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合成了2个新的含1,3,4-噁二唑官能团的联吡啶配体及其相应的钌髤配合物Ru(CPOD)(dcbpy)(NCS)2(Ru-1)和Ru(DPOD)(dcbpy)(NCS)2(Ru-2)(CPOD=4-羧基-4′-[2-(4-壬氧基苯基)-5-苯基-1,3,4-噁二唑]-2,2′-二联吡啶,DPOD=4,4′-二[2-(4-壬氧基苯基)-5-苯基-1,3,4-噁二唑]-2,2′-二联吡啶,dcbpy=4,4′-二羧基-2,2′-二联吡啶),并通过红外光谱、循环伏安、紫外可见吸收光谱、元素分析和光电流-光电压曲线实验对其结构和光电转化性质进行了表征。这些配合物的最大MLCT态吸收位于555nm,摩尔消光系数可达1.43×104L·mol-1·cm-1。它们的光化学和电化学性质表明:激发态能级与TiO2导带底能级匹配,电子能够注入到TiO2导带中。将它们敏化到纳米晶TiO2电极上,光电转化效率为2.4%。
Two novel bipyridyl ligands containing 1,3,4-oxadiazole functional groups and their corresponding complexes Ru (CPOD) (dcbpy) (NCS) 2 (Ru-DP) and Ru ) (dcbpy) (NCS) 2 (Ru-2) (CPOD = 4-carboxy- 4’- [2- (4- nonyloxyphenyl) -5-phenyl- 1,3,4- oxadiazole ] -2,2’-bipyridine, DPOD = 4,4’-bis [2- (4-nonyloxyphenyl) -5-phenyl-1,3,4-oxadiazole] Bipyridine, dcbpy = 4,4’-dicarboxy-2,2’-bipyridine) were synthesized and characterized by IR, cyclic voltammetry, UV-Vis absorption spectra, elemental analysis and photocurrent- Its structure and photoelectric conversion properties were characterized. The maximum MLCT absorption of these complexes is located at 555 nm with a molar extinction coefficient of 1.43 × 104 L · mol-1 · cm-1. Their photochemical and electrochemical properties indicate that the excited state energy level matches the bottom level of the conduction band of TiO2 and electrons can be implanted into the conduction band of TiO2. They are sensitized to nanocrystalline TiO2 electrode, photoelectric conversion efficiency of 2.4%.