Orientation, structure and dynamics in the highly ordered smectic phases of 7BEF5 by H-2-NMR

Authors
Calucci, L Catalano, D Fodor-Csorba, K Forte, C Veracini, CA
Citation
L. Calucci et al., Orientation, structure and dynamics in the highly ordered smectic phases of 7BEF5 by H-2-NMR, MOL CRYST A, 331, 1999, pp. 1869-1879
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN journal
1058725X → ACNP
Volume
331
Year of publication
1999
Part
4
Pages
1869 - 1879
Database
ISI
SICI code
1058-725X(1999)331:<1869:OSADIT>2.0.ZU;2-5
Abstract
H-2-NMR spectroscopy is employed to investigate the orientational order in the nematic and smectic A, B, and G phases formed by 4-(2-methylbutyl)pheny l-4'n-heptylbiphenyl-4-carboxylate (7BEF5). The dynamics of the aromatic mo lecular core is studied in a temperature interval including the S-A - S-B t ransition, by the analysis of the deuterium Zeeman and Quadrupolar relaxati on times with the rotational diffusion model.