Surface characterization and liquid crystal alignment behavior of comb-like poly(oxyethylene)/poly(3-hexylthiophene) blend films

► Surface properties of comb-like polymer/polythiophene blends were investigated. ► LC alignment behavior of the blend films was correlated with the surface properties. ► Surface energy or contact angle is not suitable to explain the LC alignment behavior. ► The comb-like polymer part on the blend films predominantly affects the LC alignment.