Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/839
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSuneesh, C V-
dc.contributor.authorGopidas, K R-
dc.date.accessioned2013-11-26T05:05:53Z-
dc.date.available2013-11-26T05:05:53Z-
dc.date.issued2009-
dc.identifier.citationJournal of Physical Chemistry C 113(4):1606-1614;29 Jan 2009en_US
dc.identifier.issn1932-7447-
dc.identifier.urihttp://ir.niist.res.in:8080/jspui/handle/123456789/839-
dc.description.abstractPhotoinduced electron transfer in linked donor-acceptor dyads with bis(phenylethynyl)anthracene as light absorber and acceptor and one or two phenothiazine units as donors was investigated. Absorption spectra of the dyads can be obtained by adding contributions due to the donor and acceptor moieties indicating that the constituents do not interact in the ground state. Fluorescence of bis(phenylethynyl)anthraccne core was efficiently quenched by the donor moieties, and this was attributed to electron transfer from the phenothiazine to bis(phenylethynyl)anthracene. Ferntosecond transient absorption studies suggested formation of a charge separated state directly from the singlet excited-state of bis(phenylethynyl)anthracene. Nanosecond flash photolysis experiments gave long-lived transient absorptions assignable to the phenothiazine radical cation and bis(phenylethynyl)anthracene radical anion. These assignments were confirmed by oxygen quenching studies and secondary electron transfer experiments. Electron transfer in these systems is analyzed in the light of Marcus theory, and the slow back electron transfer exhibited is attributed to inverted region effectsen_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.subjectElectron transfer reactionsen_US
dc.subjectBridge acceptor systemsen_US
dc.subjectPhotoelectrochemical reactionsen_US
dc.subjectSupramolecular systemsen_US
dc.subjectEnergy transferen_US
dc.subjectSolar energyen_US
dc.titleLong-lived photoinduced charge separation in flexible 9,10-Bis(phenylethynyl)anthracene-phenothiazine dyadsen_US
dc.typeArticleen_US
Appears in Collections:2009

Files in This Item:
File Description SizeFormat 
2009 _ 00081.pdf
  Restricted Access
1.42 MBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.