On the mobility of sodium ions and of confined liquid crystals in molecular sieves of faujasite type

Autor:	Andreas Schönhals, L. Frunza, R Fricke, H. Kosslick, S. Frunza
Rok vydání:	2002
Předmět:	Phase transition Chemistry Stereochemistry Relaxation (NMR) Analytical chemistry Dielectric Faujasite engineering.material Condensed Matter Physics Molecular sieve Electronic Optical and Magnetic Materials Liquid crystal Materials Chemistry Ceramics and Composites engineering Molecule Zeolite
Zdroj:	Journal of Non-Crystalline Solids. :503-509
ISSN:	0022-3093
DOI:	10.1016/s0022-3093(02)01472-2
Popis:	Broadband dielectric spectroscopy (10 −2 –10 9 Hz) was employed to study in a rather large temperature interval the molecular dynamics of the composite systems containing a nematic liquid crystal (LC), 4- n -pentyl-4′-cyanobiphenyl, 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 LC 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::45219d25b9f7725ffc5db4e8f09ea7ab https://doi.org/10.1016/s0022-3093(02)01472-2 Zobrazit plný text záznamu Full Text from ScienceDirect