White Rose University Consortium logo
University of Leeds logo University of Sheffield logo York University logo

Liquid Crystalline Silsesquioxanes

Booth, Richard (2013) Liquid Crystalline Silsesquioxanes. MSc by research thesis, University of York.

[img]
Preview
Text
Richard Booth Liquid Crystalline Silsesquioxanes.pdf
Available under License Creative Commons Attribution-Noncommercial-No Derivative Works 2.0 UK: England & Wales.

Download (5Mb) | Preview
[img] Archive
XRD.cif.zip
Available under License Creative Commons Attribution-Noncommercial-No Derivative Works 2.0 UK: England & Wales.

Download (18Kb)

Abstract

Abstract In order to study the effects of calamitic mesogenic units on the self-assembly of liquid crystalline phases in silsesquioxane supermolecules, various di- and tri- substituted silsesquioxane supermolecules have been prepared. They contain incompletely condensed silsesquioxanes substituted with a variety of alkyl chains. These moieties contain various calamitic mesogenic units including two-ring and three-ring terminally appended mesogenic units as well as laterally appended mesogenic units. These mesogenic units were prepared using hydrosilylation chemistry and the properties of these new compounds were elucidated using polarized optical microscopy, differential scanning calorimetry and single crystal X-ray diffraction techniques. A novel octasilsesquioxane core has been prepared with two distinct moieties covalently bonded to it in order to study the effect of a non-mesogenic chiral entity along with a calamitic mesogenic group on the self-assembly of this mesogenic moiety in the liquid crystalline phase. This compound has been prepared using standard hydrosilylation techniques and its properties have been elucidated using polarized optical microscopy and differential scanning calorimetry.

Item Type: Thesis (MSc by research)
Academic Units: The University of York > Chemistry (York)
Depositing User: Mr Richard Booth
Date Deposited: 07 May 2014 14:43
Last Modified: 23 Oct 2016 00:18
URI: http://etheses.whiterose.ac.uk/id/eprint/5800

You do not need to contact us to get a copy of this thesis. Please use the 'Download' link(s) above to get a copy.
You can contact us about this thesis. If you need to make a general enquiry, please see the Contact us page.

Actions (repository staff only: login required)