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Induction of Polyacetylene to a Chiral Smectic Liquid Crystal-Chiral Direct Conversion.

ABSTRACT: The synthesis of polyacetylene-bearing pyrimidine-type three-ringed mesogenic core exhibiting smectic C (SmC) characteristics was conducted. Gas-phase iodine doping of the polymer provided evidence of chemical interaction between the polyene and iodine, which acted as an electron acceptor. The side-chain fluorine atom tilted the mesogen moiety to form SmC as a tilted liquid crystal. The addition of a small amount of chiral inducer yielded SmC* of the polymer as the chiral version of SmC. The liquid crystallinity and electronic properties of the π-conjugated chiral liquid crystal polymer with a helical structure were evaluated.

SUBMITTER: Yatsu A

PROVIDER: S-EPMC7407238 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Induction of Polyacetylene to a Chiral Smectic Liquid Crystal-Chiral Direct Conversion.

Yatsu Akiko A Yonehara Takuya T Goto Hiromasa H

Polymers 20200713 7

The synthesis of polyacetylene-bearing pyrimidine-type three-ringed mesogenic core exhibiting smectic C (SmC) characteristics was conducted. Gas-phase iodine doping of the polymer provided evidence of chemical interaction between the polyene and iodine, which acted as an electron acceptor. The side-chain fluorine atom tilted the mesogen moiety to form SmC as a tilted liquid crystal. The addition of a small amount of chiral inducer yielded SmC* of the polymer as the chiral version of SmC. The liq ...[more]

PMID: 32668734

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