Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups

Four new series of dimers consist of ester and disulphide bridging groups have been synthesized and the anisotropic properties for each dimer characterized. These series comprise of two non-symmetric dimers which are α-{4-[(4-substituted-phenylimino)methyl]carbonyl)phenoxy]phenoxy}-ω-[4-(4-(R,S)-2-m...

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Main Author:	Osman, Faridah
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QD1-999 Chemistry
Online Access:	http://eprints.usm.my/43595/1/Faridah%20Binti%20Osman24.pdf
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id	my-usm-ep.43595
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spelling	my-usm-ep.435952019-04-12T05:26:11Z Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups 2013-07 Osman, Faridah QD1-999 Chemistry Four new series of dimers consist of ester and disulphide bridging groups have been synthesized and the anisotropic properties for each dimer characterized. These series comprise of two non-symmetric dimers which are α-{4-[(4-substituted-phenylimino)methyl]carbonyl)phenoxy]phenoxy}-ω-[4-(4-(R,S)-2-methylbutyloxy carbonylphenyl)phenoxy]hexanoate, X-E6-RSMB and α-{4-[(4-substituted-phenyl imino)methyl]carbonyl)phenoxy]phenoxy}-ω-[4-(4-(S)-2-methylbutyloxycarbonyl phenyl)phenoxy]hexanoate, X-E6-SMB and also the other two symmetric dimers (6-{4-[(4-substituted-phenylimino)methyl]phenoxy}hexyl)disulphide, X-6-SS-6-X and (6-{4-[(4-bromophenylimino)methyl]phenoxy}alkyl)disulphide, Br-n-SS-n-Br. The differences between the two series of non-symmetric dimers can be attributed to the presence of various terminal substituents and the introduction of chiral and racemic centres at the biphenyl fragments. For both series of symmetrical dimers the differences can be attributed to the variety of the spacer length and terminal substituents. 2013-07 Thesis http://eprints.usm.my/43595/ http://eprints.usm.my/43595/1/Faridah%20Binti%20Osman24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kimia
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QD1-999 Chemistry
spellingShingle	QD1-999 Chemistry Osman, Faridah Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups
description	Four new series of dimers consist of ester and disulphide bridging groups have been synthesized and the anisotropic properties for each dimer characterized. These series comprise of two non-symmetric dimers which are α-{4-[(4-substituted-phenylimino)methyl]carbonyl)phenoxy]phenoxy}-ω-[4-(4-(R,S)-2-methylbutyloxy carbonylphenyl)phenoxy]hexanoate, X-E6-RSMB and α-{4-[(4-substituted-phenyl imino)methyl]carbonyl)phenoxy]phenoxy}-ω-[4-(4-(S)-2-methylbutyloxycarbonyl phenyl)phenoxy]hexanoate, X-E6-SMB and also the other two symmetric dimers (6-{4-[(4-substituted-phenylimino)methyl]phenoxy}hexyl)disulphide, X-6-SS-6-X and (6-{4-[(4-bromophenylimino)methyl]phenoxy}alkyl)disulphide, Br-n-SS-n-Br. The differences between the two series of non-symmetric dimers can be attributed to the presence of various terminal substituents and the introduction of chiral and racemic centres at the biphenyl fragments. For both series of symmetrical dimers the differences can be attributed to the variety of the spacer length and terminal substituents.
format	Thesis
qualification_level	Master's degree
author	Osman, Faridah
author_facet	Osman, Faridah
author_sort	Osman, Faridah
title	Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups
title_short	Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups
title_full	Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups
title_fullStr	Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups
title_full_unstemmed	Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups
title_sort	synthesis and anisotropic properties of liquid crystal dimers consisting of ester and disulphide bridging groups
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kimia
publishDate	2013
url	http://eprints.usm.my/43595/1/Faridah%20Binti%20Osman24.pdf
_version_	1747821244006268928

Synthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groups

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