文献类型：期刊文献

英文题名：Synthesis of novel cyanine-fullerene dyads for photovoltaic devices

作者：Meng, Fanshun[1]; Hua, Jianli[1]; Chen, Kongchang[1]; Tian, He[1]; Zuppiroli, Libero[2]; Nüesch, Frank[3]

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Inst Mat, CH-1015 Lausanne, Switzerland;[4]EMPA, Swiss Fed Labs Mat Testing & Res, Lab Funct Polymers, CH-8600 Dubendorf, Switzerland

年份：2005

卷号：15

期号：9

起止页码：979

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY

收录：;EI(收录号：2005139016022);WOS:【SCI-EXPANDED(收录号:WOS:000227139100008)】；

语种：英文

外文关键词：Electrochemistry - Electron transitions - Fluorescence - Fullerenes - Irradiation - Photovoltaic effects - Quenching - Redox reactions - Synthesis (chemical)

摘要：Two novel cyanine-fullerene dyads have been synthesized by means of the Prato reaction from the corresponding cyanine-aldehyde, N-methylglycine and C-60. As well as a thorough characterization using MS-TOF, H-1-NMR, C-13-NMR and elemental analysis, the optical and electrochemical properties of these two dyads were investigated. The fluorescence of the cyanine fullerene dyads was quenched efficiently as compared to the pristine cyanine, which we have attributed to photo-induced electron transfer from the cyanine to C-60. The redox potentials obtained by cyclic voltammetry provide evidence that this electron transfer is energetically favorable. Single and double layer photovoltaic devices were fabricated to evaluate the photovoltaic properties of the dyad. The energetic conversion efficiency of the double layer device exceeds 0.1% under 3.1 mW cm(-2) white light irradiation. The results show that cyanine-fullerene dyads are promising materials for photovoltaic devices.