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Tesis sobre el tema "Chelates"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Hogg, John Kirtley. "Conformation of metal chelates." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259482.

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2

Vohra, A. A. "Nickel chelates as dyes." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601469.

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The chelates of seven commercial disperse dyes with nickel, copper and chromium have been formed in cotton and in nylon 6 fabrics. Exhaustion dyeing was satisfactory on nylon 6 and subsequent treatment in the metal salt solution at optimum pH was followed by steaming. The cotton was pretreated with a urea/melamine precondensate with glyoxal formaldehyde, and a polyethylene glycol. Dye was introduced by vapor-transfer from coated paper. Chelation was achieved in a final step. The hue and brightness, fastness to Light, washing and perspiration were assessed for the dyed fabrics. The nickel compl

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3

Mistry, Jayshree. "Oat phytoalexins and magnesium chelates." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276204.

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4

Smith, Raymond John. "New chelates for protein radiolabelling." Thesis, University of Kent, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357228.

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5

Wubs, Harm Jan. "Application of iron chelates in hydrodesulphurisation." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 1994. http://irs.ub.rug.nl/ppn/298191733.

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6

Boros, Eszter. "Acyclic chelates for imaging with radiometals." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/44437.

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This thesis investigates acyclic chelates containing pyridine, carboxylate and amino groups and their fast and efficient and stable coordination of the (radio-)metals ⁹⁹mTc, Re, Cu, ⁶⁴Cu, Ga, ⁶⁷/⁶⁸Ga. The radiometals mentioned are all of significant interest for SPECT (single photon emission computed tomography) and PET (positron emission tomography) imaging, two of the most important non-invasive diagnostic tools in the clinic. The design, synthesis, radiolabelling, evaluation of stability, and in vivo investigation are presented for three variably charged, novel, short C₈ chain derivatized c

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7

Mitra, Amitabha. "GROUP 13 CHELATES IN PHOSPHATE DEALKYLATION." UKnowledge, 2006. http://uknowledge.uky.edu/gradschool_diss/293.

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A series of mononuclear boron halides of the type LBX2 (LH = N-phenyl-3,5-di-tbutylsalicylaldimine,X = Cl (2), Br (3)) and LBX ( LH2 = N-(2-hydroxyphenyl)-3,5-di-tbutylsalicylaldimine,X = Cl (7), Br (8); LH2 = N-(2-hydroxyethyl)-3,5-di-tbutylsalicylaldimine,X = Cl (9), Br (10); LH2= N-(3-hydroxypropyl)-3,5-di-tbutylsalicylaldimine,X = Cl (11), Br (12)) were synthesized from their borate precursorsLB(OMe)2 (1) (LH = N-phenyl-3,5-di-t-butylsalicylaldimine ) and LB(OMe) (LH2 = N-(2-hydroxyphenyl)-3,5-di-t-butylsalicylaldimine (4), N-(2-hydroxyethyl)-3,5-di-tbutylsalicylaldimine(5), N-(3-hydroxypr

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8

Pornsinlapatip, Pornpun. "Flow-injection solvent extraction of metal chelates." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284394.

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9

de, Witt G. Charmaine. "Biodistribution and biospeciation of samarium-153 chelates." Thesis, de Witt, G. Charmaine (1996) Biodistribution and biospeciation of samarium-153 chelates. PhD thesis, Murdoch University, 1996. https://researchrepository.murdoch.edu.au/id/eprint/51690/.

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Tumour localisation and biodistribution of several samarium-153 complexes have been investigated by evaluation of the speciation of these complexes in blood plasma using potentiometric titration data and computer modelling. Furthermore, the results of the simulations have been used to propose explanations of the observed biodistributions. Tissue distribution studies were used to evaluate the localisation of the samarium-153 complexes of the ligands DTPA, HEDTA, HIDA, BZ, PBH, PIH, NTA, citrate and chloride in C57/6J black mice bearing either melanotic or amelanotic B16 melanomas. The mice

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10

Eapen, M. J. "Solvent extraction of some transition metal chelates." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1986. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3279.

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11

Tran, Anh My. "Synthesis of bifunctional chelates for potential radiopharmaceutical applications." Thesis, University of Essex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247010.

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12

Chapman, Heather Mary. "Polymers containing chelates as optically responsive chemical sensors." Thesis, University of Greenwich, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307164.

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13

Kim, Yeong-Joon. "Symmetry of hydrogen bonds, metal chelates, and trithiapentalene /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1998. http://wwwlib.umi.com/cr/ucsd/fullcit?p9835379.

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14

Suthers, William G. "Regioselective copper (II) mediated protection of trans diols in D glucopyranosides." Thesis, University of Reading, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252231.

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15

Piyamongkol, Sirivipa. "The design and synthesis of 3-hydroxypyridin-4-one chelators." Thesis, King's College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368849.

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16

Ketterman, Joshua K. "Is Zinc a New Class of Neurotransmitter? A Presynaptic Model." Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1156349584.

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17

Werner, Andrew J. "Crocidolite dissolution in the presence of Fe chelators : implications for mineral-induced disease /." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-07102009-040306/.

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18

Faherty, Cathy. "Removal of heavy metals from wastewater using polyelectrolyte chelates." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252332.

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19

Bryson, Nathan John. "Neutral technetium (V) complexes with N,S-donor chelates." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14586.

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20

Griffin, Rowena. "New bifunctional chelates for use in positron emission tomography." Thesis, University of Leicester, 2007. http://hdl.handle.net/2381/29994.

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This project has focussed on synthesising a range of bifunctional chelators (BFCs) for use in nuclear medicine, in particular positron emission tomography (PET). When such BFCs are complexed to a M(III) ion the overall charge on the complex varies between -1 and -3; this is expected to affect the renal clearance and biodistribution of these complexes.;A range of novel BFCs were produced; the synthesis of each requiring the use of new di-ester pendant arms. The BFCs were coupled to a range of moieties, including a patented biologically active peptide designed to locate at the site of angiogenes

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21

Ballard, Beau Jurisson Silvia S. "Synthesis and evaluation of ¹⁰⁵Rhodium (III) complexes of phosphine chelate systems." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/6693.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 25, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Silvia Jurisson. Vita. Includes bibliographical references.

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22

Selvaranjan, Selvadurai. "Processable molecular lanthanide chelates for organic light emitting diodes (OLEDs)." Thesis, London South Bank University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618667.

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23

Warren, Richard L. "Studies on 3-oxo-N-phenylbutanamides and their metal chelates." Thesis, University of Leicester, 1990. http://hdl.handle.net/2381/33977.

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Ten compounds of the type CH3.CO.CHR.CO.NH.C6H5 have been prepared where R = -CH3, -C2H5, -n-C3H7, -i-C3H7, -n-C4H9, -i-C4H9, -Cl, -Br, -I and -SCN. Of these, only the -Cl, -Br, -I and - SCN derivatives and the parent compound (R = H) are capable of forming metal chelates, and the reasons for this are discussed. Metal chelates have been prepared with copper (II), iron (III) and chromium (III) ions. Proton nuclear magnetic resonance, infra-red and ultra-violet/visible spectroscopic techniques have been used to study the keto-enol equilibria of the compounds together with solvent and substituent

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24

Cross, Jason Patrick. "The development of luminescent lanthanide chelates for cellular based assays." Thesis, University of Surrey, 2002. http://epubs.surrey.ac.uk/773020/.

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In order for luminescent lanthanide complexes to be used in fluoroimmunoassays, a number of criteria must be adhered to, such as high quantum yield, high stability in aqueous media and insensitivity to the surrounding environment. In this thesis, a number of new ligand systems, designed with regard to achieving novel sensitising ligands of europium and terbium for use in cellular assays are discussed. A new ligand based upon a macrocyclic polyaminocarboxylate incorporating a single bipyridine chromophore and its complexes of europium and terbium are reported. Luminescence properties of both co

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25

Monzittu, Francesco Matteo. "Main group and transition metal-based chelates for PET applications." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/422231/.

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[AlCl3(BnMe2-tacn)] was radiolabelled by Cl/18F halide exchange reactions in the presence of 2.99 mol. equiv. of KF at pH 4 CH3CO2Na buffer solution with addition of 18F-target water, to give [Al18F19F2(BnMe2-tacn)] with RCY up to 24 %. The radio-product was purified through a simple SPE purification protocol in 99 % RCP and it shows excellent stability in 50 % EtOH/PBS solution for >3h. [GaF3(BnMe2-tacn)] can be successfully 18F-radiolabelled using a precursor concentration as low as 27 nM through 18F/19F isotopic exchange reactions, using 18F-target water in a 75 % MeCN/H2O solution, in good

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26

Hindocha, Sheena. "Towards the synthesis of novel chelates for technetium-99m imaging." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/29369.

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This thesis details the synthesis of tetradentate ligand systems for use with technetium-99m with a focus on sulphur donors. The synthesis of a series of S4 tetradentate ligands is detailed (Chapter 3). The ligands with general formula Me2PS(CH2)2S(CH2)nS(CH2)2PSMe2 where n = 2-4 (3.1-3.3). The ligands were reacted with technetium-99m, [ReO2(py)4]Cl and [ReOCl3(PPh3)2] unfortunately evidence for complexation was not obtained. In order to gain an understanding of the coordination chemistry of the ligands 3.1-3.3 were successfully complexed to Cu(I), Ag(I) and Pd(II) centres, the compounds and s

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27

Apicella, Pietro. "Process innovation in the production of chelates for agricultural uses." Doctoral thesis, Universita degli studi di Salerno, 2016. http://hdl.handle.net/10556/2186.

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2014 - 2015<br>Analyzing the literature available on the production of iron chelates, it is clear as these extremely diffused products are produced according to processes developed in the second part of last century which involve the enormous use of organic solvents, chlorinated substances and water. Although these processes have been optimized, they are not environmentally sustainable and imply high costs of post processing operations and disposal of dangerous substances. Based on this scenario, it is clear the necessity to develop a production process environmentally friendly, based on the

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28

Kreisel, Kevin Allen. "Organochromium chemistry with formally neutral, chelating ancillary ligands." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 292 p, 2008. http://proquest.umi.com/pqdweb?did=1456289501&sid=4&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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29

Li, Niya, and 李妮婭. "Meta-analysis of the safety of iron chelating agents." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208520.

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Background: Thalassaemia is a genetic disorder disease, one of the most clinically relevant haemoglobinopathies in paediatric population. It interferes with the synthesis of haemoglobin chain. For the sake of maintaining the serum haemoglobin at a normal level, regular blood cell transfusion is required to the patients with thalassaemia. In general, patients with thalassaemia are often diagnosed at an early age and need to take a life-long iron chelating therapy to prevent the multi-organ failure caused by iron-overload. The safety issue is considered a very importance aspect in the treatmen

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30

Buist, David. "The geometry of the bisimidazole chelate ringand [i.e. ring and] its selectivity for the largest metal ions." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-3/buistd/davidbuist.pdf.

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31

Whetstone, Paul Andrew. "Bifunctional metal chelates as tools for imaging, therapy and biomolecular study /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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32

Morale, Francesca. "Metallomesogens derived from Schiff-base chelates and related co-ordination chemistry." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269486.

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33

Gad, A. M. M. "Metal chelates as flame retardants and photostabilisers for some vinyl polymers." Thesis, City University London, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356010.

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34

Auzeloux, Philippe. "Pharmacomodulation de chelates techneties : application potentielle au diagnostic du melanome malin." Clermont-Ferrand 1, 1998. http://www.theses.fr/1998CLF1MM02.

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35

ADELAERE, BRUNO. "Ligands et chelates issus d'aryl-4 3h-dithiole-1,2 thiones-3." Nantes, 1989. http://www.theses.fr/1989NANT2066.

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La polycondensation de diols, de diacides et d'un chelate de ligand s,n-tetradentes bifonctionnalise, permet d'obtenir un heteropolymere de type resine polyester insature comportant dans sa structure intime, un chelate metallique. La preparation des metaux chelates presentant des extremites susceptibles d'etre copolymerisees, a necessite la fonctionnalisation en para du noyau aromatique d'aryl-4 3h-dithiole-1,2 thiones-3, produits de depart de la synthese. L'action des monoamines primaires et secondaires, et des diamines primaires, sur les sels de dithiolylium prepares a partir d'aryl-4 3h-dit

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36

Osinski, Allen Jordan. "Re(CO)₃ Template Formation of Diiminoisoindoline Based Chelates." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1522967085282879.

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37

Resetar, Lorri. "Characterization of chromophoric dissolved organic matter with iron chelates in rain water /." Electronic version (PDF), 2005. http://dl.uncw.edu/etd/2005/resetarl/lorriresetar.html.

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38

Habarurema, Gratien. "Rhenium complexes with multidentate imine-, amine-, thione-, thiol-, hydroxy- and carboxamide chelates." Thesis, Nelson Mandela Metropolitan University, 2016. http://hdl.handle.net/10948/12679.

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This study entails the synthesis, spectroscopic and structural characterization of new rhenium complexes with multidentate imine-, amine-, thione-, thiol-, hydroxy- and carboxamide chelates in various oxidation states. Rhenium(I) and (V) complexes with imidazolidine, pyrimidine and bridging pyridyl derivatives are reported in Chapter 3. The reactions of the potential tridentate N,N,Odonor ligand 2,2'-dipyridylketone (dpk) with trans-[ReOCl3(PPh3)2], (n-Bu4N)[ReOCl4] and trans-[ReOI2(OEt)(PPh3)2] led to the isolation of cis-[ReOCl2(edpm)], cis-[ReOCl2(dpk.OH)] and [ReO3(dpk.OH)] respectively (s

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39

Hutchison, Aaron Robert. "THE DESIGN AND SYNTHESIS OF NOVEL CHELATES FOR THE PRECIPITATION OF MERCURY." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_diss/519.

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Mercury has been an element of great industrial importance since early times.This wide utilization of the element has led to pervasive mercury contamination in theglobal environment. Due to mercury's high toxicity, this is a matter of great concern. Anumber of methods, includ ing phytoremediation, filtration, and precipitation/chelation,have been investigated to remove mercury from the environment. Unfortunately, thesemethods are not entirely satisfactory for the in-situ remediation of mercury from aqueousenvironments.The hypothesis of this dissertation is that this can best be accomplished by

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40

Jones, R. M. "Kinetics of the reactions of peroxyacids with metal ions, chelates and complexes." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381880.

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41

Elshewy, Ahmed. "Alpha hydroxy acid-containing chelates and their homo and hetero metallic complexes." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1563876435270199.

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42

Ndibewu, Peter Papoh. "A commercial process development for plant food formulation using polyprotic acids from natural extracts as chelating agents." Thesis, Nelson Mandela Metropolitan University, 2005. http://hdl.handle.net/10948/153.

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The citrus industry is one of South Africa's largest agricultural sectors in terms of export earnings with lemon fruits and juice as a trendsetter due to their high grade quality. According to growers, the Eastern Cape Province of South Africa alone produces an excess of about 10-14,000 tons of lemon juice which is presently of no economic value due to the sour taste and “bitterness”. As a result of this excess and in order to make use of the polyprotic acids naturally occurring in the lemon juice, four fertilizer nutrient mixtures are formulated, using lemon juice as base. From a conceptual s

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43

Qi, Weihong. "Characterization of Biochelators, Membrane Redox Systems, and Quinone Reductases from Wood Degrading Basidiomycetes." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/QiW2001.pdf.

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44

Legge, Matthew. "Structural studies of organometallic complexes." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263821.

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45

Nichols, Kristine Ann. "Role of iron in the accumulation of glomalin, an arbuscular mycorrhizal fungal glycoprotein." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=1178.

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Thesis (M.S.)--West Virginia University, 1999.<br>Title from document title page. Document formatted into pages; contains viii, 85 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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46

Howard, Maury Elizabeth. "Characterization of synthetic biopolymeric chelators for trace metal extraction and recovery /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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47

Benitez, Tenoch. "Salsola kali (tumbleweed) a possible biomonitoring device for the detection of airborne heavy metals /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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48

Payne, Katherine Marie. "Investigations into the Effects of Water Exchange and the Structure of Lanthanide Chelates." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3284.

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Lanthanide chelates are effective agents for improving contrast in MR images. Optimizing the relaxation of inner sphere water molecules is a common focus of research in this field. However, the efforts to design an optimal contrast agent have commonly over-looked the relationship of water position and water exchange kinetics. This work explores structural conformation, the impact of very fast water exchange kinetics on hydration, and differing tumbling rates for regioisomers of a number of lanthanide chelates. We have grown crystals of LnDOTMA and obtained structural data by X-ray diffraction

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49

Potgieter, Kim Carey. "Complexes of the ReO³⁺/Re(CO)₃cores with multidentate N,O-Donor chelates." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1225.

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This study investigates the coordination modes of multidentate N,O-donor ligands toward the [ReVO]3+ and fac-[ReI(CO)3]+ cores. The reactions of trans-[ReOX3(PPh3)2] (X = Cl, Br) with 4-aminoantipyrine (H2pap) were studied, and the complexes cis-[ReX2(pap)(H2pap)(PPh3)](ReO4) were isolated. The X-ray crystal structures show that both complexes display a distorted octahedral geometry around the central rhenium atom, and are mirror images of each other. The ligand pap is coordinated monodentately through the doubly deprotonated amino nitrogen as an imide, and H2pap acts as a neutral bidentate ch

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50

ABEY, JANE E. "SYNTHESIS, CHARACTERIZATION AND RELAXIVITY OF POLYMERIC GADOLINIUM CHELATES AS POTENTIAL MRI CONTRAST AGENTS." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1084460201.

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