Structure and Photovoltaic Properties of (<i>E</i>)-2-Cyano-3-[4-(diphenylamino)phenyl]acrylic Acid Substituted by<i>tert</i>-Butyl Groups
作者:Katsuhiko Ono、Tomoya Yamaguchi、Masaaki Tomura
DOI:10.1246/cl.2010.864
日期:2010.8.5
(E)-3-4-[Bis(4-tert-butylphenyl)amino]phenyl}-2-cyanoacrylic acid and its related compounds were synthesized by the Knoevenagel condensation of the corresponding 4-aminobenzaldehydes with cyanoacetic acid. Cyclic voltammetry measurements showed that these organic dyes exhibited reversible oxidation waves. The tert-butyl substituents also decreased molecular stacking in the crystals, thus affecting the photovoltaic properties of the dyes. A solar cell using the tert-butyl-substituted dye exhibited higher performance than that for the analog without tert-butyl group substitution.
(E)-3-4-[双(4-叔丁基苯基)氨基]苯基}-2-氰基丙烯酸及其相关化合物是通过相应的4-氨基苯甲醛与氰基乙酸的Knoevenagel缩合反应合成的。循环伏安法测量表明,这些有机染料表现出可逆的氧化波。叔丁基取代基还降低了晶体中的分子堆叠,从而影响了染料的光电性能。使用叔丁基取代染料的太阳能电池表现出比没有叔丁基取代的类似物更高的性能。