L. Frunza et al., Study of nematic liquid crystals confined in molecular sieves. 4-Octyl-4 '-cyanobipbenyl (8CB) in AlMCM-41 and cloverite, J MOL STRUC, 563, 2001, pp. 491-495
The confinement of a nematic liquid crystal (LC), 4-octyl-4'-cyanobiphenyl,
in the molecular sieves of AIMCM-41 and cloverite type is investigated by
dielectric spectroscopy, thermal analysis and FTIR spectroscopy. We focus h
erein on the samples containing the LC not only in the pores and cavities,
but also on the external surface of the molecular sieve grains. A bulk-like
dynamical behaviour was found for these samples. An interaction of the LC
molecules with the surface took place by coordination to Lewis sites and by
hydrogen bonding with OH groups. (C) 2001 Elsevier Science B.V. All rights
reserved.