Zou Xu, Fan Ya, Zhuang Ming-Yang, Peng Jing, Wang Ke-Zhi
College of Chemistry, Beijing Normal University, Beijing 100875, China.
J Nanosci Nanotechnol. 2010 Mar;10(3):2203-7. doi: 10.1166/jnn.2010.2136.
An electrostatic self-assembled film based on a tungstic acid colloidal solution and a dinuclear Ru(II) complex (bpy)2Ru(bpbh)Ru(bpy)24 [where bpy = 2,2'-bipyrizine and bpbh = 1,6-bis-(2-(2-pyridyl)benzimidazoyl)hexane] has been prepared and characterized by means of ultraviolet-visible absorption and emission spectroscopy and cyclic voltammetry. The photoelectrochemical properties of the films have also been studied. A large anodic photocurrent of 0.8 microA/cm2 was observed when a monolayer film of ITO/WO3/the Ru complex was irradiated with polychromatic light (730 nm > lambda > 325 nm) at a positive applied potential of 0.6 V versus a saturated calomel electrode, four-fold that observed under the same experimental condition for the ITO electrode covered with only a monolayer of WO3 without the Ru(II) complex, indicating that the the anodic photocurrent mainly arose from the electron injection from the photoexcited Ru(II) complex to the conduction band of WO3.
基于钨酸胶体溶液和双核钌（II）配合物（bpy）2Ru（bpbh）Ru（bpy）24[其中bpy = 2,2'-联吡啶嗪，bpbh = 1,6-双-(2-(2-吡啶基)苯并咪唑基)己烷]制备了一种静电自组装膜，并通过紫外可见吸收和发射光谱以及循环伏安法对其进行了表征。还研究了该膜的光电化学性质。当ITO/WO3/钌配合物单层膜在相对于饱和甘汞电极0.6 V的正施加电位下用多色光（730 nm＞λ＞325 nm）照射时，观察到0.8 μA/cm2的大阳极光电流，这是在相同实验条件下仅覆盖单层WO3而没有钌（II）配合物的ITO电极所观察到的光电流的四倍，表明阳极光电流主要源于光激发的钌（II）配合物向WO3导带的电子注入。
