Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety

Calamitic liquid crystalline dimer containing azobenzene moiety and a decyloxy biphenyl linked by flexible spacers {4-[7-(4′-decyloxy-biphenyl-4-yloxy)-alkyloxy]-phenyl}-(4-decyl-phenyl)-diazene has been synthesized and characterized by spectroscopic methods. The transition temperatures and phase be...

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Main Authors: S. Sandy Subala, B. Syama Sundar, S. Sreehari Sastry
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2013/939406
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author S. Sandy Subala
B. Syama Sundar
S. Sreehari Sastry
author_facet S. Sandy Subala
B. Syama Sundar
S. Sreehari Sastry
author_sort S. Sandy Subala
collection DOAJ
description Calamitic liquid crystalline dimer containing azobenzene moiety and a decyloxy biphenyl linked by flexible spacers {4-[7-(4′-decyloxy-biphenyl-4-yloxy)-alkyloxy]-phenyl}-(4-decyl-phenyl)-diazene has been synthesized and characterized by spectroscopic methods. The transition temperatures and phase behaviours were studied by Differential Scanning Calorimeter (DSC) and Polarizing Optical Microscope (POM). The synthesized compounds exhibited enantiotropic liquid crystal phase with higher spacer display nematic and smectic C phases while lower spacer shows nematic and smectic A phases.
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institution Kabale University
issn 2090-9063
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record_format Article
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spelling doaj-art-90ebd32bcdac40daa98713997f921dbc2025-02-03T01:24:26ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/939406939406Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene MoietyS. Sandy Subala0B. Syama Sundar1S. Sreehari Sastry2Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522510, IndiaDepartment of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522510, IndiaDepartment of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522510, IndiaCalamitic liquid crystalline dimer containing azobenzene moiety and a decyloxy biphenyl linked by flexible spacers {4-[7-(4′-decyloxy-biphenyl-4-yloxy)-alkyloxy]-phenyl}-(4-decyl-phenyl)-diazene has been synthesized and characterized by spectroscopic methods. The transition temperatures and phase behaviours were studied by Differential Scanning Calorimeter (DSC) and Polarizing Optical Microscope (POM). The synthesized compounds exhibited enantiotropic liquid crystal phase with higher spacer display nematic and smectic C phases while lower spacer shows nematic and smectic A phases.http://dx.doi.org/10.1155/2013/939406
spellingShingle S. Sandy Subala
B. Syama Sundar
S. Sreehari Sastry
Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety
Journal of Chemistry
title Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety
title_full Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety
title_fullStr Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety
title_full_unstemmed Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety
title_short Synthesis and Characterization of Nonsymmetric Liquid Crystal Dimer Containing Biphenyl and Azobenzene Moiety
title_sort synthesis and characterization of nonsymmetric liquid crystal dimer containing biphenyl and azobenzene moiety
url http://dx.doi.org/10.1155/2013/939406
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AT ssreeharisastry synthesisandcharacterizationofnonsymmetricliquidcrystaldimercontainingbiphenylandazobenzenemoiety