Boronate ester post-functionalization of PPEs: versatile building blocks for poly(2,2′-(1-(4-(1,2-di(thiophen-2-yl)vinyl)phenyl)-2-(2,5-dioctylphenyl)ethene-1,2-diyl)dithiophene) and application in field effect transistors

Abstract

A convenient and scalable strategy for post-functionalization of poly(phenylene-ethynylene)s and phenylene-ethynylene arrays from boronate ester derivatives using the thienyl group as an example. Furthermore, poly(2,2′-(1-(4-(1,2-di(thiophen-2-yl)vinyl)phenyl)-2-(2,5-dioctylphenyl)ethene-1,2-diyl)dithiophene) showed good field-effect transistor performance with an excellent mobility up to 0.723 cm² V⁻¹ s⁻¹ and an on–off ratio of 10⁴.