Highly polarized luminescence from oriented conjugated polymer/polyethylene blend films

Abstract

Polarized photoluminescence (PL) from conjugated polymers has, in the past, attracted less attention than polarized electroluminescence (EL), despite possible applications in liquid crystal displays. A systematic investigation is presented of the structure–property relationships in oriented films of blends of different poly(2,5‐dialkoxy‐ p ‐phenyleneethynylene)s with ultrahigh molecular weight polythylene, which exhibit highly polarized PL following gel processing and tensile deformation. Based on the experimental results, a new model is suggested for what occurs during orientation of the blends.