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.