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
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.