Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion

Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion

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-...

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Main Authors: Akiko Yatsu, Takuya Yonehara, Hiromasa Goto
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Polymers
Subjects:
chiral dopant
chiral smectic
direct conversion
electro-dopant
ESR
liquid crystal
Online Access:https://www.mdpi.com/2073-4360/12/7/1547
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spelling doaj-4ff362cbff8b45689f366b0697a5b4f92020-11-25T03:16:41ZengMDPI AGPolymers2073-43602020-07-01121547154710.3390/polym12071547Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct ConversionAkiko Yatsu0Takuya Yonehara1Hiromasa Goto2Department of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba Ibaraki 305-8573, JapanDepartment of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba Ibaraki 305-8573, JapanDepartment of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba Ibaraki 305-8573, JapanThe 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.https://www.mdpi.com/2073-4360/12/7/1547chiral dopantchiral smecticdirect conversionelectro-dopantESRliquid crystal
collection DOAJ
language English
format Article
sources DOAJ
author Akiko Yatsu
Takuya Yonehara
Hiromasa Goto
spellingShingle Akiko Yatsu
Takuya Yonehara
Hiromasa Goto
Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion
Polymers
chiral dopant
chiral smectic
direct conversion
electro-dopant
ESR
liquid crystal
author_facet Akiko Yatsu
Takuya Yonehara
Hiromasa Goto
author_sort Akiko Yatsu
title Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion
title_short Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion
title_full Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion
title_fullStr Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion
title_full_unstemmed Induction of Polyacetylene to a Chiral Smectic Liquid Crystal–Chiral Direct Conversion
title_sort induction of polyacetylene to a chiral smectic liquid crystal–chiral direct conversion
publisher MDPI AG
series Polymers
issn 2073-4360
publishDate 2020-07-01
description 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.
topic chiral dopant
chiral smectic
direct conversion
electro-dopant
ESR
liquid crystal
url https://www.mdpi.com/2073-4360/12/7/1547
work_keys_str_mv AT akikoyatsu inductionofpolyacetylenetoachiralsmecticliquidcrystalchiraldirectconversion
AT takuyayonehara inductionofpolyacetylenetoachiralsmecticliquidcrystalchiraldirectconversion
AT hiromasagoto inductionofpolyacetylenetoachiralsmecticliquidcrystalchiraldirectconversion
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