α,β-Unsubstituted<i>meso</i>-positioning thienyl BODIPY: a promising electron deficient building block for the development of near infrared (NIR) p-type donor–acceptor (D–A) conjugated polymers

Abstract

Development of new ultra low bandgap (<italic>E</italic>optg &lt; 1 eV) π-conjugated D–A polymers consisting of α,β-unsubstituted<italic>meso</italic>-positioning thienyl BODIPY.