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Novel chiral liquid crystal organic-inorganic hybrid nanoparticle systems : Design, synthesis and investigation

Ichim, Ionut Cameliu


Ionut Cameliu Ichim


Georg H. Mehl

Robert A., Dr. Lewis


A first step is taken towards the validation of organic synthesis techniques. Small molecular organic compounds were prepared as intermediates for the liquid crystal materials which exhibit room temperature cholesteric mesophases. These cholesterol based materials were then attached to silsesquioxanes. Both materials have low melting points and low transition temperatures. Phase diagrams, contact and miscibility experiments were performed in order to explain a more complicated cholesteric phase behaviour. The cholesteric mesogens were chemically attached to gold and iron/platinum nanoparticles. For all end materials exhaustive characterisation methods were applied.

The questions that were tried to be answered were related to the attachment of cholesterol based mesogens to silsesquioxane cores. Furthermore, the organic-silicon hybrid systems were used as a model for the mesogen covered gold and iron/platinum nanoparticles.

Cholesterol based liquid crystals with chiral nematic mesophase at room temperature were obtained. Hybrid systems with very short pitch cholesteric phase and low transition temperatures were also prepared. A new method for preparing gold nanoparticles was implemented. The present results indicate that it is possible to prepare nanoparticles with chiral nematic phase behaviour close to room temperature and iron/platinum nanoparticles with liquid crystal groups attached.


Ichim, I. C. (2013). Novel chiral liquid crystal organic-inorganic hybrid nanoparticle systems : Design, synthesis and investigation. (Thesis). University of Hull. Retrieved from

Thesis Type Thesis
Deposit Date Nov 11, 2013
Publicly Available Date Feb 23, 2023
Keywords Chemistry
Public URL
Additional Information Department of Chemistry, The University of Hull
Award Date Jul 1, 2013


Thesis (28.2 Mb)

Copyright Statement
© 2013 Ichim, Ionut Cameliu. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder.

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