Indeno[2,1-c]fluorene-based blue fluorescent oligomers and polymers: Synthesis, structure, photophysical and electroluminescence properties
作者:Bin Du、Lei Wang、Si-Chun Yuan、Ting Lei、Jian Pei、Yong Cao
DOI:10.1016/j.polymer.2013.03.044
日期:2013.5
solvents as well as facile film forming properties. In comparison with linear n-alkyl-substituted oligo(indeno[1,2-b]fluorene)s and poly(indeno[1,2-b]fluorene)s (2,8-PIFs), the absorption and emission features of twisted n-alkyl-substituted oligo(indeno[2,1-c]fluorene)s and poly(indeno[2,1-c]fluorene) (P1) in dilute solution exhibited a correlation to the conjugation length and obviously blue-shifted
茚并[2,1- c ]芴的烷基化骨架被认为是茚并[1,2- b ]芴的位置异构体,它通过Pd催化的Suzuki有机光耦合反应,构建了几种共轭的低聚物和聚合物。发光二极管。单晶分析表明,茚满[2,1- c ]芴的结构由于分子拥挤区域中的紧密H --- H接触而扭曲。P1-P3在常见的有机溶剂中显示出良好的溶解性,并且易于形成膜。与线性正烷基取代的低聚(茚并[1,2- b ]芴)和聚(茚并[1,2- b ]芴)(2,8-PIFs),稀溶液中扭曲的n-烷基取代的低聚(茚并[2,1- c ]芴)和聚(茚并[2,1- c ]芴)(P1)的吸收和发射特征与共轭长度,并且由于主链扭曲而明显蓝移。在稀释溶液和薄膜中,所有聚合物均发出强烈的蓝色荧光,其半峰宽(半峰宽)(约50 nm)非常窄。制作了具有ITO / PEDOT:PSS / PVK / polymers / Ba / Al构型的电致发光(EL)器件,以实现蓝色EL发射,在10