Azobenzene-decorated cellulose nanocrystals as photo-switchable chiral solutes in nematic liquid crystals?
Journal of Materials Chemistry C Pub Date: 2022-11-17 DOI: 10.1039/D2TC04444G
Abstract
In this work, we validate that cellulose nanocrystals (CNCs), surface-functionalized with pro-mesogenic azobenzene pendants, can act as photoswitchable chiral solutes in a nematic liquid crystal (N-LC). Upon UV illumination, the helical pitch and thus the helical twisting power (βw) can be altered based on the trans–cis photoisomerization of the azobenzene pendants. This approach shows that CNCs—biorenewable chiral additives with a commensurate, rod-like shape to N-LC molecules—can be adapted just like common small molecule organic chiral solutes in LC phases based on simple surface modifications.
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Journal Name：Journal of Materials Chemistry C
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CAS no.: 89640-58-4
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