Molecular tuning in highly fluorescent dithieno[3,2-b:2′,3′-d]pyrrole-based oligomers: effects of N-functionalization and terminal aryl unit
作者:Sean J. Evenson、Ted M. Pappenfus、M. Carmen Ruiz Delgado、Karla R. Radke-Wohlers、J. T. López Navarrete、Seth C. Rasmussen
DOI:10.1039/c2cp40161d
日期:——
series of eight conjugated oligomers consisting of central dithieno[3,2-b:2′,3′-d]pyrroles (DTPs) end-capped with either thienyl or phenyl groups have been prepared from N-alkyl-, N-aryl-, and N-acyl-dithieno[3,2-b:2′,3′-d]pyrroles via Stille and Suzuki cross-coupling. The DTP-based quaterthiophene, N-phenyl-2,6-bis(2-thienyl)dithieno-[3,2-b:2′,3′-d]pyrrole was characterized via X-ray crystallography and
由N-烷基-,N-芳基制备了一系列八个共轭低聚物,它们由被噻吩基或苯基封端的中心双噻吩并[3,2- b:2',3'- d ]吡咯(DTP)组成-和N-酰基-二硫代[3,2- b:2',3'- d ]吡咯通过Stille和Suzuki交叉偶联。基于DTP四噻吩,Ñ -苯基-2,6-双(2-噻吩基)dithieno-并[3,2- b:2',3'- d ]吡咯的特征在于通过X射线晶体学和发现正交空间群中结晶Pna2 1与一个= 10.8666(3)埃,b = 22.8858(6),C ^ = 7.4246(2)埃,ž = 4的全部低聚物系列被彻底调查通过进行光物理,电化学和DFT计算,以关联芳基端基和N-官能化对所得光学和电子性质的累积影响。通过这种分子调节,发现可以将HOMO能量调节高达0.32V,并且可以产生具有高达92%的溶液荧光效率的高度荧光的低聚物。