1.
|
Aver'yanov, E. M. Mean polarizability of molecules and anisotropy of the Lorentz tensor upon a nematic-smectic a phase transition: Their behavior in a homologous series / E.M. Aver'yanov> // Russ. J. Phys. Chem. A. - 2012. - Vol. 86, Is. 5. - P. 720-728, DOI 10.1134/S0036024412050044. - Cited References: 37
. - ISSN 0036-0244РУБ Chemistry, Physical + Anisotropy + Molecules + Phase transitions + Tensors Рубрики: CHOLESTERIC LIQUID-CRYSTALS REFRACTIVE-INDEX DATA A PHASE MESOMORPHIC PROPERTIES ORIENTATIONAL ORDER OPTICAL ANISOTROPY LOCAL-FIELD POLYMORPHISM TEMPERATURE A-monotone Alkyl chain Experimental values Homologous series Homologues Limiting values Lorentz Mesophases Molecular core Molecular polarizabilities Nematic Orientational order parameters Polarizabilities Polarizability density Quadratic dependence A-monotone Smectic Smectic phase Smectic phasis Smectic-A phasis Кл.слова (ненормированные): molecular polarizability -- anisotropy -- phase transition -- nematic -- smectic -- homologues Аннотация: Experimental values of the mean polarizability of molecules, (gamma) over bar, and components of the Lorentz tensor, L-j, in the nematic and smectic A phases are obtained for a homologous series of n-alkyl-p-(4-ethoxybenzylideneamino)-alpha-methylcinnamates. Dependences of the (gamma) over bar and L-j values on the mesophase temperature, the orientational order parameter S of molecules, and the number n in the homologous series are revealed. The quadratic dependence of (gamma) over bar (S) in the nematic and smectic phases is established that is invariant with respect to the nematic-smectic A transition. Polarizability densities of the molecular core and the alkyl chain are found from the monotone decreasing dependence (gamma) over bar (n)/v (where v is volume per one molecule) in the smectic phase. The presence (or absence) of the odd-even alternation of L-j(n) in the nematic (smectic) phase is shown. A monotone decrease in the Lorentz tensor anisotropy L with an increase in n is revealed in the smectic phase, and limiting values L-j(n -> infinity) are determined.
Смотреть статью, Scopus, WoS, Читать в сети ИФ Публикация на русском языке Аверьянов, Евгений Михайлович. Изменение средней поляризуемости молекул и анизотропии тензора Лорентца при фазовом переходе нематик – смектик А и в гомологическом ряду [Текст] / Е.М. Аверьянов // Журн. физ. химии : Наука, 2012. - Т. 86 № 5. - С. 810-818
Доп.точки доступа: Аверьянов, Евгений Михайлович } Найти похожие
|