Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Conformational and Hydrodynamic Parameters of Hyperbranched Pyridylphenylene Polymers. / Tsvetkov, N.V.; Gubarev, A.S.; Lebedeva, E.V.; Lezov, A.A.; Mikhailova, M.E.; Kolomiets, I.P.; Mikusheva, N.G.; Akhmadeeva, L.I.; Kuchkina, N.V.; Serkova, E.S.; Shifrina, Z.B.
в: Polymer International, Том 66, № 4, 01.04.2017, стр. 583-592.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Conformational and Hydrodynamic Parameters of Hyperbranched Pyridylphenylene Polymers
AU - Tsvetkov, N.V.
AU - Gubarev, A.S.
AU - Lebedeva, E.V.
AU - Lezov, A.A.
AU - Mikhailova, M.E.
AU - Kolomiets, I.P.
AU - Mikusheva, N.G.
AU - Akhmadeeva, L.I.
AU - Kuchkina, N.V.
AU - Serkova, E.S.
AU - Shifrina, Z.B.
PY - 2017/4/1
Y1 - 2017/4/1
N2 - Hydrodynamic and optical methods were applied to study conformational and physical properties of hyperbranched pyridylphenylene polymers in dilute solutions. The samples were synthesized using Diels–Alder polycyclocondensation. It was demonstrated that hydrodynamic properties of the studied macromolecules were typical for compact non-percolated spheres. Optical and electro-optical methods revealed information regarding the shape and asymmetry of the macromolecules (p ≈ 1.4). The contributions of optical shape effect to the observed flow birefringence of polypyridylphenylene solutions and intrinsic anisotropy of polarizability were evaluated and analysed. It was shown that varying the polymer composition (i.e. the degree of branching) caused considerable changes in the anisotropy of optical polarizability of the polymers. Dramatic difference of the electro-optical properties in non-polar (toluene) and polar (tetrachloroethane) solvents was found; this difference was related to the orientational correlation of
AB - Hydrodynamic and optical methods were applied to study conformational and physical properties of hyperbranched pyridylphenylene polymers in dilute solutions. The samples were synthesized using Diels–Alder polycyclocondensation. It was demonstrated that hydrodynamic properties of the studied macromolecules were typical for compact non-percolated spheres. Optical and electro-optical methods revealed information regarding the shape and asymmetry of the macromolecules (p ≈ 1.4). The contributions of optical shape effect to the observed flow birefringence of polypyridylphenylene solutions and intrinsic anisotropy of polarizability were evaluated and analysed. It was shown that varying the polymer composition (i.e. the degree of branching) caused considerable changes in the anisotropy of optical polarizability of the polymers. Dramatic difference of the electro-optical properties in non-polar (toluene) and polar (tetrachloroethane) solvents was found; this difference was related to the orientational correlation of
U2 - 10.1002/pi.5298
DO - 10.1002/pi.5298
M3 - Article
VL - 66
SP - 583
EP - 592
JO - Polymer International
JF - Polymer International
SN - 0959-8103
IS - 4
ER -
ID: 7733435