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

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dc.contributor.authorOsman, Faridah
dc.date.accessioned2019-03-06T02:15:33Z
dc.date.available2019-03-06T02:15:33Z
dc.date.issued2013-07
dc.description.abstractFour 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.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/7834
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectLiquid Crystal Dimers Consistingen_US
dc.subjectEster And Disulphide Bridging Groupsen_US
dc.titleSynthesis And Anisotropic Properties Of Liquid Crystal Dimers Consisting Of Ester And Disulphide Bridging Groupsen_US
dc.typeThesisen_US
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