摘要
Nature Photonics 16,226–234(2022)https://doi.org/10.1038/s41566-022-00957-5 Advanced Materials 34,2110170(2022)https://doi.org/10.1002/adma.202110170 Due to the lack of appropriate reversible photoswitches,efficiently remote photoprogramming of self-organized soft helical superstructures represents a formidable challenge in particularly allowing multiple stable states,tuning over a broad spectral range and establishing coupling balance between photonic resonance and transmission.The team of Weihong Zhu,Zhigang Zheng and Ben Feringa brings forth a series of exciting light-switchable intrinsic chiral diarylethenes with extremely large helical twisting power(HTP)to enable the dynamic,helical,and optical microstructure manipulation of liquid crystals(LCs),unprecedentedly achieving controllable,selectable,and extractable multi-stable reflection states,meanwhile avoiding the inherent orientation disorderliness of LCs caused by multiple chiral sources.A cutting-edge multiple anticounterfeiting technique,featuring color-tunability,erasability,reversibility,multi-stability and viewing-angle dependency of pre-recorded patterns,has been well demonstrated with the overwhelming intrinsic chiral superstructures.The new exciting strategy can create a gorgeous landscape of optical information processing and configuring,and even build up a unique laser in quadridimensional manipulation of wavelength,wavefront,spin angular momentum,and orbital angular momentum,endowing a sharp and narrow band-width with both remarkable thermodynamic stability and robust fatigueresistance.
