新型染料敏化剂三苯基咪唑丙烯酸的合成及其光电性能

Synthesis and Optical Properties of a Novel Dye-sensitizer——Triphenyl Imidazole Acrylic Acid

以苯偶姻、苯甲醛和丙二酸为原料经3步反应合成了新型三苯基咪唑系染料敏化剂(TPIA),其结构经1H NMR,13C NMR,IR和MS表征,并分析了咪唑的环化反应机理。将TPIA用于染料敏化太阳能电池染料敏化剂,表明TPIA具有良好的光电转换性能,TPIA的乙醇饱和溶液吸附敏化光阳极24 h的DSSC光电转换效率为1.90%,填充因子为74.5%。

A novel dye-sensitizer,triphenyl imidazole acrylic acid（TPIA）,was synthesized by a three-step reaction using benzoin,benzaldehyde and malonic acid as the raw materials. The structure was characterized by1 H NMR,13 C NMR,IR and MS. The synthesis mechanism of imidazole ring was speculated. TPIA was used as the dye-sensitizer of dye sensitized solar cells,the cell performance was tested. The results showed that TPIA exhibited good optical performance. When the adsorption time soaked in TPIA＇s ethanol saturated solution was 24 h,the conversion efficiency and the fill factor were 1. 9% and 74. 5%,respectively.