TY - JOUR N2 - The molecular dynamics of the well-known nematic liquid crystal 4-n-pentyl-4′-cyanobiphenyl geometrically restricted in Anopore and Synpor porous membranes with various pore structure and treated by different surfactants (namely decanoic acid and lecithin) is compared. In the Anopore membrane the chosen surfactants induce the homeotropic orientation of the molecules on the walls of the cylindrical pores and observed corresponding relaxation processes (librational modes) are practically the same. The dielectric measurements of lecithin treated Synpor membranes reveals the reorientation of the molecules from planar to homeotropic on the complex multilayer structure present in their volume. The dielectric strengths of the observed two molecular processes (δ-process and librational mode) are inversed in the ratio compared to the untreated membranes. The observed differences in molecular dynamics results from the orientation of the liquid crystal molecules in untreated and treated membranes and the structure of the membranes themselves. L1 - http://journals.pan.pl/Content/115270/PDF/opelre_2019_27_4_339-344.pdf L2 - http://journals.pan.pl/Content/115270 PY - 2019 IS - No 4 EP - 344 KW - Dielectric spectroscopy KW - Molecular dynamics KW - Confinement KW - Nematic liquid crystal KW - Porous membranes KW - Surfactants A1 - Różański, S.A. PB - Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology VL - vol. 27 DA - 30.11.2019 T1 - The molecular dynamics of nematic liquid crystal confined in porous membranes treated by different surfactants SP - 339 UR - http://journals.pan.pl/dlibra/publication/edition/115270 T2 - Opto-Electronics Review ER -