New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals

The first examples of liquid crystalline pyrimidine-based photo-switchable bent-core monomers incorporating azobenzene as side arms linked with terminal double bonds as polymerizable functional groups are synthesized and characterized. Polarizing optical microscopy (POM), differential scanning calor...

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Main Authors:	M. M., Yusoff, Hegde, Gurumurthy, Lutfor, M. R., Muhammad Nor Fazli, Abd Malek, Srinivasa, Hosapalya T., Kumar, Sandeep
Format:	Article
Language:	English
Published:	Royal Society of Chemistry 2013
Subjects:	Q Science (General) QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/4704/ http://umpir.ump.edu.my/id/eprint/4704/ http://umpir.ump.edu.my/id/eprint/4704/ http://umpir.ump.edu.my/id/eprint/4704/1/New_pyrimidine_based_bent_core_LC.pdf

id	ump-4704
recordtype	eprints
spelling	ump-47042018-02-12T08:34:39Z http://umpir.ump.edu.my/id/eprint/4704/ New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals M. M., Yusoff Hegde, Gurumurthy Lutfor, M. R. Muhammad Nor Fazli, Abd Malek Srinivasa, Hosapalya T. Kumar, Sandeep Q Science (General) QD Chemistry The first examples of liquid crystalline pyrimidine-based photo-switchable bent-core monomers incorporating azobenzene as side arms linked with terminal double bonds as polymerizable functional groups are synthesized and characterized. Polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction analysis reveal that the bent-shaped lower homologue compounds are crystalline in nature whereas higher homologue compounds display the stable enantiotropic B6 phase. They exhibit fast photoisomerization effects in solution and relatively slow photoisomerization effects in liquid crystal cells. In solution both trans–cis and cis–trans occur at around 3 s and 200 s, respectively, whereas in solids they occur at around 10 s to 200 min. These are some of the first examples of azobenzene liquid crystals which exhibit very fast switching properties in solutions. Royal Society of Chemistry 2013-05 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/4704/1/New_pyrimidine_based_bent_core_LC.pdf M. M., Yusoff and Hegde, Gurumurthy and Lutfor, M. R. and Muhammad Nor Fazli, Abd Malek and Srinivasa, Hosapalya T. and Kumar, Sandeep (2013) New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals. New Journal of Chemistry, 37 (8). pp. 2460-2467. ISSN 1144-0546 http://dx.doi.org/10.1039/C3NJ00359K DOI: 10.1039/C3NJ00359K
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General) QD Chemistry
spellingShingle	Q Science (General) QD Chemistry M. M., Yusoff Hegde, Gurumurthy Lutfor, M. R. Muhammad Nor Fazli, Abd Malek Srinivasa, Hosapalya T. Kumar, Sandeep New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals
description	The first examples of liquid crystalline pyrimidine-based photo-switchable bent-core monomers incorporating azobenzene as side arms linked with terminal double bonds as polymerizable functional groups are synthesized and characterized. Polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction analysis reveal that the bent-shaped lower homologue compounds are crystalline in nature whereas higher homologue compounds display the stable enantiotropic B6 phase. They exhibit fast photoisomerization effects in solution and relatively slow photoisomerization effects in liquid crystal cells. In solution both trans–cis and cis–trans occur at around 3 s and 200 s, respectively, whereas in solids they occur at around 10 s to 200 min. These are some of the first examples of azobenzene liquid crystals which exhibit very fast switching properties in solutions.
format	Article
author	M. M., Yusoff Hegde, Gurumurthy Lutfor, M. R. Muhammad Nor Fazli, Abd Malek Srinivasa, Hosapalya T. Kumar, Sandeep
author_facet	M. M., Yusoff Hegde, Gurumurthy Lutfor, M. R. Muhammad Nor Fazli, Abd Malek Srinivasa, Hosapalya T. Kumar, Sandeep
author_sort	M. M., Yusoff
title	New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals
title_short	New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals
title_full	New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals
title_fullStr	New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals
title_full_unstemmed	New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals
title_sort	new pyrimidine-based photo-switchable bent-core liquid crystals
publisher	Royal Society of Chemistry
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/4704/ http://umpir.ump.edu.my/id/eprint/4704/ http://umpir.ump.edu.my/id/eprint/4704/ http://umpir.ump.edu.my/id/eprint/4704/1/New_pyrimidine_based_bent_core_LC.pdf
first_indexed	2023-09-18T21:59:33Z
last_indexed	2023-09-18T21:59:33Z
_version_	1777414306562834432

New Pyrimidine-based Photo-switchable Bent-core Liquid Crystals

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