BSc, PhD (S'Hampton)
Chair in Chemistry
Liquid CrystalsLiquid crystals are a fascinating state of matter having certain properties characteristic of liquids with others typical of crystals. This duality of properties has important implications for the applications of liquid crystals which range from the familiar electro-optic displays to new types of fabrics whose colour changes depending on the mood of the wearer. Current research focuses on polymeric liquid crystals and, in particular, side chain liquid crystal polymers (SCLCP). The considerable application potential of SCLCPs in advanced electro-optic technologies, including information storage and non-linear optics, stems from the combination of macromolecular properties (mechanical integrity and ease of processibility) with the electro-optic characteristics of low molar mass mesogens. To realise such potential, however, materials having well-defined properties are required. Our research therefore involves: (a) the design and synthesis of novel polymers, (b) their thermal characterisation, and (c) micro- and macrostructural investigations. Other interests include polymer- dispersed liquid crystal displays and the synthesis of model compounds for liquid crystal polymers.
The scope of our studies will be greatly extended by the award of over Â£750k from SHEFC (Scottish Higher Education Funding Council) to set up SOMC (Scottish Offshore Materials Centre) which is a consortium of chemists, engineers and geologists at Aberdeen to examine the behaviour of real-size components under down-hole conditions (upto 2 kbar and 250Â° C).Â Our particular interest here is the Thermal Analysis Service.The availability of "almost unique" high-pressure, high-temperature (HPHT) facilities will enable us to carry out in situ investigations of a wide range of materials.
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Tailoring amide N-substitution to direct liquid crystallinity in benzanilide-based dimersJournal of molecular liquids, vol. 384, 122160Contributions to Journals: Articles
Can even-membered liquid crystal dimers exhibit the twist-bend nematic phase? The preparation and properties of disulphide and thioether linked dimersLiquid CrystalsContributions to Journals: Articles
Molecular structure and the twist-bend nematic phase: the role of spacer length in liquid crystal dimersLiquid Crystals, vol. 50, no. 4, pp. 725-736Contributions to Journals: Articles
The Ferroelectric Nematic Phase: On the Role of Lateral Alkyloxy ChainsLiquid CrystalsContributions to Journals: Articles
Ferroelectric Nematic-Isotropic Liquid Critical End PointPhysical Review Letters, vol. 130, no. 21, 216802Contributions to Journals: Articles
Using lateral substitution to control conformational preference and phase behaviour of benzanilide-based liquid crystal dimersChemPhysChem, vol. 24, no. 7, e202200758Contributions to Journals: Articles
The effects of alkylthio chains on the properties of symmetric liquid crystal dimersNew Journal of Chemistry, vol. 47, no. 15, pp. 7356-7368Contributions to Journals: Articles
Intrinsically Chiral Twist-Bend Nematogens: Interplay of Molecular and Structural Chirality in the NTB PhaseChemPhysChem, vol. 24, no. 6, e202200807Contributions to Journals: Articles
Temperature Dependence of the Electroclinic Effect in the Twist-Bend Nematic PhaseCrystals, vol. 13, no. 3, 465Contributions to Journals: Articles
Molecular Shape, Electronic Factors and the Ferroelectric Nematic PhaseChemistry : a European Journal, e202300073Contributions to Journals: Articles