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2 H NMR STUDY OF A DEUTERIUM LABELLED FERROELECTRIC LIQUID-CRYSTALLINE POLYSILOXANE.
- Source :
- Molecular Crystals & Liquid Crystals; 2003, Vol. 398 Issue 1, p127, 10p
- Publication Year :
- 2003
-
Abstract
- We investigated by 2 H NMR spectroscopy a ferroelectric liquid crystalline polysiloxane (poly11EB1M7- d 2 ) derived from the mesogen (+)( S ) 4-[4′-(1-methylheptyloxy)]biphenyl 4-(10-undecenyloxy)benzoate- d 2 (11EB1M7- d 2 ). The labelling on the phenyl fragment allowed us to study the orientational order of such unit. From the analysis of the deuterium lineshapes we could also determine the effect of the magnetic field on the mesogen alignment and the ferroelectric helix distortion. In particular, deuterium spectra showed a contribution due to aligned mesogens in addition to a "Pake-like" one. This was accounted for by considering isotropic distribution of helices, with possible helix distorsion. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYMER liquid crystals
SILOXANES
FERROELECTRIC crystals
DEUTERIUM
Subjects
Details
- Language :
- English
- ISSN :
- 15421406
- Volume :
- 398
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Molecular Crystals & Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 10838301
- Full Text :
- https://doi.org/10.1080/15421400390221547