Polarization inversion in a ferroelectric liquid crystal studied by H1 nuclear magnetic resonance

J. K. Cha; K. W. Lee; Cheol Eui Lee; J. I. Jin

doi:10.1063/1.3337101

Polarization inversion in a ferroelectric liquid crystal studied by H1 nuclear magnetic resonance

J. K. Cha, K. W. Lee, Cheol Eui Lee, J. I. Jin

Department of Physics

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4 Citations (Scopus)

Abstract

A ferroelectric liquid crystal, S -2-methylbutyl 4- n -octanoyloxybiphenyl- 4′ -carboxylate, undergoing a characteristic polarization inversion, has been studied by H1 nuclear magnetic resonance (NMR). In addition to the discontinuities at the first-order isotropic and recrystallization phase transitions, the nuclear magnetic relaxation revealed a weak anomaly attributed to the soft mode at the Sm-A-Sm-C*liquid crystalline phase transition. Besides, the polarization inversion in the Sm-C*phase was manifested in the nuclear magnetic relaxation as well as in the NMR lineshape and in the temperature-dependent relative peak positions of the NMR line components, indicating that the polarization inversion is associated with a conformational transition.

Original language	English
Article number	092903
Journal	Applied Physics Letters
Volume	96
Issue number	9
DOIs	https://doi.org/10.1063/1.3337101
Publication status	Published - 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3337101

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@article{7615285c63c4446fabd1d040d600ef04,

title = "Polarization inversion in a ferroelectric liquid crystal studied by H1 nuclear magnetic resonance",

abstract = "A ferroelectric liquid crystal, S -2-methylbutyl 4- n -octanoyloxybiphenyl- 4′ -carboxylate, undergoing a characteristic polarization inversion, has been studied by H1 nuclear magnetic resonance (NMR). In addition to the discontinuities at the first-order isotropic and recrystallization phase transitions, the nuclear magnetic relaxation revealed a weak anomaly attributed to the soft mode at the Sm-A-Sm-C*liquid crystalline phase transition. Besides, the polarization inversion in the Sm-C*phase was manifested in the nuclear magnetic relaxation as well as in the NMR lineshape and in the temperature-dependent relative peak positions of the NMR line components, indicating that the polarization inversion is associated with a conformational transition.",

author = "Cha, {J. K.} and Lee, {K. W.} and Lee, {Cheol Eui} and Jin, {J. I.}",

note = "Funding Information: This work was supported by the Korea Ministry of Education, Science and Technology (NRL Program No. R0A-2008-000-20066-0, User Program of Proton Engineering Frontier Project and Project No. 20090082672). The Korean Basic Science Institute (KBSI) is gratefully acknowledged for the measurements.",

year = "2010",

doi = "10.1063/1.3337101",

language = "English",

volume = "96",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "9",

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TY - JOUR

T1 - Polarization inversion in a ferroelectric liquid crystal studied by H1 nuclear magnetic resonance

AU - Cha, J. K.

AU - Lee, K. W.

AU - Lee, Cheol Eui

AU - Jin, J. I.

N1 - Funding Information: This work was supported by the Korea Ministry of Education, Science and Technology (NRL Program No. R0A-2008-000-20066-0, User Program of Proton Engineering Frontier Project and Project No. 20090082672). The Korean Basic Science Institute (KBSI) is gratefully acknowledged for the measurements.

PY - 2010

Y1 - 2010

N2 - A ferroelectric liquid crystal, S -2-methylbutyl 4- n -octanoyloxybiphenyl- 4′ -carboxylate, undergoing a characteristic polarization inversion, has been studied by H1 nuclear magnetic resonance (NMR). In addition to the discontinuities at the first-order isotropic and recrystallization phase transitions, the nuclear magnetic relaxation revealed a weak anomaly attributed to the soft mode at the Sm-A-Sm-C*liquid crystalline phase transition. Besides, the polarization inversion in the Sm-C*phase was manifested in the nuclear magnetic relaxation as well as in the NMR lineshape and in the temperature-dependent relative peak positions of the NMR line components, indicating that the polarization inversion is associated with a conformational transition.

AB - A ferroelectric liquid crystal, S -2-methylbutyl 4- n -octanoyloxybiphenyl- 4′ -carboxylate, undergoing a characteristic polarization inversion, has been studied by H1 nuclear magnetic resonance (NMR). In addition to the discontinuities at the first-order isotropic and recrystallization phase transitions, the nuclear magnetic relaxation revealed a weak anomaly attributed to the soft mode at the Sm-A-Sm-C*liquid crystalline phase transition. Besides, the polarization inversion in the Sm-C*phase was manifested in the nuclear magnetic relaxation as well as in the NMR lineshape and in the temperature-dependent relative peak positions of the NMR line components, indicating that the polarization inversion is associated with a conformational transition.

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U2 - 10.1063/1.3337101

DO - 10.1063/1.3337101

M3 - Article

AN - SCOPUS:77949407790

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

M1 - 092903

ER -

Polarization inversion in a ferroelectric liquid crystal studied by H1 nuclear magnetic resonance

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