In situ EPR and UV-vis spectroelectrochemistry of hole-transporting organic substrates.
Identifieur interne : 003998 ( Main/Exploration ); précédent : 003997; suivant : 003999In situ EPR and UV-vis spectroelectrochemistry of hole-transporting organic substrates.
Auteurs : RBID : pubmed:10727153English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Benzidines, Polymers, Pyrroles, Thiophenes.
- instrumentation : Electron Spin Resonance Spectroscopy, Spectrophotometry, Spectrophotometry, Ultraviolet.
- Electrochemistry, Electrodes, Oxidation-Reduction.
Abstract
A newly developed in situ electron paramagnetic resonance (EPR)/ultraviolet-visible (UV-vis) spectroelectrochemical cell equipped with a laminated indium-tin oxide (ITO) working electrode was used in the investigation of various organic substrates which are potential hole-transporting materials. The experiment demonstrated the possibility of using such a technique for examining redox behavior of conducting polymers (polypyrrole, PPy), oligomers (thiophene dimmer and quarterthiophene) and bis-anilines (N,N,N',N'-tetraphenylbenzidine, TPB). All investigated structures formed stable paramagnetic intermediates in the first oxidation step characterised with UV-vis spectra in the region 400-600 nm. In the second oxidation step EPR-silent di-cationic structures are formed with broad vis bands in the region 600-1000 nm. The measurement of the reference UV-vis spectra direct in the EPR cavity was possible using a specially-constructed non-contacted ITO plate in the spectroelectrochemical cell in the case of polypyrrole.
PubMed: 10727153
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">In situ EPR and UV-vis spectroelectrochemistry of hole-transporting organic substrates.</title><author><name sortKey="Rapta, P" uniqKey="Rapta P">P Rapta</name><affiliation><nlm:affiliation>Slovak Technical University, Bratislava, Slovak Republic. rapta@cvt.stuba.sk</nlm:affiliation><country wicri:rule="url">Slovaquie</country></affiliation></author><author><name sortKey="F Ber, R" uniqKey="F Ber R">R Fáber</name></author><author><name sortKey="Dunsch, L" uniqKey="Dunsch L">L Dunsch</name></author><author><name sortKey="Neudeck, A" uniqKey="Neudeck A">A Neudeck</name></author><author><name sortKey="Nuyken, O" uniqKey="Nuyken O">O Nuyken</name></author></titleStmt><publicationStmt><date when="2000">2000</date><idno type="RBID">pubmed:10727153</idno><idno type="pmid">10727153</idno><idno type="wicri:Area/Main/Corpus">003D21</idno><idno type="wicri:Area/Main/Curation">003D21</idno><idno type="wicri:Area/Main/Exploration">003998</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Benzidines (chemistry)</term><term>Electrochemistry</term><term>Electrodes</term><term>Electron Spin Resonance Spectroscopy (instrumentation)</term><term>Oxidation-Reduction</term><term>Polymers (chemistry)</term><term>Pyrroles (chemistry)</term><term>Spectrophotometry (instrumentation)</term><term>Spectrophotometry, Ultraviolet (instrumentation)</term><term>Thiophenes (chemistry)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Benzidines</term><term>Polymers</term><term>Pyrroles</term><term>Thiophenes</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Electron Spin Resonance Spectroscopy</term><term>Spectrophotometry</term><term>Spectrophotometry, Ultraviolet</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electrochemistry</term><term>Electrodes</term><term>Oxidation-Reduction</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A newly developed in situ electron paramagnetic resonance (EPR)/ultraviolet-visible (UV-vis) spectroelectrochemical cell equipped with a laminated indium-tin oxide (ITO) working electrode was used in the investigation of various organic substrates which are potential hole-transporting materials. The experiment demonstrated the possibility of using such a technique for examining redox behavior of conducting polymers (polypyrrole, PPy), oligomers (thiophene dimmer and quarterthiophene) and bis-anilines (N,N,N',N'-tetraphenylbenzidine, TPB). All investigated structures formed stable paramagnetic intermediates in the first oxidation step characterised with UV-vis spectra in the region 400-600 nm. In the second oxidation step EPR-silent di-cationic structures are formed with broad vis bands in the region 600-1000 nm. The measurement of the reference UV-vis spectra direct in the EPR cavity was possible using a specially-constructed non-contacted ITO plate in the spectroelectrochemical cell in the case of polypyrrole.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">10727153</PMID><DateCreated><Year>2000</Year><Month>06</Month><Day>23</Day></DateCreated><DateCompleted><Year>2000</Year><Month>06</Month><Day>23</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1386-1425</ISSN><JournalIssue CitedMedium="Print"><Volume>56A</Volume><Issue>2</Issue><PubDate><Year>2000</Year><Month>Feb</Month><Day>1</Day></PubDate></JournalIssue><Title>Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy</Title><ISOAbbreviation>Spectrochim Acta A Mol Biomol Spectrosc</ISOAbbreviation></Journal><ArticleTitle>In situ EPR and UV-vis spectroelectrochemistry of hole-transporting organic substrates.</ArticleTitle><Pagination><MedlinePgn>357-62</MedlinePgn></Pagination><Abstract><AbstractText>A newly developed in situ electron paramagnetic resonance (EPR)/ultraviolet-visible (UV-vis) spectroelectrochemical cell equipped with a laminated indium-tin oxide (ITO) working electrode was used in the investigation of various organic substrates which are potential hole-transporting materials. The experiment demonstrated the possibility of using such a technique for examining redox behavior of conducting polymers (polypyrrole, PPy), oligomers (thiophene dimmer and quarterthiophene) and bis-anilines (N,N,N',N'-tetraphenylbenzidine, TPB). All investigated structures formed stable paramagnetic intermediates in the first oxidation step characterised with UV-vis spectra in the region 400-600 nm. In the second oxidation step EPR-silent di-cationic structures are formed with broad vis bands in the region 600-1000 nm. The measurement of the reference UV-vis spectra direct in the EPR cavity was possible using a specially-constructed non-contacted ITO plate in the spectroelectrochemical cell in the case of polypyrrole.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Rapta</LastName><ForeName>P</ForeName><Initials>P</Initials><Affiliation>Slovak Technical University, Bratislava, Slovak Republic. rapta@cvt.stuba.sk</Affiliation></Author><Author ValidYN="Y"><LastName>Fáber</LastName><ForeName>R</ForeName><Initials>R</Initials></Author><Author ValidYN="Y"><LastName>Dunsch</LastName><ForeName>L</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Neudeck</LastName><ForeName>A</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Nuyken</LastName><ForeName>O</ForeName><Initials>O</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>ENGLAND</Country><MedlineTA>Spectrochim Acta A Mol Biomol Spectrosc</MedlineTA><NlmUniqueID>9602533</NlmUniqueID><ISSNLinking>1386-1425</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Benzidines</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Polymers</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Pyrroles</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Thiophenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>15546-43-7</RegistryNumber><NameOfSubstance>tetraphenylbenzidine</NameOfSubstance></Chemical><Chemical><RegistryNumber>30604-81-0</RegistryNumber><NameOfSubstance>polypyrrole</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Benzidines</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrochemistry</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrodes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electron Spin Resonance Spectroscopy</DescriptorName><QualifierName MajorTopicYN="Y">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Oxidation-Reduction</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Polymers</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Pyrroles</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Spectrophotometry</DescriptorName><QualifierName MajorTopicYN="Y">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Spectrophotometry, Ultraviolet</DescriptorName><QualifierName MajorTopicYN="Y">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Thiophenes</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2000</Year><Month>3</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2000</Year><Month>7</Month><Day>6</Day><Hour>11</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2000</Year><Month>3</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">10727153</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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