Metal-organic frameworks as hosts for photochromic guest molecules.
Identifieur interne : 000555 ( Main/Exploration ); précédent : 000554; suivant : 000556Metal-organic frameworks as hosts for photochromic guest molecules.
Auteurs : RBID : pubmed:23409796English descriptors
- KwdEn :
- MESH :
- chemical , chemical synthesis : Organometallic Compounds.
- chemical , chemistry : Aluminum, Azo Compounds, Gallium, Indium, Organometallic Compounds.
- Models, Molecular, Photochemical Processes.
Abstract
Several metal-organic framework compounds (MOF-5, MIL-68(Ga), MIL-68(In), MIL-53(Al)) were loaded with azobenzene (AZB), as confirmed by XRPD measurements and elemental analysis. By IR spectroscopy, it was shown that the light-induced trans/cis isomerization of AZB in these hybrid host-guest compounds is improved compared to that of solid AZB. A population of the excited cis state up to 30% has been obtained for AZB0.66@MIL-68(In). However, no light-induced trans/cis isomerization was observed for AZB0.5@MIL-53(Al). Structural models obtained from high-resolution synchrotron powder diffraction data show that AZB molecules are densely packed within the channels of MIL-53(Al) so that no trans/cis isomerization can occur. A different situation was observed for AZB in the larger channels of MIL-68(Ga). Thus, this investigation shows the influence of the host material on the switching behavior of the embedded AZB molecules.
DOI: 10.1021/ic302856b
PubMed: 23409796
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Metal-organic frameworks as hosts for photochromic guest molecules.</title><author><name sortKey="Hermann, D" uniqKey="Hermann D">D Hermann</name><affiliation wicri:level="3"><nlm:affiliation>Department of Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne</wicri:regionArea><placeName><region type="land" nuts="1">Rhénanie-du-Nord-Westphalie</region><region type="district" nuts="2">District de Cologne</region><settlement type="city">Cologne</settlement></placeName></affiliation></author><author><name sortKey="Emerich, H" uniqKey="Emerich H">H Emerich</name></author><author><name sortKey="Lepski, R" uniqKey="Lepski R">R Lepski</name></author><author><name sortKey="Schaniel, D" uniqKey="Schaniel D">D Schaniel</name></author><author><name sortKey="Ruschewitz, U" uniqKey="Ruschewitz U">U Ruschewitz</name></author></titleStmt><publicationStmt><date when="2013">2013</date><idno type="doi">10.1021/ic302856b</idno><idno type="RBID">pubmed:23409796</idno><idno type="pmid">23409796</idno><idno type="wicri:Area/Main/Corpus">000795</idno><idno type="wicri:Area/Main/Curation">000795</idno><idno type="wicri:Area/Main/Exploration">000555</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminum (chemistry)</term><term>Azo Compounds (chemistry)</term><term>Gallium (chemistry)</term><term>Indium (chemistry)</term><term>Models, Molecular</term><term>Organometallic Compounds (chemical synthesis)</term><term>Organometallic Compounds (chemistry)</term><term>Photochemical Processes</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemical synthesis" xml:lang="en"><term>Organometallic Compounds</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Aluminum</term><term>Azo Compounds</term><term>Gallium</term><term>Indium</term><term>Organometallic Compounds</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Models, Molecular</term><term>Photochemical Processes</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Several metal-organic framework compounds (MOF-5, MIL-68(Ga), MIL-68(In), MIL-53(Al)) were loaded with azobenzene (AZB), as confirmed by XRPD measurements and elemental analysis. By IR spectroscopy, it was shown that the light-induced trans/cis isomerization of AZB in these hybrid host-guest compounds is improved compared to that of solid AZB. A population of the excited cis state up to 30% has been obtained for AZB0.66@MIL-68(In). However, no light-induced trans/cis isomerization was observed for AZB0.5@MIL-53(Al). Structural models obtained from high-resolution synchrotron powder diffraction data show that AZB molecules are densely packed within the channels of MIL-53(Al) so that no trans/cis isomerization can occur. A different situation was observed for AZB in the larger channels of MIL-68(Ga). Thus, this investigation shows the influence of the host material on the switching behavior of the embedded AZB molecules.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">23409796</PMID><DateCreated><Year>2013</Year><Month>03</Month><Day>04</Day></DateCreated><DateCompleted><Year>2013</Year><Month>08</Month><Day>16</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1520-510X</ISSN><JournalIssue CitedMedium="Internet"><Volume>52</Volume><Issue>5</Issue><PubDate><Year>2013</Year><Month>Mar</Month><Day>4</Day></PubDate></JournalIssue><Title>Inorganic chemistry</Title><ISOAbbreviation>Inorg Chem</ISOAbbreviation></Journal><ArticleTitle>Metal-organic frameworks as hosts for photochromic guest molecules.</ArticleTitle><Pagination><MedlinePgn>2744-9</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/ic302856b</ELocationID><Abstract><AbstractText>Several metal-organic framework compounds (MOF-5, MIL-68(Ga), MIL-68(In), MIL-53(Al)) were loaded with azobenzene (AZB), as confirmed by XRPD measurements and elemental analysis. By IR spectroscopy, it was shown that the light-induced trans/cis isomerization of AZB in these hybrid host-guest compounds is improved compared to that of solid AZB. A population of the excited cis state up to 30% has been obtained for AZB0.66@MIL-68(In). However, no light-induced trans/cis isomerization was observed for AZB0.5@MIL-53(Al). Structural models obtained from high-resolution synchrotron powder diffraction data show that AZB molecules are densely packed within the channels of MIL-53(Al) so that no trans/cis isomerization can occur. A different situation was observed for AZB in the larger channels of MIL-68(Ga). Thus, this investigation shows the influence of the host material on the switching behavior of the embedded AZB molecules.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hermann</LastName><ForeName>D</ForeName><Initials>D</Initials><Affiliation>Department of Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany.</Affiliation></Author><Author ValidYN="Y"><LastName>Emerich</LastName><ForeName>H</ForeName><Initials>H</Initials></Author><Author ValidYN="Y"><LastName>Lepski</LastName><ForeName>R</ForeName><Initials>R</Initials></Author><Author ValidYN="Y"><LastName>Schaniel</LastName><ForeName>D</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Ruschewitz</LastName><ForeName>U</ForeName><Initials>U</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2013</Year><Month>02</Month><Day>14</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Inorg Chem</MedlineTA><NlmUniqueID>0366543</NlmUniqueID><ISSNLinking>0020-1669</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Azo Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Organometallic Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>045A6V3VFX</RegistryNumber><NameOfSubstance>Indium</NameOfSubstance></Chemical><Chemical><RegistryNumber>CH46OC8YV4</RegistryNumber><NameOfSubstance>Gallium</NameOfSubstance></Chemical><Chemical><RegistryNumber>CPD4NFA903</RegistryNumber><NameOfSubstance>Aluminum</NameOfSubstance></Chemical><Chemical><RegistryNumber>F0U1H6UG5C</RegistryNumber><NameOfSubstance>azobenzene</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Aluminum</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Azo Compounds</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Gallium</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Indium</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Models, Molecular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Organometallic Compounds</DescriptorName><QualifierName MajorTopicYN="N">chemical synthesis</QualifierName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Photochemical Processes</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2013</Year><Month>2</Month><Day>14</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>2</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>2</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2013</Year><Month>8</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1021/ic302856b</ArticleId><ArticleId IdType="pubmed">23409796</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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