Three-state Structural Switching and Selective Molecular Interactions of Cylindrical Concentric Monodomain Liquid Crystal Elastomer

Mieko Arisawa, Miyu Yoshida, Kohei Fukumoto, Tsukasa Sawato, Masahiko Yamaguchi, Masaki Matsubara, Kiyoshi Kanie

Research output: Contribution to journalArticlepeer-review

Abstract

A cross-linked poly(acrylate) containing an ethynylhelicene (P)-pentamer was synthesized by radical polymerization between two horizontally aligned films with a parallel arrangement in trifluoromethylbenzene. The resulting liquid crystal elastomer swollen in bromobenzene showed the Maltese cross, which indicated a cylindrical concentric monodomain structure of the millimeter-order size as determined by polarized optical microscopy (POM) analysis. In toluene, a homogeneously bright POM image was obtained, which reversibly changed in intensity upon heating and cooling. Addition of an (M)-tetramer to the liquid crystal elastomer in toluene produced a hetero-double-helix exhibiting the Maltese cross, whose intensity did not change upon heating and cooling. The three states can be switched by addition and removal of an (M)-tetramer and solvents.

Original languageEnglish
Pages (from-to)12604-12609
Number of pages6
JournalChemistrySelect
Volume6
Issue number45
DOIs
Publication statusPublished - Dec 6 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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