通过水热方法合成了6种Co(Ⅱ/Ⅲ)配合物Co(H2O)6·H2btec(1); {［Co2(HCOO)6］·CH3OH}n(2); {［Co(4,4’-bipy)2(H2O)4］·suc·4H2O}n(3); Co(NA)2(H2O)4(4); ［Co(mal)(4,4’-bipy)H2O］n(5); ［Co(HCOO)4Co(H2O)4］n(6) (H4btec=均苯四甲酸, H2suc=丁二酸, HNA=烟酸, H2mal=丙二酸, bipy=联吡啶)}, 测试了配合物的UV-Vis吸收光谱和表面光电压光谱(SPS), 并通过X-ray单晶衍射确定了配合物的结构。 它们的表面光电压光谱在300～800 nm范围内均表现出正的光伏响应, 并将其与UV-Vis吸收光谱进行了分析和对比, 发现SPS中表面光伏响应带与UV-Vis吸收光谱的吸收峰具有良好的对应关系。 通过对比6种配合物的SPS可以看出, 中心金属离子的价态、 配位模式及配位微环境均对SPS响应带的位置和形状有一定影响。

Six cobalt complexes, Co(H2O)6·H2btec(1); {［Co2(HCOO)6］·CH3OH}n(2); {［Co(4,4’-bipy)2(H2O)4］·suc·4H2O}n(3); Co(NA)2(H2O)4(4); ［Co(mal)(4,4’-bipy)H2O］n(5) and ［Co(HCOO)4Co(H2O)4］n(6), were synthesized through hydrothermal method. UV-Vis absorption spectra and surface photovoltage spectra of the complexes were detected and the structures of the complexes were determined by single-crystal X-ray diffraction. There are positive responses in the range of 300-800 nm in the SPS. There are good corresponding relationships between response bands of SPS and absorption peaks of UV-Vis absorption spectra by the comparison. Comparing the SPS of six complexes, the valence, coordination mode and coordination micro-environment affect the position and the shape of the response bands.