Synthesis, characterization, thermal, and optical properties of conjugated copolymers derived from phenanthrene-9,10-dione- and dibenzo[f,h]quinoxaline

Donor-acceptor (D-A) conjugated polymers bearing phenanthrene-9,10-dione and dibenzo[f,h]quinoxaline as the acceptor units were synthesized via an optimized Suzuki cross-coupling reaction. Each of the aforementioned acceptors was reacted with three different donor comonomers, namely, fluorene, carbazole, and silafluorene derivatives, bearing long alkyl chains. The resulting copolymers display excellent solubility in common organic solvents with high chemical stability, allowing for the determination of their structural, thermal, and optical properties by various analytical techniques. (C) 2018 Elsevier Ltd. All rights reserved.