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Glycomacrocycle-Based Azobenzene Derivatives as Chiral Dopants for Photoresponsive Cholesteric Liquid Crystals

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Title: Glycomacrocycle-Based Azobenzene Derivatives as Chiral Dopants for Photoresponsive Cholesteric Liquid Crystals
Authors: Kim, Yuna Browse this author →KAKEN DB
Mafy, Noushaba Nusrat Browse this author
Maisonneuve, Stephane Browse this author
Lin, Chaoqi Browse this author
Tamaoki, Nobuyuki Browse this author →KAKEN DB
Xie, Juan Browse this author
Keywords: cholesteric liquid crystal
glycomacrocyclic azobenzene
helical twisting power
unidirectional rotation
Issue Date: 18-Nov-2020
Publisher: American Chemical Society
Journal Title: ACS applied materials & interfaces
Volume: 12
Issue: 46
Start Page: 52146
End Page: 52155
Publisher DOI: 10.1021/acsami.0c14880
Abstract: We demonstrate photoresponsive cholesteric liquid crystals (CLCs) doped with glycomacrocyclic azobenzene derivatives, which exhibit large conformational changes, providing dynamic control of helical superstructures in response to a light stimulus. An unprecedented shortening of the helical pitch length and the empowerment of helical twisting power up to 500% are observed upon trans (E) to cis (Z) photoisomerization. Light-driven dynamic helix twisting and untwisting behavior affords the first example of glycomacrocyclic azobenzene-based CLCs, which can drive the mechanical movement of micro-objects. Two modes of rotation-two-directional or one-directional rotational motion (crankshaft mode)-are realized. In particular, the latter mode based on the reversible cholesteric texture transition between homogeneous stripes and focal conics leads to the accumulation of the rotation angles achieving the amplified mechanical movements.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS applied materials & interfaces, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see .
Type: article (author version)
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: キム ユナ

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