Novel glassy liquid crystals possessing elevated phase transition temperatures and excellent morphological stability have been developed for photonic applications. The concepts of high-performance circular polarizers, optical notch filters and reflectors with a tunable spectral range have been demonstrated with glassy cholesterics. The design principle governing glassy liquid crystals has been generalized to photoresponsive systems containing diarylethene moieties for reversible tunability of reflective coloration with superior thermal stability and fatigue resistance.
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