Effect of Bulky Atom Substitution on Backbone Coplanarity and Electrical Properties of Cyclopentadithiophene-Based Semiconducting Polymers

Front Cover: In article number 2100709 by Byoung Hoon Lee and co-workers, the effect of chlorine atom substitution on the optoelectronic properties of cyclopentadithiophene-based donor–acceptor π-conjugated polymers is investigated. The chlorine atom substitution leads to deteriorated optical and electrical properties of the polymer due to chain distortion as a consequence of steric hindrance adjacent to the chlorine atoms.