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À propos de : Efficient Light Harvesting and Energy Transfer in Organic−Inorganic HybridMultichromophoric Materials        

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  • Efficient Light Harvesting and Energy Transfer in Organic−Inorganic HybridMultichromophoric Materials
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  • Thin films of silica hybrid materials consisting of two to three covalently bound organic chromophores atdifferent ratios were conveniently synthesized and fabricated. The photophysical properties of these materialshave 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 increasingthe molar fraction of donor chromophore. In a three-chromophore system, the energy is transferred from 300to 530 nm successfully. Time-resolved fluorescence experiments are employed to elucidate the average ratesand efficiencies (84−97%) of energy transfer in these organic/inorganic hybrid systems. The hybrid materialshave been shown to provide antenna effect to facilitate energy transfer and light harvesting.
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