Structure and polymorphism of biaxial bent-core smectic liquid crystal

S. Sreenilayam; M. Nagaraj; Y. P. Panarin; J. K. Vij; A. Lehmann; C. Tschierske

doi:10.1080/15421406.2011.609453

Structure and polymorphism of biaxial bent-core smectic liquid crystal

S. Sreenilayam, M. Nagaraj, Y. P. Panarin, J. K. Vij, A. Lehmann, C. Tschierske

Research output: Contribution to journal › Article › peer-review

Abstract

The mesomorphic properties of a homologous series of achiral bent-core compounds are studied by polarizing optical microscopy, electro-optics and polarization measurements. Induction of a new orthogonal smectic phases with the increase of alkyl side chain length was observed. One of the compounds exhibits a unique phase transition between four non-tilted smectic phases (SmAPA-SmAPAR-SmAPR-SmA). The uniaxial but antiferroelectric nature of SmAP _AR phase was confirmed by POM, current response, the 2nd harmonic electro-optic response and polarization measurements. The structure of SmAP _AR phase was studied theoretically by Next-Nearest-Neighbor model and was identified as Sm_AP.

Original language	English
Pages (from-to)	133-139
Number of pages	7
Journal	Molecular Crystals and Liquid Crystals
Volume	553
DOIs	https://doi.org/10.1080/15421406.2011.609453
Publication status	Published - 2 Feb 2012

Keywords

Bent-core molecules
biaxial liquid crystal
dielectric relaxation
electro-optic effects
ferroelectricity

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10.1080/15421406.2011.609453

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title = "Structure and polymorphism of biaxial bent-core smectic liquid crystal",

abstract = "The mesomorphic properties of a homologous series of achiral bent-core compounds are studied by polarizing optical microscopy, electro-optics and polarization measurements. Induction of a new orthogonal smectic phases with the increase of alkyl side chain length was observed. One of the compounds exhibits a unique phase transition between four non-tilted smectic phases (SmAPA-SmAPAR-SmAPR-SmA). The uniaxial but antiferroelectric nature of SmAP AR phase was confirmed by POM, current response, the 2nd harmonic electro-optic response and polarization measurements. The structure of SmAP AR phase was studied theoretically by Next-Nearest-Neighbor model and was identified as SmAP.",

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AU - Sreenilayam, S.

AU - Nagaraj, M.

AU - Panarin, Y. P.

AU - Vij, J. K.

AU - Lehmann, A.

AU - Tschierske, C.

PY - 2012/2/2

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AB - The mesomorphic properties of a homologous series of achiral bent-core compounds are studied by polarizing optical microscopy, electro-optics and polarization measurements. Induction of a new orthogonal smectic phases with the increase of alkyl side chain length was observed. One of the compounds exhibits a unique phase transition between four non-tilted smectic phases (SmAPA-SmAPAR-SmAPR-SmA). The uniaxial but antiferroelectric nature of SmAP AR phase was confirmed by POM, current response, the 2nd harmonic electro-optic response and polarization measurements. The structure of SmAP AR phase was studied theoretically by Next-Nearest-Neighbor model and was identified as SmAP.

KW - Bent-core molecules

KW - biaxial liquid crystal

KW - dielectric relaxation

KW - electro-optic effects

KW - ferroelectricity

UR - https://www.scopus.com/pages/publications/84855978535

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DO - 10.1080/15421406.2011.609453

M3 - Article

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SP - 133

EP - 139

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

ER -

Structure and polymorphism of biaxial bent-core smectic liquid crystal

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Keywords

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