Influence of geometric confinement on discotic liquid crystals in nano-templates

The general aim of the project is to gain an essential increase of the basic knowledge on structure-property relationships of nanoconfined Discotic Liquid Crystals (DCLC). There is a growing international interest on DCLC from both fundamental and applied point of research. The latter is due to a potential application of DCLC as innovative materials in organic and/or nanoelectronics. Confining DCLC into nanochannels of a template (porous silicon, porous aluminium) can serve as break-through approach in this field to optimize and tune the formation of columnar phases over large length scales and realizing the coupling with other solid interfaces. The characterization of the nanoconfined DCLC interrelates a wide range of methods which includes structural characterization (Calorimetry, birefringence measurements X-ray, neutron scattering), the investigation of the molecular mobility (dielectric relaxation, NMR, quasielastic neutron scattering) and application related studies like conductivity measurements.

Publikationen

• Ndao, Makha; Lefort,Ronan; Cerclier, Carole V.; Busselez, Remi; Morineau, Denis; Frick, Bernhard; Ollivier, Jacques; Kityk, Andriy V.; Huber, Patrick: Molecular dynamics of pyrene based discotic liquid crystals confined in nanopores probed by incoherent quasielastic neutron scattering RSC Adv.(4), 2014.
• Sylvia Calus, Andriy V. Kityk, Patrick Huber: Molecular ordering of the discotic liquid crystal HAT6 confined in mesoporous solids Microporous and Mesoporous Materials , 2014(26): S. 197, 2014.
• Carole V Cerclier, Makha Ndao, Remi Busselez, Ronan Lefort, Eric Grelet, Patrick Huber, Andriy V Kityk, Andreas Schönhals and Denis Morineau: Structure and phase behavior of a discotic columnar liquid crystal confined in nanochannels Journal of Physical Chemistry C, 2012(116(35)): S. 18990 ff., 2012.
• Andriy V. Kityk, Mark Busch, Daniel Rau, Sylvia Calus, Caroline V. Cerclier, Ronan Lefort, Denis Morineau, Eric Grelet, Christina Krause, Andreas, Schönhals, Bernhard Frick, Patrick Huber: Thermotropic orientational order of discotic liquid crystals in nanochannels: an optical polarimetry study and a Landau-de Gennes analysis Soft Matter, 2014(10): S. 4522, 2014.
• A. Schönhals, C. Krause, R. Zorn, F. Emmerling, B. Frick, P. Huber, J. Falkenhagen: Vibrational Density of States of Triphenylene Based Discotic Liquid Crystals: Dependence on the Length of the Alkyl Chain Physical Chemistry Chemical Physics, 2014(16): S. 7324-7333, 2014.