Synthesis and Investigation of Solar-Cell Photosensitizers Having a Fluorazone Backbone
作者:Béla Mátravölgyi、Tamás Hergert、Angelika Thurner、Bálint Varga、Nicola Sangiorgi、Riccardo Bendoni、Lorenzo Zani、Gianna Reginato、Massimo Calamante、Adalgisa Sinicropi、Alessandra Sanson、Ferenc Faigl、Alessandro Mordini
DOI:10.1002/ejoc.201601622
日期:2017.4.10
fully conjugated, 2,7-disubstituted fluorazone (9H-pyrrolo[1,2-a]indol-9-one) derivatives was developed, comprising Elming-Clauson-Kaas type pyrrole formation, POCl3-mediated ring closure, selective halogenation and elongation of the conjugate backbone via cross-coupling reactions. As a proof of principle, such methodology was used to prepare for the first time two organic D-π-A dyes containing the fluorazone
开发了用于制备完全共轭的 2,7-二取代氟腙(9H-吡咯并[1,2-a]indol-9-one)衍生物的合成序列,包括 Elming-Clauson-Kaas 型吡咯形成,POCl3 介导通过交叉偶联反应实现共轭主链的闭环、选择性卤化和延伸。作为原理证明,这种方法首次用于制备两种含有氟腙部分的有机 D-π-A 染料。当吸附在纳米晶 TiO2 上时,新化合物显示出广泛的可见光吸收,并且电化学特性与它们在染料敏化太阳能电池中用作光敏剂相兼容。用氟腙染料制造的小型光伏器件产生的功率转换效率在 2.1-2.4% 范围内,相当于大约