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

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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

Bibliographical 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.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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",

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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

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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

Abstract

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