The locally polar smectic A phase in V-shaped molecules

E. Joon Choi, Eun Chol Kim, Sang Byung Park, Wang Cheol Zin, You Jin Lee, Jae Hoon Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

For focusing on the polar smectic A phase derived from the V-shaped molecules, bent-core molecules with an acute-angled central core (Ar = 1,2-phenylene or 2,3-naphthylene) and a lateral halogen substituent (X = F or Cl) were synthesized. Their mesomorphic properties were investigated by DSC, polarizing microscopy, X-ray and electro-optical measurements. We found that a compound with Ar/X = 2,3-naphthylene/Cl forms the conventional smectic A phase, whereas three compounds with Ar/X = 1,2-phenylene/F, 1,2-phenylene/Cl and 2,3-naphthylene/F form the locally polar smectic A phase (SmAPR). According to our knowledge this is the first obvious experimental evidence that V-shaped molecules with an acute-subtended angled central core, in cooperation with a lateral halogen substituent, can form the SmAPR.

Original languageEnglish
Pages (from-to)24930-24935
Number of pages6
JournalJournal of Materials Chemistry
Volume22
Issue number47
DOIs
StatePublished - 2012 Dec 21

Fingerprint

Halogens
Molecules
Microscopic examination
X rays

Cite this

Choi, E. J., Kim, E. C., Park, S. B., Zin, W. C., Lee, Y. J., & Kim, J. H. (2012). The locally polar smectic A phase in V-shaped molecules. Journal of Materials Chemistry, 22(47), 24930-24935. https://doi.org/10.1039/c2jm35530b
Choi, E. Joon ; Kim, Eun Chol ; Park, Sang Byung ; Zin, Wang Cheol ; Lee, You Jin ; Kim, Jae Hoon. / The locally polar smectic A phase in V-shaped molecules. In: Journal of Materials Chemistry. 2012 ; Vol. 22, No. 47. pp. 24930-24935.
@article{a615edc9f5344ed8bcfa76688ef7ff2b,
title = "The locally polar smectic A phase in V-shaped molecules",
abstract = "For focusing on the polar smectic A phase derived from the V-shaped molecules, bent-core molecules with an acute-angled central core (Ar = 1,2-phenylene or 2,3-naphthylene) and a lateral halogen substituent (X = F or Cl) were synthesized. Their mesomorphic properties were investigated by DSC, polarizing microscopy, X-ray and electro-optical measurements. We found that a compound with Ar/X = 2,3-naphthylene/Cl forms the conventional smectic A phase, whereas three compounds with Ar/X = 1,2-phenylene/F, 1,2-phenylene/Cl and 2,3-naphthylene/F form the locally polar smectic A phase (SmAPR). According to our knowledge this is the first obvious experimental evidence that V-shaped molecules with an acute-subtended angled central core, in cooperation with a lateral halogen substituent, can form the SmAPR.",
author = "Choi, {E. Joon} and Kim, {Eun Chol} and Park, {Sang Byung} and Zin, {Wang Cheol} and Lee, {You Jin} and Kim, {Jae Hoon}",
year = "2012",
month = "12",
day = "21",
doi = "10.1039/c2jm35530b",
language = "English",
volume = "22",
pages = "24930--24935",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
number = "47",

}

Choi, EJ, Kim, EC, Park, SB, Zin, WC, Lee, YJ & Kim, JH 2012, 'The locally polar smectic A phase in V-shaped molecules', Journal of Materials Chemistry, vol. 22, no. 47, pp. 24930-24935. https://doi.org/10.1039/c2jm35530b

The locally polar smectic A phase in V-shaped molecules. / Choi, E. Joon; Kim, Eun Chol; Park, Sang Byung; Zin, Wang Cheol; Lee, You Jin; Kim, Jae Hoon.

In: Journal of Materials Chemistry, Vol. 22, No. 47, 21.12.2012, p. 24930-24935.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The locally polar smectic A phase in V-shaped molecules

AU - Choi, E. Joon

AU - Kim, Eun Chol

AU - Park, Sang Byung

AU - Zin, Wang Cheol

AU - Lee, You Jin

AU - Kim, Jae Hoon

PY - 2012/12/21

Y1 - 2012/12/21

N2 - For focusing on the polar smectic A phase derived from the V-shaped molecules, bent-core molecules with an acute-angled central core (Ar = 1,2-phenylene or 2,3-naphthylene) and a lateral halogen substituent (X = F or Cl) were synthesized. Their mesomorphic properties were investigated by DSC, polarizing microscopy, X-ray and electro-optical measurements. We found that a compound with Ar/X = 2,3-naphthylene/Cl forms the conventional smectic A phase, whereas three compounds with Ar/X = 1,2-phenylene/F, 1,2-phenylene/Cl and 2,3-naphthylene/F form the locally polar smectic A phase (SmAPR). According to our knowledge this is the first obvious experimental evidence that V-shaped molecules with an acute-subtended angled central core, in cooperation with a lateral halogen substituent, can form the SmAPR.

AB - For focusing on the polar smectic A phase derived from the V-shaped molecules, bent-core molecules with an acute-angled central core (Ar = 1,2-phenylene or 2,3-naphthylene) and a lateral halogen substituent (X = F or Cl) were synthesized. Their mesomorphic properties were investigated by DSC, polarizing microscopy, X-ray and electro-optical measurements. We found that a compound with Ar/X = 2,3-naphthylene/Cl forms the conventional smectic A phase, whereas three compounds with Ar/X = 1,2-phenylene/F, 1,2-phenylene/Cl and 2,3-naphthylene/F form the locally polar smectic A phase (SmAPR). According to our knowledge this is the first obvious experimental evidence that V-shaped molecules with an acute-subtended angled central core, in cooperation with a lateral halogen substituent, can form the SmAPR.

UR - http://www.scopus.com/inward/record.url?scp=84873101859&partnerID=8YFLogxK

U2 - 10.1039/c2jm35530b

DO - 10.1039/c2jm35530b

M3 - Article

AN - SCOPUS:84873101859

VL - 22

SP - 24930

EP - 24935

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 47

ER -