Macroscopic Chirality of a Liquid Crystal from Nonchiral MoleculesPhysical Review E
AbstractThe transfer of chirality from nonchiral polymer networks to the racemic B2 phase of nonchiral banana-shaped molecules is demonstrated. This corresponds to the transfer of chirality from an achiral material to another achiral material. There are two levels of chirality transfers. (a) On a microscopic level the presence of a polymer network (chiral or nonchiral) favors a chiral state over a thermodynamically stable racemic state due to the inversion symmetry breaking at the polymer-liquid crystal interfaces. (b) A macroscopically chiral (enantimerically enriched) sample can be produced if the polymer network has a helical structure, and/or contains chemically chiral groups. The chirality transfer can be locally suppressed by exposing the liquid crystal to a strong electric field treatment.
Citation InformationAntal Jákli, Geetha G. Nair, C. K. Lee, R. Sun, et al.. "Macroscopic Chirality of a Liquid Crystal from Nonchiral Molecules" Physical Review E Vol. 63 Iss. 6 (2001)
Available at: http://works.bepress.com/liang-chy_chien/8/