Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers

Three novel bent-shaped monomers, namely 1,3-phenylene bis-{4-[4-(n-allyloxyalkyloxy)phenylazo]benzoate} 5a–c, containing azobenzene as side arms, resorcinol as central units and terminal double bonds as polymerisable functional groups were synthesised and characterised. The mesophase behaviour was...

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Main Authors:	Hegde, Gurumurthy, Lutfor, M. R., Kumar, Sandeep, Tschierske, Carsten, Israel, Gunter, Ster, Diana
Format:	Article
Language:	English
Published:	Taylor & Francis 2009
Subjects:	Q Science (General) QC Physics
Online Access:	http://umpir.ump.edu.my/id/eprint/5412/ http://umpir.ump.edu.my/id/eprint/5412/ http://umpir.ump.edu.my/id/eprint/5412/ http://umpir.ump.edu.my/id/eprint/5412/1/2009_photoswitching.pdf

id	ump-5412
recordtype	eprints
spelling	ump-54122018-05-18T01:28:44Z http://umpir.ump.edu.my/id/eprint/5412/ Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers Hegde, Gurumurthy Lutfor, M. R. Kumar, Sandeep Tschierske, Carsten Israel, Gunter Ster, Diana Q Science (General) QC Physics Three novel bent-shaped monomers, namely 1,3-phenylene bis-{4-[4-(n-allyloxyalkyloxy)phenylazo]benzoate} 5a–c, containing azobenzene as side arms, resorcinol as central units and terminal double bonds as polymerisable functional groups were synthesised and characterised. The mesophase behaviour was investigated by polarising optical microscopy, differential scanning calorimetry and X-ray diffraction measurements and it was found that all three compounds display SmAintercal mesophases. These bent-shaped molecules exhibit strong photoisomerisation behaviour in solutions in which trans to cis isomerisation takes about 50 seconds whereas the reverse process takes almost 31 hours. Taylor & Francis 2009 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5412/1/2009_photoswitching.pdf Hegde, Gurumurthy and Lutfor, M. R. and Kumar, Sandeep and Tschierske, Carsten and Israel, Gunter and Ster, Diana (2009) Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers. Liquid Crystals, 36 (4). pp. 397-407. ISSN 0267-8292 (print); 1366-5855 (online) http://dx.doi.org/10.1080/02678290902923428 DOI: 10.1080/02678290902923428
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) QC Physics
spellingShingle	Q Science (General) QC Physics Hegde, Gurumurthy Lutfor, M. R. Kumar, Sandeep Tschierske, Carsten Israel, Gunter Ster, Diana Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers
description	Three novel bent-shaped monomers, namely 1,3-phenylene bis-{4-[4-(n-allyloxyalkyloxy)phenylazo]benzoate} 5a–c, containing azobenzene as side arms, resorcinol as central units and terminal double bonds as polymerisable functional groups were synthesised and characterised. The mesophase behaviour was investigated by polarising optical microscopy, differential scanning calorimetry and X-ray diffraction measurements and it was found that all three compounds display SmAintercal mesophases. These bent-shaped molecules exhibit strong photoisomerisation behaviour in solutions in which trans to cis isomerisation takes about 50 seconds whereas the reverse process takes almost 31 hours.
format	Article
author	Hegde, Gurumurthy Lutfor, M. R. Kumar, Sandeep Tschierske, Carsten Israel, Gunter Ster, Diana
author_facet	Hegde, Gurumurthy Lutfor, M. R. Kumar, Sandeep Tschierske, Carsten Israel, Gunter Ster, Diana
author_sort	Hegde, Gurumurthy
title	Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers
title_short	Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers
title_full	Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers
title_fullStr	Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers
title_full_unstemmed	Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers
title_sort	synthesis and photoswitching properties of bent-shaped liquid crystals containing azobenzene monomers
publisher	Taylor & Francis
publishDate	2009
url	http://umpir.ump.edu.my/id/eprint/5412/ http://umpir.ump.edu.my/id/eprint/5412/ http://umpir.ump.edu.my/id/eprint/5412/ http://umpir.ump.edu.my/id/eprint/5412/1/2009_photoswitching.pdf
first_indexed	2023-09-18T22:00:44Z
last_indexed	2023-09-18T22:00:44Z
_version_	1777414380941475840

Synthesis and Photoswitching Properties of Bent-shaped Liquid Crystals Containing Azobenzene Monomers

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