Fluorophore(s) appended fullerene dyads and triads for probing photoinduced energy transfer: syntheses, electronic structure, and fluorescence studies

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Authors
Deviprasad, Gollapalli R.
Smith, Phillip M.
Zandler, Melvin E.
Rogers, Lisa M.
D'Souza, Francis
Advisors
Issue Date
2006-01-01
Type
Article
Keywords
Research Support, N.I.H., Extramural
Research Projects
Organizational Units
Journal Issue
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.
PubMed ID
DOI
ISSN
0166-8595
EISSN