Functionalized isothianaphthene monomers that promote quinoidal character in donor–acceptor copolymers for organic photovoltaics

JD Douglas, G Griffini, TW Holcombe, EP Young…

Index: Douglas, Jessica D.; Griffini, Gianmarco; Holcombe, Thomas W.; Young, Eric P.; Lee, Olivia P.; Chen, Mark S.; Frechet, Jean M. J. Macromolecules, 2012 , vol. 45, # 10 p. 4069 - 4074

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Citation Number: 25

Abstract

A series of low band gap isothianaphthene-based (ITN) polymers with various electron- withdrawing substituents and intrinsic quinoidal character were synthesized, characterized, and tested in organic photovoltaic (OPV) devices. The three investigated ITN cores contained either ester, imide, or nitrile functionalities and were each synthesized in only four linear steps. The relative electron-withdrawing strength of the three substituents on the ITN ...