Facile synthesis and characterization of well-defined soluble poly(benzimidazobenzophenanthroline)-like derivatives†‡
Abstract
A simple and efficient route to the synthesis of soluble BBL-like compounds is developed. All of the compounds have good solubility in common organic solvents and large electron affinity (3.8–4.0 eV), comparable to those of BBL and PCBM. Perylene-based BBL derivatives more readily aggregate and show broad absorption.