An innovative approach to producing reflective systems is presented by using Reactive Mesogen based Cholesteric Particles (ChRMPs). The versatility of the novel ChRMPs opens the door to produce single-or multi-wavelength reflective systems by mixing particles with Bragg reflection located at different wavelength values. Particulate based films can be prepared in absence of any alignment layer on any kind of substrate with very wide viewing angle behaviour, which is in clear contrast to conventional reflective films based on cholesteric liquid crystals with planar alignment. The straightforward film preparation, flexibility of the synthesis and the excellent viewing-angle property make ChRMPs a very interesting new approach to produce reflective films for applications including, but not limited to, flat panel display such as in brightness enhancement or colour filters.
Cholesteric RMPPlanar film REFLECTIO N ʎon-axis ˃ ʎoff-axis ʎon-axis = ʎoff-axis Novel approach to producing cholesteric mono-or multi-wavelength reflective systems which drive the reflection by mixing isolated Bragg-reflectors is presented.
The flexibility of the additional sidechains of 4TICO allows the material to reorganise itself upon annealing, leading to higher solar cell performance.
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