Hydrogen-Bonded Homochiral Molecular Crystals with Mechanical Elasticity and Photomechanical Bending
CHEMISTRY OF MATERIALS(2023)
摘要
Molecular crystals with mechanical elasticity and photomechanicalbending based on the homochiral effect are presented. Through homochiralassembly, the V-shaped chiral cyanostilbenes form a hydrogen-bondedstair-like packing and further arrange into tile-window structures.These structures have enough free volume for molecular motions, promotingcrystal flexibility and photoresponses. Notably, the hydrogen bondsplay a dual function in the homochiral crystal. They enhance the resilienceof the crystal to improve elasticity and facilitate force transmissionfrom Z-E isomerization for crystal photobending.Our work broadens the application of the homochiral effect in regulatingdynamic crystal properties.
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关键词
mechanical elasticity,crystals,hydrogen-bonded
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