Efficient light harvesting and energy transfer in organic-inorganic hybrid multichromophoric materials.
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.
Chen
Chih-Hsien
CH
Department of Chemistry and Institute of Polymer Science & Engineering, National Taiwan University, Taipei, Taiwan 106.
Liu
Ken-Yen
KY
Sudhakar
Sundarraj
S
Lim
Tsong-Shin
TS
Fann
Wunshain
W
Hsu
Chao-Ping
CP
Luh
Tien-Yau
TY
D004735:Energy Transfer; D007287:Inorganic Chemicals / Q000737:chemistry*; D008027:Light; D008958:Models, Molecular; D008968:Molecular Conformation; D009930:Organic Chemicals / Q000737:chemistry*; D013053:Spectrophotometry
D007287:Inorganic Chemicals; D009930:Organic Chemicals