Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 3, Pages 1196-1200Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b11558
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Funding
- Volkswagen Foundation
- Dutch Science Foundation NWO [13PR3105]
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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 light adaptive molecular actuators and hold promise in terms of soft robotics.
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