Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters

A series offluorinated azobenzene esters have been synthesized and studied by polarized optical microscopy (POM) and UV-Vis spectrophotometry. The–CO2C2H5group with monofluoro-substituted azobenzene exhibited nematic and smectic phases whereas difluoro-substituted azobenzene showed only the nematic...

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Main Authors:	Mei, Gan Siew, A. R., Yuvaraj, Lutfor, M. R., M. M., Yusoff, Hegde, Gurumurthy
Format:	Article
Language:	English English
Published:	Royal Society of Chemistry 2015
Subjects:	QD Chemistry QC Physics
Online Access:	http://umpir.ump.edu.my/id/eprint/8081/ http://umpir.ump.edu.my/id/eprint/8081/ http://umpir.ump.edu.my/id/eprint/8081/ http://umpir.ump.edu.my/id/eprint/8081/1/fist-2015-lutfor-synthesis%20liquid%20crystal%20characterization-full.pdf http://umpir.ump.edu.my/id/eprint/8081/7/Synthesis%2C%20Liquid%20Crystal%20Characterization%20and%20Photo-Switching%20Studies%20on%20Fluorine%20Substituted%20Azobenzene%20Based%20Esters.pdf

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spelling	ump-80812018-02-12T08:19:13Z http://umpir.ump.edu.my/id/eprint/8081/ Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters Mei, Gan Siew A. R., Yuvaraj Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy QD Chemistry QC Physics A series offluorinated azobenzene esters have been synthesized and studied by polarized optical microscopy (POM) and UV-Vis spectrophotometry. The–CO2C2H5group with monofluoro-substituted azobenzene exhibited nematic and smectic phases whereas difluoro-substituted azobenzene showed only the nematic phase. The addition of the electronegativefluorine atom plays an important role in photoisomerization of the azobenzene molecules. The monofluoro-substituted azobenzene gave strong photoisomerization in solution as compared with its diflouro counterparts. In these systems,trans–cis isomerization occurred after 4 minutes and cis–trans isomerization occurred after 22 hours which is much longer than expected forfluorine-substituted azobenzene systems. The presented results might have an influence on creating optical data storage devices. Royal Society of Chemistry 2015-12-15 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/8081/1/fist-2015-lutfor-synthesis%20liquid%20crystal%20characterization-full.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/8081/7/Synthesis%2C%20Liquid%20Crystal%20Characterization%20and%20Photo-Switching%20Studies%20on%20Fluorine%20Substituted%20Azobenzene%20Based%20Esters.pdf Mei, Gan Siew and A. R., Yuvaraj and Lutfor, M. R. and M. M., Yusoff and Hegde, Gurumurthy (2015) Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters. RSC Advances, 5 (9). pp. 6279-6285. ISSN 2046-2069 http://dx.doi.org/10.1039/C4RA13700K DOI: 10.1039/C4RA13700K
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	QD Chemistry QC Physics
spellingShingle	QD Chemistry QC Physics Mei, Gan Siew A. R., Yuvaraj Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters
description	A series offluorinated azobenzene esters have been synthesized and studied by polarized optical microscopy (POM) and UV-Vis spectrophotometry. The–CO2C2H5group with monofluoro-substituted azobenzene exhibited nematic and smectic phases whereas difluoro-substituted azobenzene showed only the nematic phase. The addition of the electronegativefluorine atom plays an important role in photoisomerization of the azobenzene molecules. The monofluoro-substituted azobenzene gave strong photoisomerization in solution as compared with its diflouro counterparts. In these systems,trans–cis isomerization occurred after 4 minutes and cis–trans isomerization occurred after 22 hours which is much longer than expected forfluorine-substituted azobenzene systems. The presented results might have an influence on creating optical data storage devices.
format	Article
author	Mei, Gan Siew A. R., Yuvaraj Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy
author_facet	Mei, Gan Siew A. R., Yuvaraj Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy
author_sort	Mei, Gan Siew
title	Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters
title_short	Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters
title_full	Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters
title_fullStr	Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters
title_full_unstemmed	Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters
title_sort	synthesis, liquid crystal characterization and photo-switching studies on fluorine substituted azobenzene based esters
publisher	Royal Society of Chemistry
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/8081/ http://umpir.ump.edu.my/id/eprint/8081/ http://umpir.ump.edu.my/id/eprint/8081/ http://umpir.ump.edu.my/id/eprint/8081/1/fist-2015-lutfor-synthesis%20liquid%20crystal%20characterization-full.pdf http://umpir.ump.edu.my/id/eprint/8081/7/Synthesis%2C%20Liquid%20Crystal%20Characterization%20and%20Photo-Switching%20Studies%20on%20Fluorine%20Substituted%20Azobenzene%20Based%20Esters.pdf
first_indexed	2023-09-18T22:05:22Z
last_indexed	2023-09-18T22:05:22Z
_version_	1777414672360669184

Synthesis, Liquid Crystal Characterization and Photo-Switching Studies on Fluorine Substituted Azobenzene based Esters

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