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    Anionic-cationic surfactant mixture providing the electrically controlled homeotropic surface anchoring of liquid crystals / M. N. Krakhalev [et al.] // J. Mol. Liq. - 2019. - Vol. 282: Suzdal Conference (2018, Suzdal, RUSSIA). - P. 57-62, DOI 10.1016/j.molliq.2019.02.132. - Cited References: 30. - The reported study was supported by the Belarusian Republican Foundation for Fundamental Research (project No X16P-110) and Russian Foundation for Basic Research (RFBR) (project No 16-53-00073). Mikhail N. Krakhalev and Vitaly S. Sutormin acknowledge financial support from RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science (project No 18-42-243006). . - ISSN 0167-7322. - ISSN 1873-3166
   Перевод заглавия: Смесь анионного и катионного сурфактантов, обеспечивающая электроуправляемое гомеотропное поверхностное сцепление в жидких кристаллах

РУБ Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
IONIC MODIFICATION
   TRANSITION
   DROPLETS
   CONFIGURATION
   LAYER
Кл.слова (ненормированные):
Polymer dispersed liquid crystal -- Nematic droplet -- Ionic surfactant -- Anchoring transition -- Director configuration -- Optical texture
Аннотация: In search of a substance able to function as an anionic surfactant applied for the electrically-induced anchoring transitions in liquid crystals, the compound 4-heptyloxybenzoate benzyl dodecyldimethylammonium (HOBBDDA) has been synthesized. Its orienting influence on nematic liquid crystal 4-pentyl-4'-cyanobiphenyl (5CB) has been tested. HOBBDDA dissolved up to 1.4%in 50 droplets dispersed in polymer film does not change the tangential surface anchoring inherent to polyvinyl alcohol matrix used. Homeotropic surface anchoring is realized if the HOBBDDA content exceeds 1.7%. The molecules of the surfactant in 5CB dissociate into anions and cations. The anions modify the surface anchoring under the action of DC electric field both in the normal and inverse mode. The mixture of HOBBDDA and cetyltrimethylammonium bromide can function as a binary ionic cationic surfactant which significantly expands the prospects for using the ionic-surfactant method to control liquid crystal materials. (C) 2019 Elsevier B.V. All rights reserved.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Belarusian State Technol Univ, Minsk 220006, BELARUS.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Kuz'menok, N. M.; Mikhalyonok, S. G.; Bezborodov, V. S.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Belarusian Republican Foundation for Fundamental Research [X16P-110]; Russian Foundation for Basic Research (RFBR) [16-53-00073]; RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-42-243006]; International conference on Hole Burning, Single Molecule, and Related Spectroscopies: Science and Applications - 2018(XIII ; August 6-12, 2018 ; Suzdal - Moscow, Russia)
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Aver'yanov, E. M.
Change in the polarizability of MBBA molecules upon the nematic-isotropic liquid transition and physical consequences / E. M. Aver'yanov // Phys. Solid State. - 2013. - Vol. 55, Is. 10. - P. 2136-2141, DOI 10.1134/S106378341310003X . - ISSN 1063-7834
Аннотация: The Lorentz tensor components Lj and the polarizability tensor components ?j of 4-methoxyben-zylidene-4?-butylaniline (MBBA) liquid crystal molecules in nematic and isotropic phases have been determined experimentally. The quadratic dependences of the mean value ?(S) and anisotropy ??(S) of the polarizability in the nematic phase on the orientational order parameter S of molecules have been established. Within the phenomenological approach, the dependences ?(S) and ??(S) have been derived, and their features for MBBA and other known objects have been interpreted. The relation of the dependences ?(S) and ??(S) to the features of the nematic-isotropic liquid phase transition has been found. В© 2013 Pleiades Publishing, Ltd.

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Публикация на русском языке Аверьянов, Евгений Михайлович. Изменение поляризуемости молекул МВВА при переходе нематик-изотропная жидкость и физические следствия / Е. М. Аверьянов // Физика твердого тела. - 2013. - Т. 55, вып. 10. - С. 2020-2025

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Аверьянов, Евгений Михайлович
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Aver'yanov, E. M.
Change in the polarizability of molecules at the phase transitions isotropic liquid -nematic - smectic-A - crystal-B in liquid crystal 4О.8 / E. M. Aver'yanov // 14th Eur. Conf. Liq. Cryst. (ECLC) : conf. programme / чл. нац. орг. и прогр. ком. V. Ya. Zyryanov. - 2017. - Ст. P3. - Библиогр.: . - Poster

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Материалы конференции
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Zyryanov, V. Ya. \чл. нац. орг. и прогр. ком.\; Зырянов, Виктор Яковлевич; Аверьянов, Евгений Михайлович; European Conference on Liquid Crystals(14 ; 2017 ; June ; 25-30 ; Moscow); Московский государственный университет им. М.В. Ломоносова
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Aver'yanov, E. M.
Correlation of the molecular structure of discotic nematic liquid crystals with their orientational order and specific features of the nematic-isotropic phase transition / E. M. Aver'yanov // Phys. Solid State. - 2004. - Vol. 46, Is. 8. - P. 1554-1559, DOI 10.1134/1.1788794. - Cited References: 32 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
MONTE-CARLO
   ANISOTROPIC SYSTEMS
   COMPUTER-SIMULATION
   BEHAVIOR
   TRIPHENYLENE
   DISCOGEN
   MESOGEN
   FIELD
Аннотация: The orientational order parameter S of molecules in high-temperature discotic nematic liquid-crystal phases of triphenylene derivatives is investigated as a function of the length of side flexible molecular chains at different temperatures. It is established that the orientational order parameters S in the range of the transition from the nematic phase to the isotropic liquid phase (the N-D-I transition) are smaller than those predicted from the molecular-statistical theory and computer simulation. It is shown that the N-D-I transition is close to both the isolated Landau point and the tricritical point (regardless of the chemical structure of the molecules and the anisotropy of dispersion intermolecular interactions). Consistent explanations are offered for a number of experimental findings, such as the anomalously small changes in the enthalpy and entropy upon the N-D-I transition (as compared to those revealed upon the N-I transition in calamitic nematic liquid crystals), the anomalously strong response of the isotropic phase of discotic nematic liquid crystals to external fields (thermodynamically conjugate to the order parameter S) and the long relaxation times of this response, and the formation of cybotactic discotic molecular clusters in the isotropic phase in the vicinity of the N-D-I transition. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Аверьянов, Евгений Михайлович
}
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Aver'yanov, E. M.
Fluctuations of orientational order in a uniaxial nematic liquid crystal with biaxial molecules and its response to an external field / E. M. Aver'yanov // Phys. Solid State. - 2003. - Vol. 45, Is. 5. - P. 990-1001, DOI 10.1134/1.1575350. - Cited References: 30 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITION
   SMECTIC-A
   PARTICLES
   SYSTEM
   LANDAU
   MODEL
Аннотация: Homogeneous thermal fluctuations of the orientational order parameters S and G of biaxial molecules in a uniaxial nematic liquid crystal are investigated in the framework of the molecular-statistical theory. It is demonstrated that the molecular biaxiality significantly affects the order parameters S and G, their temperature dependences in the nematic phase, the amplitude and the temperature dependence of the order parameter fluctuations in the nematic and isotropic phases, and the character of the transition from the nematic phase to the isotropic liquid phase. It is established that the fluctuations of the parameters S and G in the nematic phase are related to the temperature dependences of S and G and the susceptibilities chi(S) and chi(G) of the nematic liquid crystal to external fields, which leads to a change in the parameters S and G at a fixed director orientation. Explanations are offered for the known experimental data on the orientational ordering of biaxial molecules under the action of external fields in the isotropic phase of nematic liquid crystals. (C) 2003 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Аверьянов, Евгений Михайлович
}
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Aver'yanov, E. M.
Influence of nematic and smectic orders on polarizability of molecules of ethyl-p-(4-ethoxybenzylideneamino-)alpha-methyl cinnamate liquid crystals / E. M. Aver'yanov // Phys. Solid State. - 2013. - Vol. 55, Is. 11. - P. 2391-2396, DOI 10.1134/S1063783413110048. - Cited References: 16 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
TRANSITION
MBBA
Аннотация: Experimental values of the polarizability tensor gamma components of molecules of ethyl-p-(4-ethoxybenzylideneamino-)alpha-methyl cinnamate liquid crystals in the nematic and smectic A phases have been obtained. Quadratic dependences of the longitudinal, gamma (l) , and transverse, gamma (t) , components, the mean value , and anisotropy Delta gamma in both phases have been established as functions of the orientational order parameter S of molecules in a maximally wide range of S. The nematic-smectic A phase transition with a continuous variation of S manifests itself as kinks in the linear dependences of , Delta gamma, and gamma (l) on S (2) and does not influence the dependence gamma (t) (S (2)). The observed dependences have been derived in the framework of the theory of the nematic-smectic A phase transition. The factors responsible for different influences of the orientational and positional orderings of molecules on the polarizability parameters have been determined.

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Публикация на русском языке Аверьянов, Евгений Михайлович. Влияние нематического и смектического порядка на поляризуемость молекул жидкого кристалла этил-p-(4-этоксибензилиденамино-)α-метилциннамата / Е. М. Аверьянов // Физика твердого тела. - 2013. - Т. 55, вып. 11. - С. 2271-2275

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Аверьянов, Евгений Михайлович
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Aver'yanov, E. M.
Long-Range Orientational Order, Local-Field Anisotropy, and Mean Molecular Polarizability in Liquid Crystals / E. M. Aver'yanov // J. Exp. Theor. Phys. - 2009. - Vol. 108, Is. 1. - P. 176-186, DOI 10.1134/S106377610901021X. - Cited References: 35 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
REFRACTIVE-INDEXES
OPTICAL ANISOTROPY
Кл.слова (ненормированные):
Anisotropy -- Crystal symmetry -- Crystals -- Electric fields -- Light sources -- Liquid crystals -- Liquids -- Molecules -- Tensors -- Biaxial liquid crystals -- Calamitic -- Discotic -- Discotic liquid crystals -- Experimental datum -- Field models -- Lorentz -- Mesoscopic -- Molecular polarizability -- Orientational orders -- Phase state -- Nematic liquid crystals
Аннотация: The problems on the relation of the mean effective molecular polarizability (gamma) over bar to the long-range orientational order of molecules (the optical anisotropy of the medium) in uniaxial and biaxial liquid crystals, the local anisotropy on mesoscopic scales, and the anisotropy of the Lorentz tensor L and the local-field tensor f are formulated and solved. It is demonstrated that the presence of the long-range orientational order of molecules in liquid crystals imposes limitations from below on the molecular polarizability (gamma) over bar, which differs for uniaxial and biaxial liquid crystals. The relation between the local anisotropy and the molecular polarizability (gamma) over bar is investigated for calamitic and discotic uniaxial liquid crystals consisting of lath- and disk-shaped molecules. These liquid crystals with identical macroscopic symmetry differ in the local anisotropy and the relationships between the components L(parallel to) L(perpendicular to,) f(parallel to) > f(perpendicular to) (discotic) for an electric field oriented parallel and perpendicular to the director. The limitations from below and above on the molecular polarizability (gamma) over bar due to the anisotropy of the tensors L and f are established for liquid crystals of both types. These limitations indicate that the molecular polarizability (gamma) over bar depends on the phase state and the temperature. The factors responsible for the nonphysical consequences of the local-field models based on the approximation (gamma) over bar = const are revealed. The theoretical inferences are confirmed by the experimental data for a number of calamitic nematic liquid crystals with different values of birefringence and the discotic liquid crystal Col(ho).

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Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Аверьянов, Евгений Михайлович
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Aver'yanov, E. M.
Manifestations of the higher moments of the orientation distribution function of molecules in the spectral properties of an impurity nematic / E. M. Aver'yanov, V. G. Rumyantsev // J. Exp. Theor. Phys. - 2004. - Vol. 98, Is. 6. - P. 1146-1151, DOI 10.1134/1.1777627. - Cited References: 15 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
LIQUID-CRYSTAL
   SCATTERING
   PHASES
   MATRIX
   ORDER
   DYES
Кл.слова (ненормированные):
Absorption -- Band structure -- Impurities -- Molecular dynamics -- Polarization -- Spectrum analysis -- Distribution function -- Local field parameters -- Splitting -- Temperature dependence -- Nematic liquid crystals
Аннотация: The polarized electronic absorption spectra, orientation ordering, and the special local field features were studied for push-pull linear dye molecules with strong donor-acceptor electronic conjugation of terminal fragments in the matrix of a nematic liquid crystal. The temperature-induced inversion of the sign of the splitting of polarized impurity absorption bands was observed. This effect was shown to be caused by the statistical character of orientation ordering of impurity molecules and manifestation of the higher moments of the orientation distribution function. The dependence of local field parameters (Lorentz tensor components) of impurity molecules on their orientation ordering was established. This dependence was used to reproduce the temperature dependence of the orientation order parameter of the matrix. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Res Inst Organ Intermediates & Dyes, Dolgoprudnyi 141700, Moscow Oblast, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Research Institute of Organic Intermediates and Dyes, Dolgoprudnyi, Moscow oblast, 141700, Russian Federation

Доп.точки доступа:
Rumyantsev, V. G.; Аверьянов, Евгений Михайлович
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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 0036-0244

РУБ 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.

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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

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Аверьянов, Евгений Михайлович
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10.

Aver'yanov, E. M.
Orientational order and polarizability of molecules in a nematic liquid crystal / E. M. Aver'yanov // Phys. Solid State. - 2014. - Vol. 56, Is. 5. - P. 1058-1063, DOI 10.1134/S1063783414050035. - Cited References: 17 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
NORMAL-BUTYLANILINE MBBA
   INTERNAL-ROTATION
   TRANSITION
   PHASE
Аннотация: The influence of the orientational order of molecules in a nematic liquid crystal on the mean value ?? and anisotropy ?? of the molecular polarizability has been studied in the framework of the molecular statistical approach with allowance for the perturbation of the electronic structure of molecules due to the change in the conformation of their aromatic core and intermolecular interactions. Experimental dependences of ?? and ?? on the molecular orientational order parameter S have been derived, and their specific features for the known objects have been explained. The possibility of separating the contributions of opposite signs to the dependence ??(S) due to the change in the conformation of molecules and intermolecular interactions has been shown using nematic MBBA as an example. © 2014 Pleiades Publishing, Ltd.

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Публикация на русском языке Аверьянов, Евгений Михайлович. Ориентационный порядок и поляризуемость молекул в нематическом жидком кристалле [Текст] / Е. М. Аверьянов // Физ. тверд. тела. - 2014. - Т. 56 Вып. 5.- P.1019-1023

Доп.точки доступа:
Аверьянов, Евгений Михайлович
}
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11.

Aver'yanov, E. M.
Spectral properties of calamitic and discotic nematics, associated with the difference in their local symmetry / E. M. Aver'yanov // Journal of Optical Technology (A Translation of Opticheskii Zhurnal). - 1998. - Vol. 65, Is. 7. - P. 515-523 . - ISSN 1070-9762
Кл.слова (ненормированные):
Crystal symmetry -- Light absorption -- Light polarization -- Resonance -- Calamitic nematics -- Discotic nematics -- Nematic liquid crystals
Аннотация: This paper discusses how the features of the local symmetry of calamitic and discotic nematic liquid crystals, the orientational ordering of the molecules, the polarization of intramolecular transitions, and the resonance intermolecular interactions (local-field effects) affect the polarized absorption spectra of these objects. It is shown that the difference of the local symmetry of calamitic and discotic nematics manifests itself in observable qualitative differences in their spectral properties. The published (controversial) experimental data are explained. В© 1998 The Optical Society of America.

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Аверьянов, Евгений Михайлович
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12.

Aver'yanov, E. M.
Structural and thermodynamic consequencies of the interaction of conformational degrees of freedom of azomethines in the nematic phase / E. M. Aver'yanov // J. Struct. Chem. - 2014. - Vol. 55, Is. 4. - P. 605-611, DOI 10.1134/S0022476614040039. - Cited References: 21 . - ISSN 0022-4766. - ISSN 1573-8779

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
CONJUGATED POLY(AZOMETHINE)S
   TERMINAL SUBSTITUENTS
   ELECTRONIC-STRUCTURES
   FLUORINATED ANALOGS
   INTERNAL-ROTATION
   MOLECULES
   COMPOUND
   ANGLES
   STATE
   NMR
Кл.слова (ненормированные):
azomethines -- benzylideneaniline -- conformation -- steric effects of substituents -- nematic-isotropic liquid transition -- conformational polymorphism
Аннотация: The interaction of the conformational degrees of freedom of azomethines in the nematic phase, which is induced by electronic donor-acceptor properties of the terminal substituents of the benzylideneaniline core is studied. These degrees of freedom related to the rotation angles phi (k) around the bonds between the substituent and the aniline ring (phi(1)) and also between the CH=N bridge and the aniline ring (omega(2)) are characterized by the parameters Q (k) = aOE (c) cos(2)phi (k) >. It is found that the interaction of these degrees of freedom is manifested in the linear dependence Q (2)(Q (1)). Within the phenomenological theory the effect of this interaction on changes delta (k) in the Q (k) values during the nematic liquid crystal-isotropic liquid phase transition is revealed along with the temperature T (NI) and character of this transition. The derivation of previously established empirical dependences T (NI)(Q (k) ) is presented in the presence of direct and indirect steric effects of side substituents affecting the Q (k) values. A diverse combination of delta (k) signs in the nematic phase, which is a prerequisite for the conformational polymorphism of the nematic phases of azomethines, is shown.

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Публикация на русском языке Аверьянов, Евгений Михайлович. Структурные и термодинамические следствия взаимодействия конформационных степеней свободы азометинов [Текст] / Е. М. Аверьянов // Журн. структ. химии. - Новосибирск : Изд-во СО РАН, 2014. - Т. 55 № 4. - С. 641 - 647

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Аверьянов, Евгений Михайлович
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13.

AVERIANOV, E. M.
LONGITUDINAL SUSCEPTIBILITY OF A UNIAXIAL NEMATIC / E. M. AVERIANOV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1990. - Vol. 97, Is. 3. - P. 855-862. - Cited References: 32 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary

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14.

AVERYANOV, E. M.
CHANGE OF MOLECULE CONFORMATION AND CHARACTER OF NEMATIC-ISOTROPIC LIQUID-PHASE TRANSITION / E. M. AVERYANOV // Fiz. Tverd. Tela. - 1982. - Vol. 24, Is. 9. - P. 2839-2841. - Cited References: 15 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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15.

Averyanov, E. M.
Conformational change induced in mesomolecules by smectic a-nematic-isotropic liquid-phase transitions / E. M. Averyanov, V. A. Zhuikov, P. V. Adomenas // JETP Letters. - 1981. - Vol. 33, Is. 5. - P. 248-251. - Cited References: 11 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

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Доп.точки доступа:
Zhuikov, V. A.; Жуйков, Владимир Александрович; Adomenas, P. V.; Аверьянов, Евгений МихайловичAver'yanov
}
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16.

Averyanov, E. M.
Giant spectral response of impure nematic liquid-crystal to applied field at freedericksz transition / E. M. Averyanov, V. G. Rumyantsev, V. M. Muratov // JETP Letters. - 1990. - Vol. 51, Is. 5. - P. 320-323. - Cited References: 5 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

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Доп.точки доступа:
Rumyantsev, V. G.; Muratov, V. M.; Aver'yanov, E. M.
}
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17.

Averyanov, E. M.
New features in the structural relaxation of a nematic liquid-crystal doped with luminescent impurity molecules / E. M. Averyanov, V. A. Gunyakov // JETP Letters. - 1993. - Vol. 57, Is. 8. - P. 492-496. - Cited References: 15 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
FLUORESCENCE DEPOLARIZATION
ORIENTATIONAL RELAXATION
FLUOROPHORES
Аннотация: A new approach is proposed for interpreting the polarized fluorescence spectra of an impure liquid crystal in which the orientational order of excited impurity molecules has undergone relaxation. This approach has also been realized experimentally. The new experimental data demonstrate a new relaxation process with a time scale on the order of 10(-11)-10(-9) s.

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Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Аверьянов, Евгений МихайловичAver'yanov
}
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18.

Averyanov, E. M.
Order parameter fluctuations in nematic phase of liquid-crystal / E. M. Averyanov, V. F. Shabanov // Fiz. Tverd. Tela. - 1981. - Vol. 23, Is. 7. - P. 1917-1920. - Cited References: 16 . - ISSN 0367-3294

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Публикация на русском языке Аверьянов, Евгений Михайлович. Флуктуации параметра порядка в нематической фазе жидкого кристалла [Текст] / В. Ф. Шабанов, Е. М. Аверьянов // Физ. тверд. тела. - 1981. - Т. 23 Вып. 7. - С. 1917-1920

Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Аверьянов, Евгений Михайлович
}
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19.

AVERYANOV, E. M.
ORIENTATIONAL NEMATIC STATISTICS AND THE CHARACTER OF ITS PHASE-TRANSITION TO ISOTROPIC LIQUID / E. M. AVERYANOV // Fiz. Tverd. Tela. - 1982. - Vol. 24, Is. 1. - P. 265-268. - Cited References: 12 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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}
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20.

Averyanov, E. M.
Orientational order and critical-behavior of a discoid nematic liquid-crystal / . M. AVERYANOV // JETP Letters. - 1995. - Vol. 61, Is. 10. - P. 815-820. - Cited References: 14 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
MOLECULES
Аннотация: First experimental data on the orientational order of the molecules in a discoid nematic liquid crystal are reported. These results are dramatically at odds with the results of a numerical simulation for rigid disk-shaped molecules. The N-D-I phase transition is simultaneously close to an isolated Landau critical point and to the tricritical point, as in ordinary calamite nematic liquid crystals with Planckian molecules. This result indicates that conformational degrees of freedom of the molecule play an important role in the features of the N-D-I transition. (C) 1995 American Institute of Physics.

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Доп.точки доступа:
Аверьянов, Евгений МихайловичAver'yanov
}
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