Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Electrooptical properties of poly[1-(trimethylgermyl)-1-propyne] in solutions. / Yevlampieva, N. P.; Yakimanskii, A. V.; Chirkova, M. I.; Litvinova, E. G.; Khotimskii, V. S.; Ryumtsev, E. I.
в: Polymer Science - Series A, Том 44, № 3, 01.03.2002, стр. 314-320.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Electrooptical properties of poly[1-(trimethylgermyl)-1-propyne] in solutions
AU - Yevlampieva, N. P.
AU - Yakimanskii, A. V.
AU - Chirkova, M. I.
AU - Litvinova, E. G.
AU - Khotimskii, V. S.
AU - Ryumtsev, E. I.
PY - 2002/3/1
Y1 - 2002/3/1
N2 - A sample of disubstituted poly(acetylene), poly[1-(trimethylgermyl)-1-propyne], containing, on average, 90% trans double C=C bonds was fractionated, and birefringence induced by a pulsed electric field (the Kerr effect) in dilute solutions of the as-obtained fractions was studied. It was discovered that, in the Gaussian region, fractions with similar molecular masses have different electrooptical properties. The trans chain of the polymer was analyzed by the quantum-chemical semiempirical PM-3 method, and the helix of type 41 was found to be the most optimum conformation. The presence of more polar (compared to irregular fragments) and optically anisotropic trans helical fragments with various lengths in the polymer macromolecular chains (stereoblocks) is responsible for the different electrooptical behavior of the studied fractions.
AB - A sample of disubstituted poly(acetylene), poly[1-(trimethylgermyl)-1-propyne], containing, on average, 90% trans double C=C bonds was fractionated, and birefringence induced by a pulsed electric field (the Kerr effect) in dilute solutions of the as-obtained fractions was studied. It was discovered that, in the Gaussian region, fractions with similar molecular masses have different electrooptical properties. The trans chain of the polymer was analyzed by the quantum-chemical semiempirical PM-3 method, and the helix of type 41 was found to be the most optimum conformation. The presence of more polar (compared to irregular fragments) and optically anisotropic trans helical fragments with various lengths in the polymer macromolecular chains (stereoblocks) is responsible for the different electrooptical behavior of the studied fractions.
UR - http://www.scopus.com/inward/record.url?scp=0036522521&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0036522521
VL - 44
SP - 314
EP - 320
JO - Polymer Science - Series A
JF - Polymer Science - Series A
SN - 0965-545X
IS - 3
ER -
ID: 94254181