Controlling the Surface Organization of Conjugated Donor-Acceptor Polymers by their Aggregation in Solution.

Li, Mengmeng; An, Cunbin; Marszalek, Tomasz; Baumgarten, Martin; Yan, He; Müllen, Klaus; Pisula, Wojciech · Adv Mater · 2016

basic_science · Level V

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Abstract

The aggregation of conjugated polymers is found to have a significant influence on the surface organization of deposited films. Difluorobenzothiadiazole-based polymers show a strong pre-aggregation in solution, but the addition of 1,2,4-trichlorobenzene efficiently reduces such aggregates, leading to the transition of the surface organization from edge- to face-on orientation in deposited films.