Kreuzburg, C.; Kosfeld, R.; Kentgens, A.p.m.; Veeman, W.s.:
Motion of the mesogenic unit in liquid-crystalline polyesters.
1990
In: Macromolecules (Macromolecules), Jg. 23 (1990), Heft 20, S. 4363 - 4366
Artikel/Aufsatz in Zeitschrift / Fach: Chemie
Titel:
Motion of the mesogenic unit in liquid-crystalline polyesters.
Autor(in):
Kreuzburg, C.; Kosfeld, R.; Kentgens, A.p.m.; Veeman, W.s. im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen
Erscheinungsjahr:
1990
Erschienen in:
Macromolecules (Macromolecules), Jg. 23 (1990), Heft 20, S. 4363 - 4366
ISSN:

Abstract:

Motion of each ring in the p-terphenyl moiety of the mesogenic unit in polyester-di-Me siloxanes began at 5-10 Deg below the transition temp. into the liq-cryst. state as detd. from 13C magic-angle-spinning NMR spectra. The sudden onset of motion suggested a jump of the arom. rings over a 45-50 Deg rotational angle. Comparison of NMR data with theor. data indicated that intermol. forces detd. the obsd. motion.