Stuart P Kitney

Publications (17) View all

• Article: Synthesis of liquid crystals using Suzuki–Miyaura coupling reactions using mesoporous, ligand-free Pd/Si3N4 catalysts in aqueous media

  Stuart P. Kitney, Fei Cheng, Shabbir Khan, Christopher N. Hope, William McNab, Stephen M. Kelly
  Liquid Crystals 08/2011; · 1.86 Impact Factor
• Article: Liquid crystalline organic semiconductors: nematic spiro[cyclopentyl-1,9′]fluorenes

  Muralidhar Reddy Billa, Krishna Kassireddy, Marta Haro, Manea S. Al-Kalifah, Stephen M. Kelly, Stuart P. Kitney, Mary O'Neill
  Liquid Crystals 07/2011; · 1.86 Impact Factor
• Article: Carbazole nematic liquid crystals

  Weixiao Bao, Muralidhar Reddy Billa, Krishna Kassireddy, Marta Haro, Michael J. Kelly, Stuart P. Kitney, Manea S. Al Kalifah, Pan Wei, Dewen Dong, Mary O'Neill, Stephen M. Kelly
  Liquid Crystals 10/2010; · 1.86 Impact Factor
• Article: Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor.

  Stefan Dröge, Manea S Al Khalifah, Mary O'Neill, Huw E Thomas, Henje S Simmonds, J Emyr Macdonald, Matthew P Aldred, Panos Vlachos, Stuart P Kitney, Andreas Löbbert, Stephen M Kelly
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  ABSTRACT: Grazing incidence X-ray diffraction is used to find the thin film morphology of an extended molecule with an irregular alternating fluorene-thiophene structure, which is used to obtain linearly polarized electroluminescence and the photovoltaic effect. The material has a room temperature nematic glassy phase and is uniaxially aligned in the plane of the film using photoalignment techniques. Two distinct intermolecular separations of 0.45 and 1.5 nm are identified showing that the molecules are lamellar. The lamellae stack with only local order and the two short axes of the lamellae have no preferred orientation at the surface or bulk of the film. Neighboring molecules show a wide range of longitudinal displacements along the axis of the director, as expected for a nematic liquid crystal with no positional order. There is, however, a dominant feature corresponding to a longitudinal offset of 0.51 nm. Unlike some other fluorene-containing semiconductors where microphase separation of the side chains inhibits close packing of neighboring molecules, the lamellar structure and 0.45 intermolecular spacing found here allows pi-pi intermolecular interactions for efficient carrier transport. We obtain a room temperature hole mobility up to 3.4 x 10-3 cm2 V-1 s-1 using a time-of-flight technique.
  The Journal of Physical Chemistry B 02/2009; 113(1):49-53. · 3.70 Impact Factor
• Article: A new approach to photoalignment: photo-addition to a self-assembled monolayer

  Stefan Dröge, Mary O'Neill, Andreas Löbbert, Stuart P. Kitney, Stephen M. Kelly, Pan Wei, Dewen Dong
  Journal of Materials Chemistry 01/2009; · 5.97 Impact Factor