THE USE OF THE DECYL ESTERS OF AMINO-ACID HYDROCHLORIDES AS CHIRAL DOPANTS IN THE FORMATION OF AMPHIPHILIC CHOLESTERIC LIQUID-CRYSTALS

Authors
RADLEY K MCLAY N GICQUEL K
Citation
K. Radley et al., THE USE OF THE DECYL ESTERS OF AMINO-ACID HYDROCHLORIDES AS CHIRAL DOPANTS IN THE FORMATION OF AMPHIPHILIC CHOLESTERIC LIQUID-CRYSTALS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 303, 1997, pp. 249-254
Citations number
10
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
303
Year of publication
1997
Pages
249 - 254
Database
ISI
SICI code
1058-725X(1997)303:<249:TUOTDE>2.0.ZU;2-M
Abstract
The decyl ester hydrochlorides of the amino acids serine, alanine, leu cine, methionine and methyl cysteine are accessed as chiral dopants in amphiphilic cholesteric liquid crystal formation. The sense and magni tude of the induced helical twist is found to be dependent on the achi ral host detergent, which were various alkyl-methyl ammonium bromide s alts. The results are interpreted in terms of the trans and cis rotame rs associated with the ester linkage. C-13-NMR is used to measure the rotamer populations. Each rotamer makes an opposite but an unequal con tribution to the total twist. The results for the serine ester did not fit this interpretation completely.