From water soluble mesogens to liquid crystal gold nanocomposites : synthesis and investigation of flexible chain variation in rod-shaped mesogens

Alqahtany, Faleh

Chemistry
March 2015

Thesis or dissertation


Rights
© 2015 Faleh Alqahtany. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder.
Abstract

A number of new liquid crystalline systems were synthesized and the liquid crystal phase behaviour was investigated. The investigation of the liquid crystal properties involved the characterisation of the neat substances by optical polarizing microscopy (OPM), differential scanning calorimetry (DSC) and for selected samples by x-ray diffraction (XRD) of magnetically aligned sample. The molecular architectures explored are based on a number of rod shaped architectures functionalized with either alkyl groups or ethylenoxy groups, at both ends of the central aromatic core, or at one terminus. The number was increased to three ethylenoxy chains. Additionally, for selected mesogen the results of the LC behaviour on the attachment gold nanoparticles was investigated. For the materials bearing ethylenoxy chains the mesomorphic phase behaviour on mixing with water was investigated by OPM of a number of selected mixtures.

Publisher
Department of Chemistry, The University of Hull
Supervisor
Mehl, Georg H.
Qualification level
Doctoral
Qualification name
PhD
Language
English
Extent
5 MB
Identifier
hull:13218
QR Code