Dimorphism SmA-B-2 in bent-core mesogens with perfluorinated terminal chains

Authors
Kovalenko, L Weissflog, W Grande, S Diele, S Pelzl, G Wirth, I
Citation
L. Kovalenko et al., Dimorphism SmA-B-2 in bent-core mesogens with perfluorinated terminal chains, LIQ CRYST, 27(5), 2000, pp. 683-687
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LIQUID CRYSTALS
ISSN journal
02678292 → ACNP
Volume
27
Issue
5
Year of publication
2000
Pages
683 - 687
Database
ISI
SICI code
0267-8292(200005)27:5<683:DSIBMW>2.0.ZU;2-D
Abstract
Several banana-shaped liquid crystal materials with perfluorinated terminal chains have been synthesized. A dimorphism SmA-B-2 was proved by X-ray stu dies and electro-optical measurements. The unusual ratio d/L (d = layer spa cing, L = molecular length) and the unexpected behaviour of the layer spaci ng at the phase transition SmA --> B-2 can be interpreted by a change of th e packing of the bent molecules.