochinoline als Vorstufen für die Alkaloidsynthese." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15728.

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Ausgangspunkte der vorliegenden Arbeit waren stereoselektive Synthesen von Reissert-Verbindungen über chirale N-Acylisochinoliniumsalze. Es galt die Konfiguration der erhaltenen Produkte zu beweisen und deren Synthesepotential zu erforschen. Ein Ziel dieser Arbeit war es, weiterführende Reaktionen für die Synthese von alkaloidanalogen Substanzen zu entwickeln. Es gelang, die Reissert-Reaktion mit Chlorameisensäurementhylester erfolgreich auf andere Heterocyclen als Isochinolin auszudehnen. Die Annahme eine stereoselektiven Verlaufes mußte korrigiert werden. Das Reissert-Produkt konnte mit eine

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7

Gragg, Jamie Loretta. "Synthesis of Near-Infrared Heptamethine Cyanine Dyes." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/chemistry_theses/28.

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Carbocyanine dyes are organic compounds containing chains of conjugated methine groups with electron-donating and electron-withdrawing substituents at the terminal heterocycles of the general formula [R1-(CH)n-R2]+X-. The synthetic methodology and optical properties of carbocyanines will be discussed. This thesis consists of two parts: (A) synthesis and optical properties of novel carbocyanine dyes substituted with various amines and the synthesis of unsymmetrical carbocyanine dyes containing monofunctional groups for bioconjugation. (B) synthesis of heptamethine carbocyanine dyes to be used f

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8

Thireau, Jérémy. "Conception et synthèse de ligands fluorescents des récepteurs de la mélatonine." Thesis, Orléans, 2013. http://www.theses.fr/2013ORLE2003.

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La mélatonine est une neurohormone synthétisée au niveau de la glande pinéale durant la période nocturne chez l'ensemble des mammifères. Les sécrétions de cette hormone circulante par voie sanguine permette à tout système doté de récepteurs mélatoninergiques (MT1, MT2) de transmettre l'information de photopériode entrainant ainsi une adaptation aux périodes jour/nuit. La mélatonine est impliquée dans de nombreuses fonctions biologiques mais aussi dans diverses pathologies du système nerveux central tel que les troubles du rythmes circadien, l'anxiété, la dépression… A l'heure actuelle, il exis

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9

CHEHIMI, MOHAMED-MEHDI. "Applications de l'esca a l'analyse de materiaux organiques : etude de quelques merocyanines." Paris 7, 1988. http://www.theses.fr/1988PA077218.

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Examen des possibilites offertes par l'esca pour l'etude des polarites des liaisons, la distribution des cgarges et les transferts de charge intramoleculaires dans les composes organiques. Etude des correlations energie de liaison - charge atomique afin d'estimer les charges portees par les heteroatomes des merocyanines etudiees. Etude des problemes poses par l'analyse esca des composes organiques et des effets de la polarisation electrique du porte-echantillon

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10

Souffrin, Agathe. "Conception, synthèse et évaluation pharmacologique de maléimides, inhibiteurs potentiels de l'intégrase du VIH-1." Thesis, Tours, 2012. http://www.theses.fr/2012TOUR3801/document.

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Notre équipe de recherche a récemment développé les premiers inhibiteurs d’une enzyme à DDE, la transposase MOS1, une enzyme analogue à l’intégrase du VIH-1. Ces molécules, de type bisfurylmaléimides, ont également montré une efficacité contre les activités enzymatiques de l’intégrase du VIH. En se basant sur ces résultats, nous avons entrepris la synthèse de nouveaux bisfurylmaléimides dans le but d’identifier de nouveaux inhibiteurs de l’intégrase et de proposer de nouvelles molécules dans la lutte contre le virus responsable du SIDA. L’originalité de notre démarche est l’utilisation de la t

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11

Abdulmwli, Mhamoued A. A. "Biomarkers of Genotoxic and Reprotoxic Effects after Chemical Exposure. The genotoxic effects due to the respiratory disease of Tuberculosis (TB) patients compared to healthy controls in diploid lymphocyte and haploid sperm cells, after treated with two heterocyclic amines and quercetin in bulk and nano forms." Thesis, University of Bradford, 2019. http://hdl.handle.net/10454/18335.

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In the tuberculosis patients, Mycobacterium tuberculosis can stimulate production of hydrogen peroxide in the host as a result of immune response. The H2O2 accumulate in pulmonary cells, causing oxidative stress that could lead to the cancer. We select TB patients for this study which investigates the effects of quercetin as there is an increased incidence of latent TB among the migrant population in the past few years and TB can increase the risk of cancer. Sperm and lymphocytes were treated with DNA damage inducers and quercetin (10µM, 25µM and 100µM), the responses evaluated usi

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12

Delatour, Thierry. "Mise en évidence par spectrométries optiques de formes tautomères caractéristiques d'un pyridylazo diethylaminophénol." Nancy 1, 1987. http://www.theses.fr/1987NAN10159.

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Étude des structures tautomériques du (bromo-5 pyridyl-2-azo)-2 diethylamino-5 phénol par spectrométrie ir, visible, d'émission visible et de diffusion raman de résonance. Attribution des transitions électroniques et vibrationnelles principales. Seules les structures quinoniques sont observées, la forme azo n'apparaissant pas en quantité détectable

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13

Chang, Shu-Nung, and 張書噥. "Synthesis of Porphyrins with a Heterocyclic Pull Unit for Dye-Sensitized Solar Cells." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/33893173613706129904.

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碩士<br>國立中興大學<br>化學系所<br>100<br>We previously reported a series of zinc porphyrins with a push-pull framework. The photoelectric conversion efficiency of YD2 is 11%, hence we use YD2 as the main structure and modify the substituents of phenyl rings on the porphyrins. Long alkoxyl chains instead of tert-butyls were connected to the ortho positions of meso-phenyl groups to avoid the aggregation of porphyrin molecules and the contact between electrolyte and porphyrins. The devices made from co-adsorption of YD2-o-C8 and the organic dye Y123 achieves a photoelectric conversion efficiency of 12.3%.

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14

Shen, Ming-Tai, and 沈銘泰. "Imino-N-Heterocyclic Carbene and Imino-Pyridine Based Ruthenium Sensitizers for Dye-Sensitized Solar Cell Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/dvv3xx.

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碩士<br>國立中央大學<br>化學學系<br>101<br>Novel imino-pyridine based ruthenium sensitizers IP102 and IP104 were designed and synthesized for application in dye-sensitized solar cells. Sensitizer IP102 showed the conversion efficiency (η) of 2.04% in which one of the thiocyanate ligand was positioned trans to the imine ligand while other trans to the bipyridine ligand. The sensitizer IP104 in which the imine ancillary ligand was substituted with phenyl group, the thiocyanate ligands attached to the ruthenium metal were found positioned opposite to each other. The electronic properties of sensitizer IP104

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15

Li, Chung-yen, and 李忠諺. "Synthesis of Ruthenium Complexes Bearing N-Heterocyclic Carbene Anchoring Ligands: Applications in Dye Sensitized Solar Cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/4x95th.

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博士<br>國立中央大學<br>化學學系<br>101<br>Abstract Today we primarily use fossil fuels and nuclear energy to heat and power our homes as well as fuel our cars. While we heavily rely on these energy resources for meeting our daily needs, they’re indeed limited on the Earth. We’re using them much more rapidly than they are being created. Eventually, they will run out, and because of the safety concerns and waste disposal problems, renewable energy is becoming a more pressing and the clear choice for future consumer and corporate usage. As such, solar technologies have been gaining its popularity in rece

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16

Chang, Hung-Yuan, and 張鴻元. "Synthesis of Ruthenium(II) Complexes containing N-Heterocyclic Carbene-Pyridine Ligands for Dye-Sensitized Solar Cell Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/dvs595.

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碩士<br>國立中央大學<br>化學學系<br>101<br>Dye-Sensitized Solar Cells (DSSCs) is characterized by thin, flexible, being made of large area, and so on. So it does agree with the area of solar generator developments. The purpose is to enhance the efficiency of conversion of solar-to-electrical energy, and there have many factors to effect the conversion of solar-to-electrical energy. This thesis synthesize novel ruthenium(II) complexes to improve the solar-to-electrical conversion efficiencies. 　　Following the development of CifPR in our laboratory, we designed two complexes of CI series that injected the t

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17

Chen, Tzu-jung, and 陳姿蓉. "Synthesis of N-Heterocyclic Carbene Based Sensitizers Containing 1,3-Dipyridyl-1H-Benzimidazole for Dye Sensitized Solar Cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/p4yve3.

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碩士<br>國立中央大學<br>化學學系<br>101<br>When people are pursuit of advances and comfortable life, sometimes ignore the imperceptibly consumes of energy, resulting in energy depletion. For the sustainable development of civilization, people have to solve the problem about energy exhausted and increasing the environmental awareness. Dye sensitized Solar Cells were developed since 1991. Recently, scientists are working hard in the development of the new generation dyes in order to having the higher conversion efficiency than the famous dye, N719. In this paper, according to our previous experience in the

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18

Li, Ting-Yu, and 李庭育. "Highly Efficient N-Heterocyclic Carbene-Pyridine-Based Ruthenium Sensitizers: A Promising New Generation of Complexes for Dye-Sensitized Solar Cells." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/82598939891612589653.

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碩士<br>國立中央大學<br>化學研究所<br>98<br>N-Heterocyclic carbene-pyridine-based ruthenium sensitizers derived from benzimidazolium salts provide dye-sensitized solar cells exhibiting superior performance in terms of their current densities, cell voltages and photoelectric conversion efficiencies. A solar cell sensitized with CBTR provided values of Jsc, Voc and η of 20.0 mAcm-2, 730 mV and 9.69 %, respectively, under AM 1.5 irradiation (100 mWcm-2); this performance exceeds that obtained using the traditional N719 dye (Jsc = 18.6 mAcm-2; Voc = 700 mV; η = 8.98 %).

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19

Fernandes, Sara Sofia Marques. "Push-pull π-conjugated heterocyclic systems and organometallic complexes: design, synthesis and application for second-order nonlinear optics (NLO) and for dye-sensitized solar cells (DSSCs)". Doctoral thesis, 2017. http://hdl.handle.net/1822/74735.

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Tese de Doutoramento em Ciências (Especialidade em Química)<br>The development of push-pull substituted heterocyclic systems has been an intensely active area of research for the past decades. Due to their easy synthesis and well-defined structures which can be tuned to produce systems with unique or enhanced properties, (hetero)aromatic p-conjugated systems have become fundamental building blocks in materials science. In fact, these versatile systems are essential components in a variety of technologies including optoelectronics, molecular switches, field-effect transistors (OFETs), ligh

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20

FU, ZI-LIANG, and 傅子亮. "Photofading kinetics and tautomerism of heterocyclic Azo disperse dyes." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/40732238581719926547.

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21

"Monosakkariede as uitgangstowwe vir die sintese van heterosikliese prostaglandienanaloë." Thesis, 2014. http://hdl.handle.net/10210/13089.

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22

Lin, yun-cheng, and 林耘丞. "Synthesis and dyeing characteristics of thiophene and thiadiazole heterocyclic azo dyes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/hcyqx4.

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23

Yen, Ming-Shien, and 顏明賢. "A Facile Syntheses and Characterization of some Bis-Heterocyclic Aromatic Monoazo Dyes." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/67329266455516641737.

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博士<br>國立臺灣科技大學<br>高分子工程系<br>92<br>In this thesis, a novel bis-heterocyclic aromatic monoazo dyes derived from thiazoles and thiophenes ietermediates have been developed by five parts. Firstly, the intermediates which contain the 4-Aryl-3-cyano-2- aminothiophenes 5a-5c, Poly-substituted-3-methyl-2-aminothiophenes 8a-8c, 4-Aryl-2-aminothiazole 11a-11c, 2-Cyano methylbenzothiazole 13, N-substituted-3-cyano-4-methyl-6-hydroxy-2-pyridone 15a-15c, N-subst- ituted-3-methyl-l-pyrazol-5-one 17a-17c have been synthesized. Secondly, series of 2-Amino-4-aryl-5-(aryl or hetaryl)-2-azo)-thiophene-3- carbo

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24

湯基財. "Synthesis of symmetrical and asymmetric hetaryl disazo dyes derived from pyrazolo[1,5-a]pyrimidine heterocyclic compound." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/07849379303980178050.

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碩士<br>國立臺灣科技大學<br>高分子工程系<br>93<br>In this study，4-hetarylazo-3,5-diaminopyrazole compounds have been synthesized by reaction of hetarylazo-malononitrile with hydrazine hydrate.The symmetrical 3,6-bis-heteroylazo-2,5,7- triamino-pyrazolo[1,5-a]pyrimidine heterocyclic disazo dyes have been prepared by the cyclization of 4-hetarylazo-3,5 -diamino-pyrazoles with different hetarylazo-malononitriles. The solvatochromic behaviour of these disazo dyes in various solvents was evaluated.The structures of these compounds were determined by spectrometry(UV、FT-IR、MS、1H-NMR).

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25

Tsai, Pi-Chen, and 蔡弼丞. "Synthesis and Solvatochromic Properties of Some Novel Symmetrical and Asymmetrical Heterocyclic Disazo Dyes Based on Pyrazolo[1,5-a]Pyrimidine Derivatives." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/49g7pn.

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博士<br>國立臺灣科技大學<br>高分子系<br>95<br>The disertation consists of two main themes: Firstiy, (1) 3,5-Di-(amino or methyl)-4-substituted-azoly-pyrazole and 3-amino-5- methyl-4-substituted-azoly-pyrazole have been synthesized via the cyclization from hydrazine hydrate with 2-substituted-azoly-malono- nitrile, 3-sub-stituted-azoly-pentane-2,4-dione and 3-imino-2-substitu- ted-azoly-butyronitrile, respectively; and (2) 5-amino-3-methyl-4-substi -tuted-azoly-pyrazole and 3-amino-4-substituted-azoly-5-pyrazolone were prepared by coupling reaction of aniline derivatives with 3-amino-5-pyrazolone and 5-amino

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