Synthesis, photophysical and photochemical studies of new water-soluble indium(III) phthalocyanines.
Identifieur interne : 002523 ( Main/Exploration ); précédent : 002522; suivant : 002524Synthesis, photophysical and photochemical studies of new water-soluble indium(III) phthalocyanines.
Auteurs : RBID : pubmed:17549268Abstract
The preparation of water-soluble indium(III)phthalocyanine complexes is described for the first time in this study. Peripherally and non-peripherally 3-hydroxypyridine tetrasubstituted indium(III) phthalocyanines (5a, 6a) and their quaternarized derivatives (5b, 6b) have been synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy, electronic spectroscopy and mass spectra. The quaternarized compounds (5b, 6b) show excellent solubility in water, which makes them potential photosensitizers for use in photodynamic therapy (PDT) applications. Photochemical and photophysical measurements were conducted on 3-pyridyloxy appended indium(III) phthalocyanines in dimethylsulfoxide (DMSO) for non-ionic (5a, 6a) and in both DMSO and water for quaternarized (5b, 6b) derivatives. General trends are described for quantum yields of photodegradation, fluorescence lifetimes, fluorescence quantum yields, triplet lifetimes and triplet quantum yields as well as singlet oxygen quantum yields of these compounds. The singlet oxygen quantum yields (Phi(Delta)), which give an indication of the potential of the complexes as photosensitizers in applications where singlet oxygen is required (Type II mechanism) are very high (Phi(Delta) > 0.55). Thus, these complexes may be useful as Type II photosensitizers.
DOI: 10.1039/b618478b
PubMed: 17549268
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Synthesis, photophysical and photochemical studies of new water-soluble indium(III) phthalocyanines.</title><author><name sortKey="Durmu, Mahmut" uniqKey="Durmu M">Mahmut Durmuş</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Chemistry, Rhodes University, Grahamstown, 6140</wicri:regionArea></affiliation></author><author><name sortKey="Nyokong, Tebello" uniqKey="Nyokong T">Tebello Nyokong</name></author></titleStmt><publicationStmt><date when="2007">2007</date><idno type="doi">10.1039/b618478b</idno><idno type="RBID">pubmed:17549268</idno><idno type="pmid">17549268</idno><idno type="wicri:Area/Main/Corpus">002776</idno><idno type="wicri:Area/Main/Curation">002776</idno><idno type="wicri:Area/Main/Exploration">002523</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The preparation of water-soluble indium(III)phthalocyanine complexes is described for the first time in this study. Peripherally and non-peripherally 3-hydroxypyridine tetrasubstituted indium(III) phthalocyanines (5a, 6a) and their quaternarized derivatives (5b, 6b) have been synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy, electronic spectroscopy and mass spectra. The quaternarized compounds (5b, 6b) show excellent solubility in water, which makes them potential photosensitizers for use in photodynamic therapy (PDT) applications. Photochemical and photophysical measurements were conducted on 3-pyridyloxy appended indium(III) phthalocyanines in dimethylsulfoxide (DMSO) for non-ionic (5a, 6a) and in both DMSO and water for quaternarized (5b, 6b) derivatives. General trends are described for quantum yields of photodegradation, fluorescence lifetimes, fluorescence quantum yields, triplet lifetimes and triplet quantum yields as well as singlet oxygen quantum yields of these compounds. The singlet oxygen quantum yields (Phi(Delta)), which give an indication of the potential of the complexes as photosensitizers in applications where singlet oxygen is required (Type II mechanism) are very high (Phi(Delta) > 0.55). Thus, these complexes may be useful as Type II photosensitizers.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">17549268</PMID><DateCreated><Year>2007</Year><Month>06</Month><Day>05</Day></DateCreated><DateCompleted><Year>2007</Year><Month>10</Month><Day>01</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">1474-905X</ISSN><JournalIssue CitedMedium="Print"><Volume>6</Volume><Issue>6</Issue><PubDate><Year>2007</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology</Title><ISOAbbreviation>Photochem. Photobiol. Sci.</ISOAbbreviation></Journal><ArticleTitle>Synthesis, photophysical and photochemical studies of new water-soluble indium(III) phthalocyanines.</ArticleTitle><Pagination><MedlinePgn>659-68</MedlinePgn></Pagination><Abstract><AbstractText>The preparation of water-soluble indium(III)phthalocyanine complexes is described for the first time in this study. Peripherally and non-peripherally 3-hydroxypyridine tetrasubstituted indium(III) phthalocyanines (5a, 6a) and their quaternarized derivatives (5b, 6b) have been synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy, electronic spectroscopy and mass spectra. The quaternarized compounds (5b, 6b) show excellent solubility in water, which makes them potential photosensitizers for use in photodynamic therapy (PDT) applications. Photochemical and photophysical measurements were conducted on 3-pyridyloxy appended indium(III) phthalocyanines in dimethylsulfoxide (DMSO) for non-ionic (5a, 6a) and in both DMSO and water for quaternarized (5b, 6b) derivatives. General trends are described for quantum yields of photodegradation, fluorescence lifetimes, fluorescence quantum yields, triplet lifetimes and triplet quantum yields as well as singlet oxygen quantum yields of these compounds. The singlet oxygen quantum yields (Phi(Delta)), which give an indication of the potential of the complexes as photosensitizers in applications where singlet oxygen is required (Type II mechanism) are very high (Phi(Delta) > 0.55). Thus, these complexes may be useful as Type II photosensitizers.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Durmuş</LastName><ForeName>Mahmut</ForeName><Initials>M</Initials><Affiliation>Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa.</Affiliation></Author><Author ValidYN="Y"><LastName>Nyokong</LastName><ForeName>Tebello</ForeName><Initials>T</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2007</Year><Month>02</Month><Day>15</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Photochem Photobiol Sci</MedlineTA><NlmUniqueID>101124451</NlmUniqueID><ISSNLinking>1474-905X</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2007</Year><Month>2</Month><Day>15</Day></PubMedPubDate><PubMedPubDate PubStatus="epublish"><Year>2007</Year><Month>6</Month><Day>5</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>6</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>6</Month><Day>6</Day><Hour>9</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>6</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1039/b618478b</ArticleId><ArticleId IdType="pubmed">17549268</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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