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    題名: Combining Light Harvesting and Electron Transfer in Silica-Titania-Based Organic-Inorganic Hybrid Materials
    作者: Lin, Cheng-lan;Chen, Chih-hsien;Lim, Tsong-shin;Fann, Wunshain;Luh, Tien-yau
    貢獻者: 淡江大學化學工程與材料工程學系
    關鍵詞: Electron transfer;FRET (fluorescence resonant energy transfer);Hybrid materials;Silica;Titania
    日期: 2008-03-01
    上傳時間: 2011-05-20 09:56:32 (UTC+8)
    出版者: Wiley
    摘要: A convenient protocol to fabricate an organic–inorganic hybrid system with covalently bound light-harvesting chromophores (stilbene and terphenylene–divinylene) and an electron acceptor (titanium oxide) is described. Efficient energy- and electron-transfer processes may take place in these systems. Covalent bonding between the acceptor chromophores and the titania/silica matrix would be important for electron transfer, whereas fluorescence resonant energy transfer (FRET) would strongly depend on the ratio of donor to acceptor chromophores. Time-resolved spectroscopy was employed to elucidate the detailed photophysical processes. The coupling of FRET and electron transfer was shown to work coherently to lead to photocurrent enhancement. The photocurrent responses reached a maximum when the hybrid-material thin film contained 60 % acceptor and 40 % donor.
    關聯: Chemistry-An Asian Journal 3(3), pp.578-584
    DOI: 10.1002/asia.200700368
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

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