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Dissertations / Theses on the topic 'Cobalt(III) complexes'

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Published: 4 June 2021
Last updated: 26 July 2025

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1

Jane, Reuben Thomas. "Cobalt(III) Complexes For Surface Engineering." Thesis, University of Canterbury. Chemistry, 2010. http://hdl.handle.net/10092/4424.

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This thesis addresses the potential for use of cobalt(III) complexes for functionalisation of lightly oxidised iron surfaces. In Chapter 2 the preparation of cobalt(III) complexes of a series of ligands based on 1,1,1-tris(aminomethyl)ethane is described. The synthesis was approached in two ways. Firstly, preparation of functionalised triol molecules as precursors to functionalised triamine ligands was investigated. This approach utilised the Tollens condensation of aldehydes with formaldehyde. In a second approach, the functionalisation of tetrakis(aminomethyl)methane in which one amine arm h
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2

Telfer, Shane G. "The photochemistry of cobalt(III)-aminoacidato complexes." Thesis, University of Canterbury. Chemistry, 1999. http://hdl.handle.net/10092/7818.

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The photodecarboxylation reaction of Co(III)-aminocarboxylato complexes has been examined from several angles. Firstly, the currently accepted mechanism for the formation of [Co(bpy)(CHâ‚‚NHâ‚‚)]2+, following the UV photolysis of [Co(bpy)2(gly)]2+ (bpy = 2,2'-bipyridine, gly = glycinate), has been tested. A Co(II)-bound aminocyclopropylmethyl radical, with a lifetime of around 10^-4s, has been proposed as a reaction intermediate. This assertion was tested with the use of a radical clock, derived from chelated cyclopropylglycine. If a Co(II)-bound aminocyclopropylmethyl radical is formed, it wi
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3

Sun, Lihui. "Synthesis and reactivity of some cobalt-, phosphorus-chiral cobalt(III) complexes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ34235.pdf.

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4

Ernst, Margot Christiana. "Ab initio calculations on chiral cobalt (III) complexes." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/27429.

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5

McClintock, Lisa F., and n/a. "Studies of cobalt(III) complexes containing tripodal tetraamine ligands." University of Otago. Department of Chemistry, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080505.142115.

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The new Co(III) carbonate complexes [Co(uns-penp)(O₂CO)]ClO₄�H₂O and [Co(trpyn)(O₂CO)]ClO₄, containing tripodal tetraamine ligands, have been synthesised and characterised by microanalysis, �H, ��C and ⁵⁹Co NMR, mass spectrometry (MS) and UV-vis spectroscopy. In addition, the ⁵⁹Co NMR spectra have been obtained for two series of [Co(N₄)(O₂CO)]⁺ complexes containing aliphatic (N₄ = tren, baep, abap, trpn) and pyridyl (N₄ = tpa, pmea, pmap, tepa) tripodal tetraamine ligands and the complex [Co(dppa)(O₂CO)]⁺. The ⁵⁹Co NMR signal increases as [Delta] decreases, indicating there is less electron de
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6

McCombs, Michelle. "A 59-Cobalt NMR Investigation of the Hydrogen/Deuterium Exchange Kinetics in Cobalt(III) Complexes." TopSCHOLAR®, 2003. http://digitalcommons.wku.edu/theses/554.

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Currently, the hydrogen/deuterium exchange kinetics in cobalt(III) complexes are being investigated. In the presence of deuterated solvents, (e.g. D2 0 and CH3CH20D) the amine hydrogens in the complexes are exchanged for deuteriums. For the hexaamminecobalt(III) ion, 19 isotopmers (H18D0 to HOD 18) are possible. For the tris(ethylenediammine)cobalt(III) ion, 13 isotopmers (HI 2D0 to HOD 12) are possible. Each hydrogen/deuteruim exchange causes a shift in the observed 59Co resonance of approximately 6 ppm. The rate constant of the hydrogen-deuterium exchange for the first H-D exchange has been
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7

Simonato, Jean-Pierre. "Chimie de coordination de la tétraméthylchiroporphyrine avec le fer(III), le cobalt(III) et le rhodium(III) : applications à l'analyse d'énantiomères d'amines, à la complexation énantiosélective d'aminoalcools, et à la catalyse d'aziridination asymétrique." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10051.

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Des complexes metalliques de la tetramethylchiroporphyrine, de symetrie et possedant des groupements meso derives du biocartol, ont ete synthetises, caracterises, et utilises dans quatre axes de recherches. _la caracterisation du complexe bis-ethanol de la tetramethylchiroporphyrine de fer(iii), en solution et en phase solide, revele que ce compose presente un etat de spin inhabituel : le spin intermediaire pur (s = 3/2). _l'insertion d'un metal diamagnetique, le cobalt(iii), coordonnant les amines au cur de la porphyrine, a permis l'analyse qualitative et quantitative de la composition de der
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8

Wilson-Coutts, Sarah Mary. "The Synthesis and Configuration of Some Polydentate Amino Acid Complexes of Cobalt(III)." Thesis, University of Canterbury. Chemistry, 2009. http://hdl.handle.net/10092/2788.

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This thesis reports a study of polydentate amino acid complexes of cobalt(III). The complexes prepared during this project have been characterized by a range of techniques, including ¹³C{¹H} and ¹H NMR spectroscopy, UV-visible spectroscopy, infra-red spectroscopy, elemental analysis and single crystal X-ray structure determination. A total of seven single crystal X-ray structure determinations have been performed during these studies. The imino acid polydentate complex, [Co(Aim₂trien)]₂[ZnCl₄], was reduced to the corresponding amino acid complex, [Co(A₂trien)]Cl, where as many as ten diastere
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9

Cai, Lezhen. "Mechanisms and salt effects in photoredox and quenching processes involving cobalt(III) complexes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21925.pdf.

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10

Jewiss, H. C. "Some coordination complexes of cobalt(III) and some related X-ray crystallographic studies." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373933.

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11

Spicer, M. D. "Higher oxidation state complexes of group Vb and VIb donor atom ligands : Compounds with cobalt(III) and copper(III)." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382971.

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12

Wang, Zekun. "La synthèse et la catalyse de complexes organométaliques de cobalt (III) de ligands chélateurs scorpionates." Electronic Thesis or Diss., Strasbourg, 2025. http://www.theses.fr/2025STRAF004.

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Cette thèse porte sur la synthèse et les applications catalytiques des complexes de cobalt(III) contenant des ligands chélatants de type scorpionate. Des ligands tris(pyrazolyl)borate (Tp) ont été utilisés pour former des complexes de cobalt présentant une diversité de propriétés structurelles et électroniques. Une exploration systématique de ces complexes révèle leur potentiel dans les transformations catalytiques, notamment dans les réactions de couplage carbone-carbone. En outre, le phénomène de spin-crossover observé dans les complexes de cobalt permet des transitions dynamiques entre les
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13

Rocha, Beatriz Aline Riga [UNESP]. "Síntese de ligantes diimínicos para obtenção de complexos organocobalto(III) para polimerização radicalar mediada por cobalto." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/149815.

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14

Simon, Evelyne. "Etude des complexes cobalt(III)-cyclame-acétylacétonate : élaboration d'électrodes modifiées par des films de polypyrrole porteurs du site redox : co-cyclame." Brest, 1997. http://www.theses.fr/1997BRES2001.

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L'objectif de ce travail est la realisation d'electrodes modifiees, portant le site redox co#i#i#i(cyclame), par electropolymerisation de monomeres de pyrrole sybstitues en position 1 ou 3 par le complexe metallique. Le premier chapitre est consacre aux rappels bibliographiques concernant les electrodes modifiees, le polypyrrole et le cobalt-cyclame. L'etude de la nature du site catalytique choisi, co#i#i#i(cyclame), est exposee dans le chapitre 2. La structure du complexe co#i#i#i(cyclame)(acac)(bf#4)#2 a ete etablie sans abmiguite par diverses techniques spectroscopiques, electrochimiques et
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15

Glenister, Alexandra. "Glucose conjugation to increase the uptake of metal complexes by cancer cells." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/16849.

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To improve the efficacy of anticancer chemotherapy it is necessary to develop targeted treatments, which can be achieved by exploiting differences between normal and cancerous cells. The avid consumption of glucose by cancer cells compared with normal cells has been known for almost a century. The increased glucose uptake and its modified metabolism by cancerous cells, known as the Warburg effect, is recognised as a hallmark of malignant cells. A Warburg effect targeting group, rationally designed to facilitate uptake by GLUTs and be retained in cells due to phosphorylation by HK, has been sy
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16

Mikros, Emmanouil. "Analyse conformationnelle en solution aqueuse de complexes d'acides aminés avec des porphyrines de cobalt (III) hydrosolubles." Paris 11, 1988. http://www.theses.fr/1988PA112219.

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A 1H NMR spectroscopic study of intramolecular interactions has been made for the octahedral complexes of cobalt (III) Co (L) (P) in water solutions. P refers to 4-N-methylpyridyl por­ phyrine(TMPyP) and 4carboxylphenylporphyrine(TCPP)and L to amino acid. Spectra obtained in various pH confirms the equilibrium between different complexes existing. When L contains two atoms which con bind to Co. An equilibrium also exists between different species. The stability of the complex increases with the basicity of the ligand. The conformation of the complexed aminoacids in L2CoTMPyP has been deduced f
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17

Mikros, Emmanouil. "Analyse conformationnelle en solution aqueuse de complexes d'acides aminés avec des porphyrines de cobalt (III) hydrosolubles." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376165321.

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18

Pérollier, Céline. "Synthèse de nouvelles métalloporhyrines chirales à substituants cyclopropaniques : applications en catalyse d'époxydation asymétrique et en reconnaissance moléculaire d'enantiomères." Université Joseph Fourier (Grenoble ; 1971-2015), 1998. http://www.theses.fr/1998GRE10191.

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Le biocartol ou acide (1r)-cis-hemicaronaldehydique, un compose cyclopropanique enantiopur provenant de la synthese industrielle d'insecticides pyrethroides, est utilise comme synthon pour la preparation de nouvelles porphyrines chirales. Nous decrivons la synthese d'amides du biocartol, puis la synthese des porphyrines correspondantes par condensation avec le pyrrole. Celles-ci sont obtenues exclusivement sous la forme de l'atropoisomere , avec un rendement variant de 7 a 60%. Une serie de complexes de manganese (iii) de ces chiroporphyrines, derivees d'amides et d'esters du biocartol, ont et
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19

Cromer, Rémy. "Porphyrines n-substituees : modelisation de l'inhibition d'hemoproteines." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13015.

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Migration cobalt-azote des groupements : phenyl et styryl. L'etude des reactions de migration dans les porphyrines de cobalt(iii) aryliques a justifie l'utilisation de ces dernieres pour modeliser l'hydrazinolyse des hemoproteines. Les porphyrines de cobalt(iii) aryliques ont un comportement analogue a celui des porphyrines de fer(iii) aryliques. Oxydation des styryl -co(iii) porphyrines. Mecanisme de reaction. Extension de cette reaction a la cyclisation en serie arylique qui permet la synthese de la premiere porphyrine n,n'-(phenylene-1,2) analogue du produit d'inhibition suicide obtenu apre
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20

Darbieu, Marie-Hélène. "Complexes modeles de la methylcobalamine (meb12) : comportement de la liaison co-c en presence de derives de l'etain iv." Toulouse 3, 1987. http://www.theses.fr/1987TOU30148.

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21

Cartier, dit Moulin Christophe. "Structures fines d'absorption des rayons X de complexes moléculaires d'éléments de transition de la premiere période." Paris 11, 1988. http://www.theses.fr/1988PA112002.

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Ce travail est consacré à l'étude par spectroscopie d'absorption des rayons X de complexes moléculaires d'éléments de transition de la première période. Une première partie porte sur l'étude fondamentale des structures fines au seuil d'absorption : nous utilisons la flexibilité de la chimie de coordination pour étudier des complexes de stéréochimie et de structure électronique variées. Pour des molécules discrètes de structure connue, nous mettons en évidence l'influence sur le seuil du degré d'oxydation et de l'état de spin de l'élément de transition, de la symétrie du site, des distances mét
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22

Brazi, Eric. "Activation de la liaison C-H hydroxylation catalytique des hydrocarbures par de nouveaux complexes alkylperoxydiques de cobalt (III), désydrogénation sélective et catalytique de cycloalcanes... /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603426w.

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23

Soibinet, Mathieu. "Complexes du cuivre (II), nickel (II) et cobalt (III) avec des ligands bis macrocycliques dérivés du cyclam et du cyclen : Synthèse, études thermodynamique et structurale." Reims, 2002. http://www.theses.fr/2002REIMS023.

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Des ligands bis-macrocycliques dérivés du cyclam ou du cyclen ont été obtenus par une nouvelle méthode de synthèse via un intermédiaire bis-cis-aminal. L'étude des propriétés thermodynamiques et structurales des complexes formés entre ces ligands et les cations cuivre(II), nickel(II) et cobalt(III) a été réalisée. En solution aqueuse, l'étude potentiométrique et spectroscopique (RPE, UV visible) des complexes du cuivre(II) a montré l'existence, selon la valeur du rapport R = [ligand]/[métal], de complexes mononucléaires ou dinucléaires de très grande stabilité. A l'état solide, les complexes d
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24

Brazi, Eric. "Activation de la liaison C-H : hydroxylation catalytique des hydrocarbures par de nouveaux complexes alkylperoxydiques de cobalt (iii), déshydrogénation sélective et catalytique de cycloalcanes en présence d'éponges à hydrogènes à base d'uranium métal." Paris 6, 1987. http://www.theses.fr/1987PA066680.

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25

Le, Mest Yves. "Etude des propriétés électrochimiques de biporphyrines de type "face-à-face" : réactivité des dérives du cobalt vis-à-vis de l'oxygène." Brest, 1988. http://www.theses.fr/1988BRES2013.

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26

Xavier, Fernando Roberto. "Novos complexos binucleares não-simétricos de ferro (III) cobalto(II) e de gálio(III) cobalto(II) como modelos miméticos para as fosfatases ácidas púrpuras metalo-substituídas." Florianópolis, SC, 2006. http://repositorio.ufsc.br/xmlui/handle/123456789/89225.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.<br>Made available in DSpace on 2012-10-22T18:16:43Z (GMT). No. of bitstreams: 1 230074.pdf: 2278286 bytes, checksum: 566304e98f55e0e1a2b3ede6927d6cf0 (MD5)<br>A natureza aprendeu a utilizar propriedades especiais dos metais para realizar uma ampla variedade de funções associadas aos sistemas vivos. Metaloproteínas que realizam funções catalíticas são denominadas de metaloenzimas, constituindo então uma classe especial de compostos bioinorgânicos. Nest
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27

Barbusse, Danielle. "Contribution à la caractérisation des matériaux : étude des couches minces, multicouches et superréseaux III-V et II-VI par double diffraction des rayons X (composition, qualité, contraintes) : étude structurale par absorption X au seuil K d'une série de complexes du cobalt et du fer, XANES et EXAFS de laboratoire." Montpellier 2, 1991. http://www.theses.fr/1991MON20189.

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Un dispositif experimental de double diffraction des rayons x a ete concu et realise au laboratoire. Des mesures de desaccords de maille inferieurs a 5. 10##3 sont accessibles. Dans la premiere partie, des etudes qualitatives (qualite cristalline) et quantitatives (composition, contraintes) ont ete effectuees sur des couches minces multicouches et superreseaux de semiconducteurs. La deuxieme partie montre la faisabilite d'une mesure d'absorption x au laboratoire. La fiabilite des resultats obtenus est demontree a partir de l'etude xanes et exafs au seuil k du fer et du cobalt dans quelques com
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28

Billaud, Claude. "Polymerisation de monomeres vinyliques amorcees par excitation a grande longueur d'onde du complexe azidopentaammine de cobalt (iii)." Clermont-Ferrand 2, 1999. http://www.theses.fr/1999CLF22171.

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Les reactions d'homopolymerisation et de copolymerisation de la n-vinylpyrrolidone (nvp) et du methacrylate de 2-hydroxyethyle (hema) photoamorcees par le complexe co(nh 3) 5n 3 2 + ont ete etudiees en solution aqueuse. Ce complexe de cobalt (iii) conduit a un processus de photo-oxydoreduction (formation de cobalt (ii) et du radical azide) sous excitation dans sa bande de transfert de charge (365 nm). Nous avons montre que cette reaction se produit egalement lors d'excitation dans sa bande due au champ des ligands (546 et 633 nm). En utilisant co(nh 3) 5n 3 2 +, nous avons pu realiser des reac
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29

Riga, Rocha Beatriz Aline. "Síntese de ligantes diimínicos para obtenção de complexos organocobalto(III) para polimerização radicalar mediada por cobalto /." São José do Rio Preto, 2017. http://hdl.handle.net/11449/149815.

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Orientador: Beatriz Eleutério Goi<br>Banca: Giovana Gioppo Nunes<br>Banca: Sérgio Antônio Marques de Lima<br>Resumo: Neste trabalho objetivou-se a síntese e caracterização de oito complexos de cobalto(II) que fossem aptos a atuarem como agentes controladores na Polimerização Radicalar Mediada por Cobalto do monômero acetato de vinila. Através da modulação da esfera de coordenação destes complexos com a alteração dos efeitos estéricos e eletrônicos promovidos pela coordenação de ligantes α-diiminas, buscou-se estabelecer parâmetros para propor a forma como estes complexos mediam a CMRP do refer
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30

Kim, Chung Sik. "Corrole Synthesis and Catalytic Applications Toward Cobalt(III)-Catalyzed Epoxidation, N-H Insertion, and Cyclopropanation." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3459.

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A variety of bromocorroles, useful precusors for Pd-based cross coupling, were sucessfully synthesized in moderate to good yields. Chiral corroles were also synthesized through use of chiral amides in the aforementioned cross coupling reactions. Cobalt complexes bearing π-acceptor (CNtBu) and σ-donor (PPh3) ligands were also prepared in excellent yields. In this dissertation, cobalt (III) corrole complexes were applied to three different reaction areas: epoxidation, N-H insertion, and cyclopropanation. Cobalt(III) corroles were found to be efficient catalysts for epoxidation reactions. The epo
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31

Westphalen, André Bilibio. "Investigação de propriedades no estado sólido de triazenos simétricos 1,3-diarilsubstituídos e complexos com Co(III) e Cu(II) com o ligante 1,3-bis(4-metoxicarbonilfenil)triazenido." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/10422.

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In this work it was synthesized and determinate the crystalline/molecular structure of two pré ligands triazene simetric: 1,3−bis−(4−acethylamidephenyl)triazene [H3CC(O)NHC6H4NNNC6H4NH(O)CCH3] (1) e o 1,3−bis−(4−ethoxicarbonylphenyl)triazene [H5C2OC(O)C6H4NNNC6H4C(O)OC2H5] (2), one Cu(II) complex (3) and one Co(III) complex (4), being that the two complexes involve the ligand 1,3-bis(4- methoxicarbonylphenyl)triazenide ligands previously deprotonated. Also it was presented the synthesis of pré ligand. The compound H3CC(O)NHC6H4NNNC6H4NH(O)CCH3] (1) crystallizes in monoclinic system, space grou
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32

Bucalon, Daniel Haguihara. "Complexos mono- e bimetálicos de cobre(II) e de cobalto(III) com bases de Schiff tridentadas e tetradentadas : Sínteses, caracterizações e estudos em reações catalíticas." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/7229.

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Mirjana, Radanović. "Kompleksi nekih prelaznih metala sa Šifovim bazama aminogvanidina." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=95548&source=NDLTD&language=en.

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&nbsp;&nbsp; U ovoj doktorskoj disertaciji opisane su sinteze novih kompleksa prelaznih metala sa piridoksiliden-&nbsp; (PLAG), odnosno saliciliden-aminogvanidinom (SALAG). Dobijenikompleksi su okarakterisani elementalnom analizom, IR spektrima, konduktometrijskim i magnetnim merenjima, a većina i rendgenskomstrukturnom analizom. Osim toga, dobijene su i nove forme ovih &Scaron;ifovih baza, i to u vidu monokristala, čime su omogućena ispitivanja njihovih&nbsp; molekulskih i kristalnih struktura, kao i uporedna analiza sa koordinovanim ligandima.&nbsp; &nbsp; Sa PLAG je sintetisano 7 novi&nbsp;
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34

Liao, Weng Cheng, and 廖文昌. "Homogeneous electron transfer of Cobalt(II);Cobalt(III); Iron(II) complexes." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/58480087531033576407.

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35

Saha, Sounik. "Studies on Photocytotoxic Iron(III) and Cobalt(III) Complexes Showing Structure-Activity Relationship." Thesis, 2010. http://etd.iisc.ac.in/handle/2005/3093.

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Photodynamic therapy(PDT) has recently emerged as a promising new non-invasive treatment modality for a large number of neoplastic and non-neoplastic lesions. Photoexcitation of a photosensitizing drug in the tumor tissue causes generation of reactive oxygen species which results in cell death. The current porphyrinic photosensitizers suffer a wide range of drawbacks leading to the development of the chemistry of alternative photosensitizing agents in PDT. Among them, the 4d and 5d transition metal-based photosensitizers have been explored extensively with the exception of the 3d metal compl
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Saha, Sounik. "Studies on Photocytotoxic Iron(III) and Cobalt(III) Complexes Showing Structure-Activity Relationship." Thesis, 2010. http://hdl.handle.net/2005/3093.

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Photodynamic therapy(PDT) has recently emerged as a promising new non-invasive treatment modality for a large number of neoplastic and non-neoplastic lesions. Photoexcitation of a photosensitizing drug in the tumor tissue causes generation of reactive oxygen species which results in cell death. The current porphyrinic photosensitizers suffer a wide range of drawbacks leading to the development of the chemistry of alternative photosensitizing agents in PDT. Among them, the 4d and 5d transition metal-based photosensitizers have been explored extensively with the exception of the 3d metal compl
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37

Garai, Aditya. "Studies on Iron and Cobalt Complexes showing Photo-induced Anticancer Activity." Thesis, 2016. https://etd.iisc.ac.in/handle/2005/4906.

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In this thesis the various facets of the chemistry of photocytotoxic iron and cobalt complexes have been investigated along with their syntheses, characterization, evaluation of the photocytotoxic activities in various cancer cell lines, mechanism of cell death, the cellular uptake, localization inside cells, photo release, the interaction with double stranded DNA and their ability to induce DNA photocleavage. Chapter I describes a general introduction on application of transition metal complexes for photochemotherapeutic activity. A brief introduction regarding Photodynamic Therapy (PDT) as
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Yuan-Chang, Li, and 李元章. "Coordination Chemistry of Cobalt(III) Complexes with Pentaaza- macrocyclic Ligands." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/77984721143359602059.

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39

Lahiri, Debojyoti. "Studies On The Cobalt And Complexes Showing Anaerobic DNA Photocleavage Activity." Thesis, 2010. https://etd.iisc.ac.in/handle/2005/1916.

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Photodynamic therapy (PDT) is a non-invasive treatment of cancer with an advantage of having localized photo-activation of the drug at the targeted tumor cells leaving the healthy cells unaffected by the photo-toxicity of the PDT agent. Organic molecules and 4d/5d metal complexes have been extensively studied for their DNA cleavage activity and photo-cytotoxicity in UV and/or visible light. The photoactivity of the current PDT drugs is due to reactive singlet oxygen species. To address the hypoxic nature within neoplasia and to get a realistic scenario to build model and potent PDT agents, at
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Lahiri, Debojyoti. "Studies On The Cobalt And Complexes Showing Anaerobic DNA Photocleavage Activity." Thesis, 2010. http://etd.iisc.ernet.in/handle/2005/1916.

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Photodynamic therapy (PDT) is a non-invasive treatment of cancer with an advantage of having localized photo-activation of the drug at the targeted tumor cells leaving the healthy cells unaffected by the photo-toxicity of the PDT agent. Organic molecules and 4d/5d metal complexes have been extensively studied for their DNA cleavage activity and photo-cytotoxicity in UV and/or visible light. The photoactivity of the current PDT drugs is due to reactive singlet oxygen species. To address the hypoxic nature within neoplasia and to get a realistic scenario to build model and potent PDT agents, att
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41

Cai, Lezhen. "Mechanisms and salt effects in photoredox and quenching process involving cobalt (III) complexes." Thesis, 1996. https://dspace.library.uvic.ca//handle/1828/9694.

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The novel complexes [special characters omitted] and [special characters omitted] were prepared and characterized. Photoredox quantum yields for the formation of [special characters omitted] from the above compounds were measured on irradiation at 360 nm to be 0.065, 0.082, 0.0088 and 0.0040 respectively. With added thiocyanate a significant increase in ΦCo2+ occurred. This can be modeled in two ways; (i) scavenging of thiocyanate radical from an initial caged radical pair giving 6-25 ps estimates for the lifetime of the latter species; (ii) photolysis of a thiocyanate/complex ion pair,
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42

Lin, Ying-Nan, and 林穎男. "The Effects of Chromium(III), Cobalt(III) and Vanadyl-Transferrin Complexes on Glucose Uptake in Muscle Cell." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/96079327332782842995.

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碩士<br>國立交通大學<br>生化工程研究所<br>93<br>The rate of mortality of diabetes in recent years increased seven times, from 6.5 people per 100,000 people in 1978 to 44.38 people in 2003. Moreover, diabetes also lead to other types of chronic disease, e.g., blood vessel disease, heart disease, kidney disease, hypertension and so on. In the present, the two classes of drug for treating diabetes are Sulphonylureas and Biguanides. Sulphonylureas promote the pancreas to secrete the insulin. The mechanism of Biguanides regulating the blood sugar is: inhibiting the appetite, postponing gut absorbing glucose and
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Siang-YuJhan and 詹翔淯. "Syntheses and magnetic studies of hexanuclear cobalt(III)-lanthanide and dinuclear lanthanide complexes." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09672723142896961677.

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碩士<br>國立成功大學<br>化學系碩博士班<br>101<br>This work contains two parts. In the first part, a 3d−4f heterometallic hexanuclear [CoIII2DyIII4(μ3-OH)2(salpa)4(NO3)4(OAc)4(H2O)2] (1) complex was synthesized from the reaction of Co(II) and Dy(III) ions with N-(2-hydroxybenzyl)-3-amino-1-propanol (H2salpa). The structure of complex 1 was determined by X-ray crystallography. Co was assigned as a CoIII ion, which is consistent with bond valence sum (BVS) calculations results. Because of the presence of diamagnetic CoIII ions, the magnetic properties of the heterometallic hexanuclear complex 1 can be attribute
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Wei, Chin-te, and 魏欽得. "Syntheses,Characterization and Nitrogen to Sulfur Fluxion of Cobalt(III) Complexes Containing Pyridi- nethiol." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/77376093018512916565.

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碩士<br>輔仁大學<br>化學學系<br>83<br>The reactions of the heterocyclic ligands 2-pyridine- thiol and 4-pyridinethiol with Pentaammine(trifluoro- methanesulfonato) cobalt(III) complex have been stud- ied. In basic solution these reactions give rise to N- bonded isomers which are characterized via H NMR, visible and infrared spectroscopy. In both cases there exist pH dependent nitrogen to sulfur isomerization reaction.
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(6954347), Susannah Dawn Cox Banziger. "Synthesis and Structural Studies of Donor-Bridge-Acceptor Complexes Based on Co(III)(cyclam) Acetylides." Thesis, 2019.

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<p>Obtaining a greater understanding of photo-induced electron-transfer (PET) processes is key to synthesizing photovoltaic materials with enhanced efficiency. Gaining knowledge about the structure property relationship in photo-active donor-bridge-acceptor (<i>D-B-A</i>) dyads will help to optimize electronic and photoelectronic materials. Metal acetylide complexes have attracted increasing interest for their potential applications as building blocks for electronic and photoelectronic materials. Their unique υ(C≡C) (2000-2100 cm<sup>-1</sup>) allows for selective excitation, making them an ap
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Wang, Shu-Li, and 王淑麗. "The Study of Oxidation Reaction of the Pentaammineruthenium(II)Complexes by Tris(2,2'-bipyridine)cobalt(III)." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/04413962549842828859.

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碩士<br>東海大學<br>化學系<br>88<br>Abstract Kinetic studies of the oxidations of Ru(NH3)5L2+ L=pyridine (py), 4,4￠-bipyridine (4,4￠-bpy), isonicotinamide (isn), 3- and 4-aminopyridines (ampy) and 4,4￠-dipyridylamine (dpa) complexes by Co(bpy)33+ (bpy=2,2￠-bipyridine) have been carried out at 25°C, pH=5~8, and m=0.10M. The corresponding rate constants are 3.34’102, 5.43’102, 1.30’102, 1.02’103, 2.61’104, 9.06’103 M-1s-1, respectively. Although some non-adiabaticity still being observed, the results of our system agree with the values predicted by Marcus￠ theory better than most of othe
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Lu, Yen Liu, and 劉律言. "The Study of Oxidation Reactions of Pentaammineruthenium(II) Complexes by Bis(2,2’:6’,2”-terpyridine)Cobalt(III)." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/94201566855377343998.

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碩士<br>東海大學<br>化學系<br>92<br>Kinetic studies of the oxidations of [Ru(NH3)5L]2+(L=pyridine(py), isonicotinamide(isn), 4,4’-bipyridine(4,4’-bpy), 4-aminopyridine(4-ampy) and [Fe(CN)54-ampy]3- complexes by [Co(tpy)2]3+(tpy = 2,2’:6’,2”-terpyridine) have been carried out at 25℃, pH=5~8, and μ= 0.1M LiCl. The corresponding rate constants are 1.49×103M-1s-1(py), 2.43×102M-1s-1(isn), 3.48×103M-1s-1(4,4’-bpy), 8.38×104 M-1s-1(4-ampy) and 1.97×104M-1s-1([Fe(CN)54-ampy]3-). The kinetic results of our system agree well with the values predicted by Marcus theory.
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"A study of the outer sphere interaction of some octahedral coordinated cobalt (III) complexes by 59Co nuclear magnetic resonance methods." Chinese University of Hong Kong, 1992. http://library.cuhk.edu.hk/record=b5887735.

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by Chung Sai Cheong.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1993.<br>Includes bibliographical references (leaves 94-99).<br>DESCRIPTIVE NOTE<br>ABSTRACT --- p.iii<br>ACKNOWLEDGEMENTS --- p.v<br>Chapter CHAPTER ONE: --- INTRODUCTION --- p.1<br>Chapter CHAPTER TWO: --- EXPERIMENTAL --- p.6<br>Chapter 2.1 --- Synthesis --- p.6<br>Chapter 2.2 --- NMR Measurement --- p.6<br>Chapter 2.2.1 --- Solid State 59Co NMR --- p.6<br>Chapter 2.2.2 --- Solution NMR --- p.7<br>Chapter 2.2.2.1 --- 59Co NMR Measurements --- p.7<br>Chapter 2.2.2.2 --- 13C NMR Measurements --- p.8<br>Chapte
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Tshabalala, Oupa Samuel. "The development of FT-Raman techniques to quantify the hydrolysis of Cobalt (III) nitrophenylphosphate complexes using multivariate data analysis." Diss., 2007. http://hdl.handle.net/10500/23202.

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The FT-Raman techniques were developed to quantify reactions that follow on mixing aqueous solutions of bis-(1,3-diaminopropane)diaquacobalt( III) ion ([Co(tn)2(0H)(H20)]2+) and p-nitrophenylphosphate (PNPP). For the development and validation of the kinetic modelling technique, the well-studied inversion of sucrose was utilized. Rate constants and concentrations could be estimated using calibration solutions and modelling methods. It was found that the results obtained are comparable to literature values. Hence this technique could be further used for the [Co(tn)2(0H)(H20)]2+ assiste
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Ζαγοραίου, Ειρήνη. "Σύμπλοκες ενώσεις του κοβαλτίου(ΙΙΙ) με τριδοντικές βάσεις Schiff που προκύπτουν από τη σαλικυλική αλδεΰδη και υποκατεστημένες 2-αμινοφαινόλες". Thesis, 2012. http://hdl.handle.net/10889/6194.

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Σε αυτή την εργασία περιγράφονται οι αντιδράσεις αλάτων του κοβαλτίου(ΙΙ) [Co(O2CMe)2•4H2O, Co(ClO4)2•6H2O και Co(O2CPh)2] με την Ν-σαλικυλιδενο-4- μεθυλο-ο-αμινοφαινόλη (saphΗ2-4Me), την Ν-σαλικυλιδενο-4-χλωρο-ο-αμινοφαινόλη (saphΗ2-4Cl) και την Ν-σαλικυλιδενο-ο-αμινοφαινόλη (saphΗ2). Από τo σύστημα αντίδρασης Co(O2CMe)2•4H2O/saphΗ2-4Me/ΝaΟΗ σε διαλύτη MeOH απομονώθηκε ένα οκταεδρικό σύμπλοκο με τύπο (Η5Ο2)[CoΙΙΙ(saph-4Me)2]•H2O (1). Χρησιμοποιώντας την Εt3N ως βάση, από ένα ανάλογο σύστημα αντίδρασης, απομονώθηκε ένα οκταεδρικό σύμπλοκο με τύπο (Εt3NH)[CoΙΙΙ(saph-4Me)2]•ΜeCΟ2Η•MeOH (2). Απ
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