Photoinduced electron transfer in self-assembled monolayers of porphyrin-fullerene dyads on ITO.
Identifieur interne : 002C54 ( Main/Exploration ); précédent : 002C53; suivant : 002C55Photoinduced electron transfer in self-assembled monolayers of porphyrin-fullerene dyads on ITO.
Auteurs : RBID : pubmed:15982045English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Fullerenes, Porphyrins, Tin Compounds.
- Electrodes, Electrons, Photochemistry.
Abstract
Two porphyrin-fullerene dyads were synthesized to form self-assembled monolayers (SAMs) on indium-tin oxide (ITO) electrode, with either ITO-porphyrin-fullerene or ITO-fullerene-porphyrin orientations. The dyads contain two linkers for connecting the porphyrin and fullerene moieties and enforcing them essentially to similar geometries of the donor-acceptor pair, and two linkers to ensure the attachment of the dyads to the ITO surface with two desired opposite orientations. The transient photovoltage responses (Maxwell displacement charge) were measured for the dyad films covered by insulating LB films, thus ensuring that the dyads interact only with the ITO electrode. The direction of the electron transfer was from the photoexcited dyad to ITO independent of the dyad orientation. The response amplitude for the ITO-fullerene-porphyrin structure, where the primary intramolecular electron-transfer direction coincides with the direction of the final electron transfer from the dyad to ITO, was 25 times stronger than that for the opposite ITO-porphyrin-fullerene orientation of the dyad. Static photocurrent measurements in a liquid electrochemical cell, however, show only a minor orientation effect, indicating that the photocurrent generation is controlled by the processes at the SAM-liquid interface.
DOI: 10.1021/la0500833
PubMed: 15982045
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Photoinduced electron transfer in self-assembled monolayers of porphyrin-fullerene dyads on ITO.</title><author><name sortKey="Chukharev, Vladimir" uniqKey="Chukharev V">Vladimir Chukharev</name><affiliation wicri:level="1"><nlm:affiliation>Institute of Materials Chemistry, Tampere University of Technology, P.O. Box 541, 33101 Tampere, Finland. vladimir.chukharev@tut.fi</nlm:affiliation><country xml:lang="fr">Finlande</country><wicri:regionArea>Institute of Materials Chemistry, Tampere University of Technology, P.O. Box 541, 33101 Tampere</wicri:regionArea></affiliation></author><author><name sortKey="Vuorinen, Tommi" uniqKey="Vuorinen T">Tommi Vuorinen</name></author><author><name sortKey="Efimov, Alexander" uniqKey="Efimov A">Alexander Efimov</name></author><author><name sortKey="Tkachenko, Nikolai V" uniqKey="Tkachenko N">Nikolai V Tkachenko</name></author><author><name sortKey="Kimura, Makoto" uniqKey="Kimura M">Makoto Kimura</name></author><author><name sortKey="Fukuzumi, Shunichi" uniqKey="Fukuzumi S">Shunichi Fukuzumi</name></author><author><name sortKey="Imahori, Hiroshi" uniqKey="Imahori H">Hiroshi Imahori</name></author><author><name sortKey="Lemmetyinen, Helge" uniqKey="Lemmetyinen H">Helge Lemmetyinen</name></author></titleStmt><publicationStmt><date when="2005">2005</date><idno type="doi">10.1021/la0500833</idno><idno type="RBID">pubmed:15982045</idno><idno type="pmid">15982045</idno><idno type="wicri:Area/Main/Corpus">002E55</idno><idno type="wicri:Area/Main/Curation">002E55</idno><idno type="wicri:Area/Main/Exploration">002C54</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Electrodes</term><term>Electrons</term><term>Fullerenes (chemistry)</term><term>Photochemistry</term><term>Porphyrins (chemistry)</term><term>Tin Compounds (chemistry)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Fullerenes</term><term>Porphyrins</term><term>Tin Compounds</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electrodes</term><term>Electrons</term><term>Photochemistry</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Two porphyrin-fullerene dyads were synthesized to form self-assembled monolayers (SAMs) on indium-tin oxide (ITO) electrode, with either ITO-porphyrin-fullerene or ITO-fullerene-porphyrin orientations. The dyads contain two linkers for connecting the porphyrin and fullerene moieties and enforcing them essentially to similar geometries of the donor-acceptor pair, and two linkers to ensure the attachment of the dyads to the ITO surface with two desired opposite orientations. The transient photovoltage responses (Maxwell displacement charge) were measured for the dyad films covered by insulating LB films, thus ensuring that the dyads interact only with the ITO electrode. The direction of the electron transfer was from the photoexcited dyad to ITO independent of the dyad orientation. The response amplitude for the ITO-fullerene-porphyrin structure, where the primary intramolecular electron-transfer direction coincides with the direction of the final electron transfer from the dyad to ITO, was 25 times stronger than that for the opposite ITO-porphyrin-fullerene orientation of the dyad. Static photocurrent measurements in a liquid electrochemical cell, however, show only a minor orientation effect, indicating that the photocurrent generation is controlled by the processes at the SAM-liquid interface.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">15982045</PMID><DateCreated><Year>2005</Year><Month>06</Month><Day>28</Day></DateCreated><DateCompleted><Year>2006</Year><Month>08</Month><Day>21</Day></DateCompleted><Article PubModel="Print"><Journal><ISSN IssnType="Print">0743-7463</ISSN><JournalIssue CitedMedium="Print"><Volume>21</Volume><Issue>14</Issue><PubDate><Year>2005</Year><Month>Jul</Month><Day>5</Day></PubDate></JournalIssue><Title>Langmuir : the ACS journal of surfaces and colloids</Title><ISOAbbreviation>Langmuir</ISOAbbreviation></Journal><ArticleTitle>Photoinduced electron transfer in self-assembled monolayers of porphyrin-fullerene dyads on ITO.</ArticleTitle><Pagination><MedlinePgn>6385-91</MedlinePgn></Pagination><Abstract><AbstractText>Two porphyrin-fullerene dyads were synthesized to form self-assembled monolayers (SAMs) on indium-tin oxide (ITO) electrode, with either ITO-porphyrin-fullerene or ITO-fullerene-porphyrin orientations. The dyads contain two linkers for connecting the porphyrin and fullerene moieties and enforcing them essentially to similar geometries of the donor-acceptor pair, and two linkers to ensure the attachment of the dyads to the ITO surface with two desired opposite orientations. The transient photovoltage responses (Maxwell displacement charge) were measured for the dyad films covered by insulating LB films, thus ensuring that the dyads interact only with the ITO electrode. The direction of the electron transfer was from the photoexcited dyad to ITO independent of the dyad orientation. The response amplitude for the ITO-fullerene-porphyrin structure, where the primary intramolecular electron-transfer direction coincides with the direction of the final electron transfer from the dyad to ITO, was 25 times stronger than that for the opposite ITO-porphyrin-fullerene orientation of the dyad. Static photocurrent measurements in a liquid electrochemical cell, however, show only a minor orientation effect, indicating that the photocurrent generation is controlled by the processes at the SAM-liquid interface.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Chukharev</LastName><ForeName>Vladimir</ForeName><Initials>V</Initials><Affiliation>Institute of Materials Chemistry, Tampere University of Technology, P.O. Box 541, 33101 Tampere, Finland. vladimir.chukharev@tut.fi</Affiliation></Author><Author ValidYN="Y"><LastName>Vuorinen</LastName><ForeName>Tommi</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Efimov</LastName><ForeName>Alexander</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Tkachenko</LastName><ForeName>Nikolai V</ForeName><Initials>NV</Initials></Author><Author ValidYN="Y"><LastName>Kimura</LastName><ForeName>Makoto</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Fukuzumi</LastName><ForeName>Shunichi</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Imahori</LastName><ForeName>Hiroshi</ForeName><Initials>H</Initials></Author><Author ValidYN="Y"><LastName>Lemmetyinen</LastName><ForeName>Helge</ForeName><Initials>H</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Langmuir</MedlineTA><NlmUniqueID>9882736</NlmUniqueID><ISSNLinking>0743-7463</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Fullerenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Porphyrins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Tin Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>71243-84-0</RegistryNumber><NameOfSubstance>indium tin oxide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Electrodes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrons</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Fullerenes</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Photochemistry</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Porphyrins</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tin Compounds</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>6</Month><Day>29</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>8</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>6</Month><Day>29</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1021/la0500833</ArticleId><ArticleId IdType="pubmed">15982045</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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