作者：Alexander Ryabchun, Quan Li (co-first author), Federico Lancia, Ivan Aprahamian, Nathalie Katsonis
關鍵字：photoswitch, liquid crystal polymer
論文來源：期刊
具體來源：JACS
發表時間：2019年
Interfacing molecular photoswitches with liquid crystal polymers enables the amplification of their nanoscale motion into macroscopic shape transformations. Typically, the mechanism responsible for actuation involves light-induced molecular disorder. Here, we demonstrate that bistable hydrazones can drive (chiral) shape transformations in liquid crystal polymer networks, with photogenerated polymer shapes displaying a longterm stability that mirrors that of the switches. The mechanism involves a photoinduced buildup of tension in the polymer, with a negligible influence on the liquid crystalline order. Hydrazone-doped liquid crystal systems thus diversify the toolbox available to the field of lightadaptive molecular actuators and hold promise in terms of soft robotics.