Synthesis and electronic structure of 1,2-heteroarylethynes: Potential monomers for low bandgap conductive polymers
作者:S.C Ng、I Novak、L Wang、H.H Huang、W Huang
DOI:10.1016/s0040-4020(97)00870-3
日期:1997.9
A series of 1,2-heteroarylethynes which are potential monomers to low bandgap materials were synthesized and their He I photoelectron spectra measured and assigned with the aid of empirical arguments and semi-empirical MO calculations. The electronic structure analysis reveals that C equivalent to C bond is an efficient ''relay'' of pi-electrons and that it supports inter-ring conjugation. The efficiency depends on the nature of ring heteroatom, but not on its position within the ring. The importance of C equivalent to C bond relay is discussed in the broader context of conjugated polymer applications. (C) 1997 Published by Elsevier Science Ltd.