Speakers: Valentina Domenici (Department of Chemistry and Industrial Chemistry, University of Pisa)
Place: Na Slovance, přednáškový sál v přízemí
Organisers:
Department of Dielectrics
Presented in English
The development of NMR techniques applied in the last ten years to partially oriented systems, and in particular to liquid crystals, is the object of this talk. The evolution of NMR methods (i.e. new NMR pulse sequences) and the improvement of both theoretical models and mathematic tools for the analysis of NMR data specific for partially ordered systems allowed scientists to extend thein research to more and more complex materials, such as dendrimers, polymers and membranes, and to investigate unique phenomena, such as field-induced alignment and confining effects. Furthermore, the fast development of Nanoscience and Biomedicine is offering a rich variety of new “physical chemical” problems related to partially ordered materials. Recent selected research works will be discussed with particular emphasis: i) the effect of high magnetic fields on the supramolecular structure of chiral liquid crystalline phases, such as the SmC*, TGBA* and ‘de Vries’ type of SmA* phases, by means of solid state NMR and ii) the influence of the LC environment on the conformational properties of rod-like mesogens studied by high resolution solid state 13C NMR methods.
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