Cho Youn-Jaung, Ahn Tae Kyu, Song Hyunjoon, Kim Kil Suk, Lee Chang Yeon, Seo Won Seok, Lee Kwangyeol, Kim Seong Keun, Kim Dongho, Park Joon T
National Research Laboratory, Department of Chemistry and School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.
J Am Chem Soc. 2005 Mar 2;127(8):2380-1. doi: 10.1021/ja044847x.
A self-assembled monolayer (SAM) of a C60-triosmium cluster complex Os3(CO)7(CNR)(CNR')(mu3-eta2:eta2:eta2-C60) (ZnP-C60; R = (CH2)3Si(OEt)3, R' = ZnP) on an ITO surface exhibits ideal electrochemical responses as well as remarkable enhancement of the photocurrent generation. The diazabicyclooctane (DABCO) binding (ZnP)-C60/ITO/AsA/Pt cell shows the highest photocurrent generation quantum yield (19.5%) ever reported for the molecular photovoltaic cells based on the covalently linked donor-acceptor dyad structures. The high efficiency in photocurrent generation is ascribed to an efficient electron transfer from photoexcited porphyrin to fullerene, revealed by fluorescence lifetime measurements and transient absorption decay profiles. These results provide valuable information on the new strategy for the construction of molecular photonic devices and artificial photosynthetic systems on ITO electrodes.
一种C60-三锇簇配合物Os3(CO)7(CNR)(CNR')(μ3-η2:η2:η2-C60)（ZnP-C60；R = (CH2)3Si(OEt)3，R' = ZnP）在ITO表面的自组装单分子层（SAM）表现出理想的电化学响应以及光电流产生的显著增强。二氮杂双环辛烷（DABCO）结合的(ZnP)-C60/ITO/AsA/Pt电池显示出基于共价连接的供体-受体二元结构的分子光伏电池迄今报道的最高光电流产生量子产率（19.5%）。光电流产生的高效率归因于从光激发的卟啉到富勒烯的有效电子转移，这通过荧光寿命测量和瞬态吸收衰减曲线得以揭示。这些结果为在ITO电极上构建分子光子器件和人工光合系统的新策略提供了有价值的信息。
