Circularly polarized luminescence from structurally coloured polymer films

Structurally coloured polymer films with circularly polarized luminescence (CPL) properties were prepared by the photopolymerization of cholesteric liquid crystal mixtures doped with aggregation-induced emission (AIE)-active tetraphenylethylene. The films show good CPL performance with the luminescence dissymmetry factor up to 0.58 and enhanced fluorescence efficiency. A strategy for the preparation of structurally coloured polymer films with strong circularly polarized luminescence and enhanced fluorescence efficiency based on cholesteric liquid crystals is presented for the first time.