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Updated: Apr 23, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
Published on: February 27, 2019
Chiroptical molecular propellers based on hexakis(phenylethynyl)benzene through the complexation-induced
Ryo Katoono1, Keiichi Kusaka, Shunsuke Kawai
1Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan. katoono@sci.hokudai.ac.jp tak@sci.hokudai.ac.jp.
Abstract:
We designed hexakis(phenylethynyl)benzene derivatives with a tertiary amide group on each blade to achieve a helically biased propeller arrangement through the complexation-induced intramolecular transmission of point chirality. A hydrogen-bonding ditopic guest was captured at two amide groups, and thus could pair two neighboring blades to form a supramolecular cyclic structure, in which an auxiliary chiral group associated with a blade acted as a chiral handle to control the helical bias, while the chiral auxiliary did not exert any helical influence on the dynamic helicity in the absence of a guest due to the high flexibility of each blade.
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