Synthesis of new intramolecular charge transfer A–D–A tetrathiafulvalene-fused triads exhibiting large solvent sensitive emission behavior
作者:Ramababu Bolligarla、Samar K. Das
DOI:10.1016/j.tetlet.2011.03.016
日期:2011.5
We have synthesized three new acceptor–donor–acceptor (A–D–A) triads incorporating the donor tetrathiafulvalene (TTF) fused with acceptors quinoxaline and dipyrido[3,2-a:2′,3′-c]phenazine (dppz) systems. Solution emission spectral studies of all these compounds show large solvent sensitive behavior with huge Stokes shifts. The large solvent dependence of the emission indicates that the excited state
我们已经合成了三个新的受体-供体-受体(AD)三元组,其结合了供体四硫富瓦烯(TTF)与受体喹喔啉和双嘧啶[3,2- a:2',3'- c ]吩嗪(dppz)融合系统。所有这些化合物的溶液发射光谱研究均显示出较大的斯托克斯位移对溶剂的敏感行为。发射的大溶剂依赖性表明,由于分子内电荷转移,激发态在极性更大的溶剂中稳定。我们还描述了一种标题化合物(化合物1b)的电化学研究,该化合物在1.02和1.31 V下相对于Ag / AgCl表现出两种氧化反应,分别对应于TTF单阳离子和离子的氧化物种。