Side-chain functionalized liquid crystalline polymers and blends, 6 - Phase behavior, structure and magnetic properties of Cu(II) containing liquid crystalline ionomers

Citation
E. Barmatov et al., Side-chain functionalized liquid crystalline polymers and blends, 6 - Phase behavior, structure and magnetic properties of Cu(II) containing liquid crystalline ionomers, MACRO RAPID, 21(6), 2000, pp. 281-286
Citations number
23
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
21
Issue
6
Year of publication
2000
Pages
281 - 286
Database
ISI
SICI code
1022-1336(20000414)21:6<281:SFLCPA>2.0.ZU;2-5
Abstract
The new series of the LC ionomers containing copper ions has been obtained and their phase behavior has been studied. It was shown that at low metal i on concentrations in the LC ionomers (similar to 2 mol-%) the induction of the SmA phase is observed. An increase in the copper ion concentration is a ccompanied by a slight rise in clearing and glass transition temperatures. The magnetic properties of LC ionomers were studied at the first time. It w as shown that LC ionomers are antiferromagneties with a strong exchange int eraction J = 174-178 cm(-1). Temperature dependencies of the magnetic momen t and the magnetic anisotropy are adequately described in the framework of the 1-D-Heisenberg linear-chain model.