Micellar shape dependence of cholesteric pitch in lyotropic liquid crystals

Authors
Longa, L Bachteler, M Neto, AMF Cholewiak, G Oliveira, FA
Citation
L. Longa et al., Micellar shape dependence of cholesteric pitch in lyotropic liquid crystals, LIQ CRYST, 27(12), 2000, pp. 1669-1673
Citations number
21
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LIQUID CRYSTALS
ISSN journal
02678292 → ACNP
Volume
27
Issue
12
Year of publication
2000
Pages
1669 - 1673
Database
ISI
SICI code
0267-8292(200012)27:12<1669:MSDOCP>2.0.ZU;2-2
Abstract
A generalized Landau-Ginzburg-de Gennes theory of cholesteric pitch in lyot ropic chiral liquid crystals is presented. Using the non-critical order par ameter, introduced by Toledano and Figueiredo Neto, the question of pitch d ependence on micellar shape is addressed. This extra order parameter accoun ts for the shape change of the micelles. The predictions agree qualitativel y with the unique experimental observations of Lopes and Figueiredo Neto.