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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 Fukuzumi
- Issue Date
- 2012
- Journal Title
- Chemistry - A European Journal
- ISSN
- 0947-6539
- Citation
- Chemistry - A European Journal vol. 18, no. 24, pp. 7473 - 7485
- Indexed
- SCI; SCIE; SCOPUS
- Document Type
- Article
- 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
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