Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal

Two series of fluorine-substituted benzoate ester type rod-shaped liquid crystals incorporating the azobenzene as side arm linked with terminal double bonds as polymerizable functional groups were synthesized and characterized by polarized-light optical microscopy (POM), differential scanning calori...

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Main Authors:	M. M., Yusoff, Lutfor, M. R., Hegde, Gurumurthy, Mahrokh, Azazpour, Sandeep, Kumar
Format:	Article
Language:	English English
Published:	Elsevier 2013
Subjects:	Q Science (General) QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/4697/ http://umpir.ump.edu.my/id/eprint/4697/ http://umpir.ump.edu.my/id/eprint/4697/ http://umpir.ump.edu.my/id/eprint/4697/1/fist-2013-mashitah-SynthesisAndCharacterization.pdf http://umpir.ump.edu.my/id/eprint/4697/2/Published_paper_-2013.pdf

id	ump-4697
recordtype	eprints
spelling	ump-46972018-02-12T08:22:30Z http://umpir.ump.edu.my/id/eprint/4697/ Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal M. M., Yusoff Lutfor, M. R. Hegde, Gurumurthy Mahrokh, Azazpour Sandeep, Kumar Q Science (General) QD Chemistry Two series of fluorine-substituted benzoate ester type rod-shaped liquid crystals incorporating the azobenzene as side arm linked with terminal double bonds as polymerizable functional groups were synthesized and characterized by polarized-light optical microscopy (POM), differential scanning calorimetry (DSC) and UV–visible spectroscopy investigations. Thus, rod-shaped monomers, namely 4a and 4b having odd and even number of carbon in the terminal group exhibited nematic phase and SmA type phase was found at lower temperature. Compound 5 showed nematic phase whereas compound 6 showed SmA phase. These rod-shaped molecules exhibit strong photoisomerization behaviour in solution. The photoswitching properties of the compounds showed trans to cis isomerization in about 10 s, whereas the reverse process takes place about 120 min in solutions. Proposed materials may have potential to use it in optical storage devices. Elsevier 2013-12 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/4697/1/fist-2013-mashitah-SynthesisAndCharacterization.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/4697/2/Published_paper_-2013.pdf M. M., Yusoff and Lutfor, M. R. and Hegde, Gurumurthy and Mahrokh, Azazpour and Sandeep, Kumar (2013) Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal. Journal of Fluorine Chemistry, 156. pp. 230-235. ISSN 0022-1139 http://dx.doi.org/10.1016/j.jfluchem.2013.10.004 DOI: 10.1016/j.jfluchem.2013.10.004
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	Q Science (General) QD Chemistry
spellingShingle	Q Science (General) QD Chemistry M. M., Yusoff Lutfor, M. R. Hegde, Gurumurthy Mahrokh, Azazpour Sandeep, Kumar Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal
description	Two series of fluorine-substituted benzoate ester type rod-shaped liquid crystals incorporating the azobenzene as side arm linked with terminal double bonds as polymerizable functional groups were synthesized and characterized by polarized-light optical microscopy (POM), differential scanning calorimetry (DSC) and UV–visible spectroscopy investigations. Thus, rod-shaped monomers, namely 4a and 4b having odd and even number of carbon in the terminal group exhibited nematic phase and SmA type phase was found at lower temperature. Compound 5 showed nematic phase whereas compound 6 showed SmA phase. These rod-shaped molecules exhibit strong photoisomerization behaviour in solution. The photoswitching properties of the compounds showed trans to cis isomerization in about 10 s, whereas the reverse process takes place about 120 min in solutions. Proposed materials may have potential to use it in optical storage devices.
format	Article
author	M. M., Yusoff Lutfor, M. R. Hegde, Gurumurthy Mahrokh, Azazpour Sandeep, Kumar
author_facet	M. M., Yusoff Lutfor, M. R. Hegde, Gurumurthy Mahrokh, Azazpour Sandeep, Kumar
author_sort	M. M., Yusoff
title	Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal
title_short	Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal
title_full	Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal
title_fullStr	Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal
title_full_unstemmed	Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal
title_sort	synthesis and characterization of liquid crystalline azobenzene chromophores with fluorobenzene terminal
publisher	Elsevier
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/4697/ http://umpir.ump.edu.my/id/eprint/4697/ http://umpir.ump.edu.my/id/eprint/4697/ http://umpir.ump.edu.my/id/eprint/4697/1/fist-2013-mashitah-SynthesisAndCharacterization.pdf http://umpir.ump.edu.my/id/eprint/4697/2/Published_paper_-2013.pdf
first_indexed	2023-09-18T21:59:32Z
last_indexed	2023-09-18T21:59:32Z
_version_	1777414305667350528

Synthesis and Characterization of Liquid Crystalline Azobenzene Chromophores with Fluorobenzene Terminal

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