Regensburg 2002 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Chemische Physik und Polymerphysik
CPP 15: Poster: Dünne Filme, Monolagen und Oberfl
ächen
CPP 15.12: Poster
Mittwoch, 13. März 2002, 16:30–18:00, B
On the mobility of sodium ions and of confined liquid crystals in faujasite — •L. Frunza1, L. Frunza1, H. Kosslick1, S. Frunza2, R. Fricke1, A. Schoenhals3, H. Kosslick1, R. Fricke1, and A. Schoenh als3 — 1Institute of Applied Chemistry, D-12489 Berlin, Germany — 2National Institute of Materials Physics, PO Box Mg07, R-76900 Bucharest-Magurele, Romania — 3Federal Institute of Materials Research and Testing, Unter den Eichen 87, D-12205 Berlin, Germany
Broadband dielectric spectroscopy (10mHz to 1GHz) was employed to study in a rather large temperature interval the molecular dynamics of the composite systems containing a nematic liquid crystal, 5CB, confined to NaY, a zeolite with faujasite structure. Thermal analysis was also performed in order to get information concerning the loading of the zeolite and the possible phase transitions. No phase transitions and no relaxation processes of the liquid crystal molecules inside the pores were observed. But remarkably, in the presence of these molecules the dielectric behavior of the faujasite host changes due to modifications appeared in the mobility of Na+ ions.