Premium
Proton NMR studies of smectic‐C phases
Author(s) -
Limmer St.,
Findeisen M.
Publication year - 1983
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170180115
Subject(s) - tilt (camera) , proton , liquid crystal , chemistry , proton nmr , nuclear magnetic resonance , materials science , crystallography , condensed matter physics , physics , mathematics , geometry , nuclear physics
We present proton NMR second moments studies of some compounds exhibiting smectic‐C phases. From the comparison of experimental and theoretical angular dependences of the second moments the tilt angles δ are derived. The ratio f of the second moments of samples with statistical distribution of domain orientations and of perfectly aligned samples is calculated and compared with experimental data. For certain substances with constant tilt here are significant deviations from the theoretically expected values suggesting that the underlying theoretical model has still to be modified.