Back to Search
Start Over
2H NMR and X-Ray Studies of a Substance Exhibiting Crystal-Like Smectic Phases.
- Source :
-
Molecular Crystals & Liquid Crystals . 2007, Vol. 465 Issue 1, p109-119. 11p. 8 Graphs. - Publication Year :
- 2007
-
Abstract
- DSC, polarizing optical microscopy and X-ray diffractometry were used to investigate the mesomorphic behaviour of 4-n-butyl-4'-acetyl-biphenyl, which resulted to exhibit a smectic E and, possibly, a smectic K phase. Additionally, 2H NMR spectroscopy was applied on a selectively deuterated sample to study the properties of alignment of the mesophases within a magnetic field, as well as to characterize molecular dynamics. Two motional processes were found to be active in the smectic E phase, namely fast π-flips of the benzene rings and molecular self-diffusion about the herringbone bidimensional lattice of the layers. No molecular overall diffusional motions were observed by either 2H NMR spectroscopy or dielectric relaxation measurements. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15421406
- Volume :
- 465
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Molecular Crystals & Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 24827344
- Full Text :
- https://doi.org/10.1080/15421400701205636