View : 11 Download: 0

Photoinduced energy and electron transfer in phenylethynyl-bridged zinc porphyrin-oligothienylenevinylene-C 60 ensembles

Title
Photoinduced energy and electron transfer in phenylethynyl-bridged zinc porphyrin-oligothienylenevinylene-C 60 ensembles
Authors
Urbani M.Ohkubo K.Islam D.M.S.Fukuzumi S.Langa F.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2012
Journal Title
Chemistry - A European Journal
ISSN
0947-6539JCR Link
Citation
vol. 18, no. 24, pp. 7473 - 7485
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Donor-bridge-acceptor triad (Por-2TV-C 60) and tetrad molecules ((Por) 2-2TV-C 60), which incorporated C 60 and one or two porphyrin molecules that were covalently linked through a phenylethynyl-oligothienylenevinylene bridge, were synthesized. Their photodynamics were investigated by fluorescence measurements, and by femto- and nanosecond laser flash photolysis. First, photoinduced energy transfer from the porphyrin to the C 60 moiety occurred rather than electron transfer, followed by electron transfer from the oligothienylenevinylene to the singlet excited state of the C 60 moiety to produce the radical cation of oligothienylenevinylene and the radical anion of C 60. Then, back-electron transfer occurred to afford the triplet excited state of the oligothienylenevinylene moiety rather than the ground state. Thus, the porphyrin units in (Por)-2TV-C 60 and (Por) 2-2TV-C 60 acted as efficient photosensitizers for the charge separation between oligothienylenevinylene and C 60. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
DOI
10.1002/chem.201102260
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE