EFFECT OF LINKER CHEMISTRY AND TERMINAL SUBSTITUENTS ON THE LIQUID CRYSTALLINE PROPERTIES OF BIS(AZOBENZENE) MESOGENS

Persistent Link:
http://hdl.handle.net/10150/193436
Title:
EFFECT OF LINKER CHEMISTRY AND TERMINAL SUBSTITUENTS ON THE LIQUID CRYSTALLINE PROPERTIES OF BIS(AZOBENZENE) MESOGENS
Author:
Biswas, Soma
Issue Date:
2008
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Azobenzene upon photochemical E/Z isomerization changes both its shape and size. The E-azobenzene moiety falls in the class of calamitic liquid crystalline mesogens, producing a wide variety of mesophases. Two series of linear bis(azobenzene) compounds, one with phenyl benzoate linkage and the other with benzyl benzoate linkage were synthesized. The termini of these molecules ranged from a dodecyloxy chain to hydrophobic amphiphilic dendrons up to first generation. We determined the effects of both the linkages and generation number on the mesogenic properties of these compounds. Our results show that the mesogenic behavior of these bis(azobenzene) compounds are highly dependent on the linkages between individual azobenzenes and that for the bis(azobenzene) compounds of the phenyl benzoate series, generation number had an effect on the liquid crystalline mesophase of the compounds
Type:
text; Electronic Thesis
Keywords:
Azobenzene Mesogen; calamitic (bis) azobenzene; Dendronised materials; Liquid Crystals; polycatenar; smectic C mesophase
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Chemistry; Graduate College
Degree Grantor:
University of Arizona
Advisor:
McGrath, Dominic V.
Committee Chair:
McGrath, Dominic V.

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleEFFECT OF LINKER CHEMISTRY AND TERMINAL SUBSTITUENTS ON THE LIQUID CRYSTALLINE PROPERTIES OF BIS(AZOBENZENE) MESOGENSen_US
dc.creatorBiswas, Somaen_US
dc.contributor.authorBiswas, Somaen_US
dc.date.issued2008en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractAzobenzene upon photochemical E/Z isomerization changes both its shape and size. The E-azobenzene moiety falls in the class of calamitic liquid crystalline mesogens, producing a wide variety of mesophases. Two series of linear bis(azobenzene) compounds, one with phenyl benzoate linkage and the other with benzyl benzoate linkage were synthesized. The termini of these molecules ranged from a dodecyloxy chain to hydrophobic amphiphilic dendrons up to first generation. We determined the effects of both the linkages and generation number on the mesogenic properties of these compounds. Our results show that the mesogenic behavior of these bis(azobenzene) compounds are highly dependent on the linkages between individual azobenzenes and that for the bis(azobenzene) compounds of the phenyl benzoate series, generation number had an effect on the liquid crystalline mesophase of the compoundsen_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
dc.subjectAzobenzene Mesogenen_US
dc.subjectcalamitic (bis) azobenzeneen_US
dc.subjectDendronised materialsen_US
dc.subjectLiquid Crystalsen_US
dc.subjectpolycatenaren_US
dc.subjectsmectic C mesophaseen_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineChemistryen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMcGrath, Dominic V.en_US
dc.contributor.chairMcGrath, Dominic V.en_US
dc.contributor.committeememberMash, Eugeneen_US
dc.contributor.committeememberLichtenberger, Dennisen_US
dc.identifier.proquest10186en_US
dc.identifier.oclc659750766en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.