Efficient Light Harvesting and Energy Transfer in Organic?Inorganic Hybrid Multichromophoric Materials
Resource
Journal of Physical Chemistry B 109 (38): 17887-17891
Journal
Journal of Physical Chemistry B
Journal Volume
109
Journal Issue
38
Pages
17887-17891
Date Issued
2005
Date
2005
Author(s)
Chen, Chih-Hsien
Liu, Ken-Yen
Sudhakar, Sundarraj
Lim, Tsong-Shin
Fann, Wunshain
Hsu, Chao-Ping
Abstract
Thin films of silica hybrid materials consisting of two to three covalently bound organic chromophores at different ratios were conveniently synthesized and fabricated. The photophysical properties of these materials have been studied. The fluorescence spectra reveal complete fluorescence resonance energy transfer (FRET) from donor to acceptor, and the light-harvesting ability of these hybrid materials increases with increasing the molar fraction of donor chromophore. In a three-chromophore system, the energy is transferred from 300 to 530 nm successfully. Time-resolved fluorescence experiments are employed to elucidate the average rates and efficiencies (84-97%) of energy transfer in these organic/inorganic hybrid systems. The hybrid materials have been shown to provide antenna effect to facilitate energy transfer and light harvesting.
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Type
journal article
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