Synthesis and Characterization of Optical and Redox Properties of Bithiophene-Functionalized Diketopyrrolopyrrole Chromophores
作者:Hannah Bürckstümmer、Annike Weissenstein、David Bialas、Frank Würthner
DOI:10.1021/jo2003117
日期:2011.4.15
high yields, and these are shown to be versatile building blocks for the synthesis of DPP-based molecular materials by Negishi, Stille, and Suzuki coupling. The influence of the peripheral substituents on the optical and electrochemical properties of the present series of DPP dyes 7a−f were investigated by UV/vis and steady-state fluorescence spectroscopy and cyclic voltammetry, revealing an appreciable
通过钯催化的交叉偶联反应,合成了一系列六种新的2,2'-联噻吩官能化的二酮吡咯并吡咯(DPP)染料7a - f,它们在噻吩单元的末端带有不同的供电子和吸电子取代基。迄今为止,未知的二碘化DPP 2和相应的硼酸酯衍生物3可以高产率地制备,并且显示出它们是通过Negishi,Stille和Suzuki偶联合成基于DPP的分子材料的通用结构单元。外围取代基对本系列DPP染料7a - f的光学和电化学性质的影响通过紫外/可见光,稳态荧光光谱和循环伏安法进行了研究,结果表明这些染料的电子性质具有明显的影响。二氨基取代的DPP衍生物7e表现出在近红外(NIR)区域中达到的强吸收带,这是用于有机光伏中的高度期望的特征。