Enhancement of flexoelastic ratio of nematic liquid crystal doped with hydrogen-bonded bimesogen molecules

Jongyoon Kim; Jahyeon Koo; Jimin Park; Kwang Un Jeong; Ji Hoon Lee

doi:10.1016/j.molliq.2018.12.150

Enhancement of flexoelastic ratio of nematic liquid crystal doped with hydrogen-bonded bimesogen molecules

Jongyoon Kim
, Jahyeon Koo
, Jimin Park
, Kwang Un Jeong^*
, Ji Hoon Lee

^*Corresponding author for this work

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

5 Scopus citations

Abstract

We synthesized a new liquid crystal (LC) dopant 4-[7-(4′-Cyanobiphenyl-4-yl)hexyloxy]bezoic acid (CBO7OBA) which can form dimers by hydrogen-bonding. We mixed the hydrogen-bondable CBO7OBA dopants with commercial nematic liquid crystal (NLC) mixtures and investigated the change of the flexoelastic ratio of the mixture. The flexoelastic ratio of the CBO7OBA-doped NLC mixture was increased up to 4.7 C/Nm, while that of the pure NLC was 2.0 C/Nm at room temperature. The greater flexoelastic ratio of the CBO7OBA-doped NLC mixture is thought to be due to the bent-shape and the large dipole moment of the CBO7OBA molecules.

Original language	English
Pages (from-to)	541-545
Number of pages	5
Journal	Journal of Molecular Liquids
Volume	277
DOIs	https://doi.org/10.1016/j.molliq.2018.12.150
State	Published - 2019.03.1

Keywords

Bimesogenic liquid crystal
Flexoelastic ratio
Flexoelectric effect
Flexoelectro-optic method

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Petroleum
Chemistry
Physics & Astronomy

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10.1016/j.molliq.2018.12.150

Cite this

@article{a8e0987e37f6455c8052a50500e82f60,

title = "Enhancement of flexoelastic ratio of nematic liquid crystal doped with hydrogen-bonded bimesogen molecules",

abstract = "We synthesized a new liquid crystal (LC) dopant 4-[7-(4′-Cyanobiphenyl-4-yl)hexyloxy]bezoic acid (CBO7OBA) which can form dimers by hydrogen-bonding. We mixed the hydrogen-bondable CBO7OBA dopants with commercial nematic liquid crystal (NLC) mixtures and investigated the change of the flexoelastic ratio of the mixture. The flexoelastic ratio of the CBO7OBA-doped NLC mixture was increased up to 4.7 C/Nm, while that of the pure NLC was 2.0 C/Nm at room temperature. The greater flexoelastic ratio of the CBO7OBA-doped NLC mixture is thought to be due to the bent-shape and the large dipole moment of the CBO7OBA molecules.",

keywords = "Bimesogenic liquid crystal, Flexoelastic ratio, Flexoelectric effect, Flexoelectro-optic method",

author = "Jongyoon Kim and Jahyeon Koo and Jimin Park and Jeong, \{Kwang Un\} and Lee, \{Ji Hoon\}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = mar,

day = "1",

doi = "10.1016/j.molliq.2018.12.150",

language = "English",

volume = "277",

pages = "541--545",

journal = "Journal of Molecular Liquids",

issn = "0167-7322",

}

TY - JOUR

T1 - Enhancement of flexoelastic ratio of nematic liquid crystal doped with hydrogen-bonded bimesogen molecules

AU - Kim, Jongyoon

AU - Koo, Jahyeon

AU - Park, Jimin

AU - Jeong, Kwang Un

AU - Lee, Ji Hoon

PY - 2019/3/1

Y1 - 2019/3/1

N2 - We synthesized a new liquid crystal (LC) dopant 4-[7-(4′-Cyanobiphenyl-4-yl)hexyloxy]bezoic acid (CBO7OBA) which can form dimers by hydrogen-bonding. We mixed the hydrogen-bondable CBO7OBA dopants with commercial nematic liquid crystal (NLC) mixtures and investigated the change of the flexoelastic ratio of the mixture. The flexoelastic ratio of the CBO7OBA-doped NLC mixture was increased up to 4.7 C/Nm, while that of the pure NLC was 2.0 C/Nm at room temperature. The greater flexoelastic ratio of the CBO7OBA-doped NLC mixture is thought to be due to the bent-shape and the large dipole moment of the CBO7OBA molecules.

AB - We synthesized a new liquid crystal (LC) dopant 4-[7-(4′-Cyanobiphenyl-4-yl)hexyloxy]bezoic acid (CBO7OBA) which can form dimers by hydrogen-bonding. We mixed the hydrogen-bondable CBO7OBA dopants with commercial nematic liquid crystal (NLC) mixtures and investigated the change of the flexoelastic ratio of the mixture. The flexoelastic ratio of the CBO7OBA-doped NLC mixture was increased up to 4.7 C/Nm, while that of the pure NLC was 2.0 C/Nm at room temperature. The greater flexoelastic ratio of the CBO7OBA-doped NLC mixture is thought to be due to the bent-shape and the large dipole moment of the CBO7OBA molecules.

KW - Bimesogenic liquid crystal

KW - Flexoelastic ratio

KW - Flexoelectric effect

KW - Flexoelectro-optic method

UR - https://www.scopus.com/pages/publications/85059410410

U2 - 10.1016/j.molliq.2018.12.150

DO - 10.1016/j.molliq.2018.12.150

M3 - Journal article

AN - SCOPUS:85059410410

SN - 0167-7322

VL - 277

SP - 541

EP - 545

JO - Journal of Molecular Liquids

JF - Journal of Molecular Liquids

ER -

Enhancement of flexoelastic ratio of nematic liquid crystal doped with hydrogen-bonded bimesogen molecules

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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