[2 types of temperature transitions in liquid crystals formed from poly(I).poly(C) molecules].
The small-angle X-ray scattering curves, CD spectra and textures of the liquid-crystalline phase formed from poly(I).poly(C) molecules in a water-salt solutions containing poly(ethylene glycol) at different temperatures were obtained. It was found that the heating of poly(1).poly(C) liquid-crystalline phase is accompanied by two types of transitions, the first one--a "cholesteric----"compensated" structure----cholesteric", the second--a "cholesteric----isotropic state" transition. The latter transition takes place at a temperature that corresponds to that of the separation of chains of the double-stranded poly(I).poly(C) molecule.
Skuridin
S G
SG
Badaev
N S
NS
Dembo
A T
AT
Damaschun
H
H
Lortkipanidze
G B
GB
D002942:Circular Dichroism; D003461:Crystallography; D011070:Poly I-C; D013696:Temperature; D014961:X-Ray Diffraction
D011070:Poly I-C
Dva tipa temperaturnykh perekhodov zhidkikh kristallov, sformirovannykh iz molekul poli(I).poli(C).