Fluorophore(s) appended fullerene dyads and triads for probing photoinduced energy transfer: syntheses, electronic structure, and fluorescence studies
Deviprasad, Gollapalli R. Smith, Phillip M. Zandler, Melvin E. Rogers, Lisa M. D'Souza, Francis
Deviprasad, Gollapalli R.
Smith, Phillip M.
Zandler, Melvin E.
Rogers, Lisa M.
D'Souza, Francis
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Issue Date
2006-01-01
Type
Article
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Research Support, N.I.H., Extramural
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Citation
Photosynthesis research. 2006 Jan; 87(1): 105-14.
Abstract
Fullerene, C(60) was functionalized to possess one or two fluorophore entities. The fluorophore-fullerene dyads thus synthesized contain either a naphthalene, pyrene, or fluorene entity while the triads contain either a pyrene or fluorene entity in addition to a naphthalene entity. The redox behavior of these dyads and triads were probed by cyclic voltammetric technique, while the geometry and electronic structures were deduced from ab initio B3LYP/3-21G(*) method. Steady-state emission studies revealed the occurrence of energy transfer from the singlet excited fluorophore to the fullerene entity in the case of the dyads while the occurrence of step-by-step sequential energy transfer is envisioned in the case of the triads. A better 'antenna-effect' owing to the extended range of excitation wavelength to induce energy transfer to the appended fullerene has been achieved in the case of the triads.
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Publisher
Springer
Journal
Book Title
Series
Photosynthesis research
Photosyn. Res.
Photosyn. Res.
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NLM
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DOI
ISSN
0166-8595