Imahori Hiroshi, Liu Jia-Cheng, Hotta Hiroki, Kira Aiko, Umeyama Tomokazu, Matano Yoshihiro, Li Guifeng, Ye Shen, Isosomppi Marja, Tkachenko Nikolai V, Lemmetyinen Helge
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
J Phys Chem B. 2005 Oct 6;109(39):18465-74. doi: 10.1021/jp0537409.
Hydrogen bonding effects on surface structure, photophysical properties, and photoelectrochemistry have been examined in a mixed film of porphyrin and fullerene composites with and without hydrogen bonding on indium tin oxide and nanostructured SnO2 electrodes. The nanostructured SnO2 electrodes modified with the mixed films of porphyrin and fullerene composites with hydrogen bonding exhibited efficient photocurrent generation compared to the reference systems without hydrogen bonding. Atomic force microscopy, infrared reflection absorption, and ultraviolet-visible absorption spectroscopies and time-resolved fluorescence lifetime and transient absorption spectroscopic measurements disclosed the relationship between the surface structure and photophysical and photoelectrochemical properties relating to the formation of hydrogen bonding between the porphyrins and/or the C60 moieties in the films on the electrode surface. These results show that hydrogen bonding is a highly promising methodology for the fabrication of donor and acceptor composites on nanostructured semiconducting electrodes, which exhibit high photoelectrochemical properties.
在氧化铟锡和纳米结构的二氧化锡电极上，研究了氢键对卟啉与富勒烯复合材料混合膜表面结构、光物理性质及光电化学的影响，该混合膜存在或不存在氢键。与无氢键的参比体系相比，由存在氢键的卟啉与富勒烯复合材料混合膜修饰的纳米结构二氧化锡电极表现出高效的光电流产生。原子力显微镜、红外反射吸收、紫外可见吸收光谱以及时间分辨荧光寿命和瞬态吸收光谱测量揭示了电极表面膜中卟啉和/或C60部分之间氢键形成所涉及的表面结构与光物理及光电化学性质之间的关系。这些结果表明，氢键是在纳米结构半导体电极上制备具有高光电化学性质的供体和受体复合材料的极具前景的方法。
