An efficient method for the synthesis of a multifunctional dye conjugate containing an electrooptical merocyanine chromophore and a photoconducting triphenylamine electrophore is described. In the first step 4,4′-di(9-carbazolyl)-substituted 4′′-hydroxytriphenylamine 7 is reacted with 2,3-dihydro-5H-oxazolo[3,2-a]pyrid-5-one (6) by dihydrooxazole ring opening leading to precursor 8 which could be converted to the bichromophoric conjugate 2 in a Knoevenagel condensation. UV/VIS spectroscopy and cyclic voltammetry of the bichromophoric compound 2 revealed optical and electrical properties that make such multifunctional dye conjugates highly promising for photorefractive applications.
描述了一种合成包含电光部
花青发色团和光导
三苯胺电泳团的多功能
染料缀合物的有效方法。在第一步中,4,4'-二(9-
咔唑基)-取代的4''-羟基
三苯胺7与2,3-二氢-5H-
恶唑并[3,2-a]
吡啶-5-酮反应(6)通过二氢
恶唑开环产生前体8,其可以在Knoevenagel缩合中转化为双发色团缀合物2。双发色化合物 2 的紫外/可见光谱和循环伏安法揭示了光学和电学特性,使得这种多功能
染料缀合物在光折变应用中极具前景。