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Nonlinear optical frequency-mixing in DYE vapors / V. F. Lukinykh [et al.] // APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY. - 1985. - Vol. 38, Is. 2. - P. 143-146, DOI 10.1007/BF00697454. - Cited References: 18 . - ISSN 0721-7269

РУБ Physics, Applied

Кл.слова (ненормированные):
42.65 -- 42.80 -- DYES AND DYEING -- LASERS, SOLID STATE - Applications -- DYE VAPORS -- NONLINEAR OPTICAL FREQUENCY-MIXING -- LIGHT

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Держатели документа:
L. V. Kirensky Institute of Physics, USSR Academy of Sciences, Siberian Branch and Krasnoyarsk University, Krasnoyarsk, SU-660036, Russia

Доп.точки доступа:
Lukinykh, V. F.; Myslivets, S. A.; Мысливец, Сергей Александрович; Popov, A. K.; Попов, Александр Кузьмич; Slabko, V. V.; Слабко, Виталий Васильевич
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Dichroic dyes in oriented PDLC films / V. A. Gunyakov, V. A. Zhuikov, V. Ya. Zyryanov [et al.] // 4th International Meeting on Optics of Liquid Crystals : abstracts. - 1991. - P. 72

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Zhuikov, V. A.; Жуйков, Владимир Александрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Smorgon, S. L.; Сморгон, Сергей Леонидович; Shabanov, V. F.; Шабанов, Василий Филиппович; International Meeting on Optics of Liquid Crystals(4 ; 1991 ; Florida, USA)
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AVERYANOV, E. M.
POLARIZED LUMINESCENCE SPECTRUM OF IMPURITY LIQUID-CRYSTAL - THE DEGENERATION LIFTED AND RENEWED BY RELAXATION / E. M. AVERYANOV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1993. - Vol. 103, Is. 6. - P. 2018-2038. - Cited References: 45 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
RESOLVED FLUORESCENCE DEPOLARIZATION
   UNIAXIAL MOLECULAR SAMPLES
   NEMATIC ORDER PARAMETERS
   EXCITED-STATES
   SPECTROSCOPY
   MEMBRANES
   FLUOROPHORES
   ORIENTATION
   TRANSITION
   DYES
Аннотация: The general molecular-statistical approach is proposed for the analysis or the polarized luminescence spectrum for impurity molecule of an arbitrary symmetry in the nematic liquid crystal matrix. On the particular example of uniaxial molecules the influence of features of the molecular electron structure, orientational statistics, molecular dynamics, and features of the anisotropic intermolecular coupling upon the positions of maxima v(if)(t) of impurity fluorescence polarized bands J(ij)(t) is studied. For the first time it is shown that all these factors significantly affect the degree of spectrum v(ij)(t) degeneration. For t not-equal 0, relaxation of excited impurity molecule subsystem toward the orientational distribution lifts a partial degeneration of spectrum v(ij), occuring at t not-equal 0, and renews partial or total degeneration of spectrum v(ij) in the limit t = infinity. In the lack of the spectrum v(ij) degeneration for t = 0 the relaxation may restore partial degeneration for t not-equal 0 as a function of the features of electron structure of molecules. The results of work explain the familiar experimental data on the number of independent component v(ij) and relation between them, on dependence of v(ij) upon the order of matrix and impurity subsystem, on the mutual relation in the positions of impurity band polarized component in the absorption and fluorescence spectra.

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AVERYANOV, E. M.
STATIONARY SPECTRUM OF ADMIXED LIQUID-CRYSTAL POLARIZED FLUORESCENCE / E. M. AVERYANOV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1994. - Vol. 106, Is. 3. - P. 767-779. - Cited References: 29 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
LOCAL FIELD
   SPECTROSCOPY
   PARAMETERS
   DYES

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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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Optical anisotropy of uniaxially oriented films of polymer-encapsulated liquid crystals / V. G. Nazarov [et al.] // J. Opt. Technol. - 2005. - Vol. 72, Is. 9. - P. 675-677, DOI 10.1364/JOT.72.000675. - Cited Reference Count: 13 . - SEP. - ISSN 1070-9762
Кл.слова (ненормированные):
Dichroic dyes -- Laser radiation -- Optical anisotropy -- Uniaxially oriented films -- Anisotropy -- Density (optical) -- Dyes -- Helium neon lasers -- Light polarization -- Light scattering -- Light transmission -- Liquid crystal polymers -- Optical films
Аннотация: Uniaxially oriented films of polymer-encapsulated liquid crystals (PELCs) possess strong light-scattering anisotropy. The macroscopic transmittance anisotropy in uniaxially oriented PELC films can be strengthened by adding dichroic dyes to the LC drops. The ratio T-perpendicular to/T-parallel to of the principal components of the optical transmittance polarized perpendicular and parallel to the orientation of the PELCs, respectively, has been measured for He-Ne laser radiation transmitted through uniaxially oriented samples. The experiments showed that the transmittance anisotropy T-perpendicular to/T-parallel to for samples doped with dye is greater than the anisotropy caused only by light scattering. (c) 2005 Optical Society of America.

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Оригинал на русском языке

Держатели документа:
Krasnoyarsk State Technical University, Krasnoyarsk, Russian Federation
L V. Kirenskii Institute of Physics, Siberian Section, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nazarov, V. G.; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Parshin, A. M.; Паршин, Александр Михайлович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; International Seminar on Display Optics(1 ; OCT 18-20, 2004 ; St Petersburg, RUSSIA)
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Inverse mode of ion-surfactant method of director reorientation inside nematic droplets / M. N. Krakhalev, O. O. Prishchepa, V. Y. Zyryanov // Mol. Cryst. Liquid Cryst. - 2009. - Vol. 512, Is. 1. - P. 1998-2003, DOI 10.1080/15421400903050814. - Cited Reference Count: 8. - Гранты: This work was partially supported by the grants Nos. NSh-3818.2008.3; 02.740.11.0220, and No. 08-03-01007 of RFBR, and Nos. 27.1; 110; 144 of SB RAS. M. Krakhalev acknowledges the financial support from K. I. Zamaraev MBN Foundation. O. Prishchepa acknowledges the financial support from Russian Science Support Foundation. - Финансирующая организация: RFBR [NSh-3818.2008.3, 02.740.11.0220, 08-03-01007]; SB RAS [27.1; 110; 144]; Zamaraev MBN Foundation; Russian Science Support Foundation . - ISSN 1542-1406
Кл.слова (ненормированные):
electrically commanded surfaces -- ion surfactant -- nematic -- polymer dispersed liquid crystals -- surface anchoring -- Electrically commanded surfaces -- Ion surfactant -- Nematic -- Polymer dispersed liquid crystals -- Surface anchoring -- Applied voltages -- Crossed polarizers -- Director fields -- Director reorientation -- Droplet structure -- Electrically commanded surfaces -- High concentration -- Homeotropic -- Initial state -- Ionic modification -- Liquid-crystal droplets -- Nematic droplets -- Nematic polymer -- Surface-active cations -- Surface-anchoring -- Trimethyl -- Ammonium compounds -- Cationic surfactants -- Crystals -- Drop formation -- Dyes -- Ionization of liquids -- Ions -- Liquid crystal displays -- Liquid crystals -- Liquids -- Nematic liquid crystals
Аннотация: Inverse mode of a novel electrooptical effect caused by the ionic modification of boundary conditions has been studied for liquid crystal droplets. We have considered the droplets of nematic 5CB doped with cationic surfactant cetyl-trimethyl-ammonium-bromide and dispersed in polyvinyl alcohol. In the initial state the surface anchoring was normal on the whole interface due to the high concentration of homeotropic surfactant. Applied voltage results in the purification of a section of the interface from the surface-active cations thereby restoring here a tangential anchoring and stimulating the significant transformation of droplet structure. At that three different types of director field distribution can be realized within the same droplet. The proper textures of the droplet both in the crossed polarizers and without analyzer are considered.

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Держатели документа:
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia
Siberian Fed Univ, Krasnoyarsk, Russia

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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The effect of halogen substitution on the structure and electronic spectra of fluorone dyes / E. A. Slyusareva [et al.] // Opt. Spectrosc. - 2012. - Vol. 112, Is. 5. - P. 671-678, DOI 10.1134/S0030400X12040194. - Cited References: 44. - This work was supported by the FTsP Kadry GK-P333 and by the Siberian Branch of the Russian Academy of Sciences (Integration project no. 2). We are grateful to the Joint Supercomputer Center of the Russian Academy of Sciences (Moscow) and to the Complex of High-Performance Computations of the IKIT of Siberian Federal University. E. A. Slyusareva acknowledges support from the German Academic Exchange Service and the Ministry of Education and Science of the Russian Federation (the program "Mikhail Lomonosov II") of scientific research at the University of Regensburg and in the Helmholtz Center in Berlin (Germany). . - ISSN 0030-400X

РУБ Optics + Spectroscopy
Рубрики:
POLARIZABLE CONTINUUM MODEL
   BORIC-ACID GLASS
   XANTHENE DYES
   FLUORESCEIN DERIVATIVES
   DELAYED FLUORESCENCE
   EOSIN-Y
   ABSORPTION
   PHOSPHORESCENCE
   TRANSITIONS
   EXCITATION
Аннотация: By means of the B3LYP density functional method with the use of the polarized continuum model PCM, we have performed quantum-chemical computations of the electronic absorption and fluorescence spectra of fluorone dianions: fluorescein, dibromofluorescein, eosin, erythrosine, and Rose Bengal in vacuum and methanol. We have revealed conformational features of the structure of fluorone dianions (charge redistribution, changes in the bond lengths and angles between bonds) second by the halogen substitution, the transition from the ground state to an excited state, and the change of the solvent (vacuum-methanol). Absorption and fluorescence wavelengths, constant dipole moments, transition dipole moments, and oscillator strengths have been calculated. We have showed that, upon halogenation of fluorones, the absorption spectra are redshifted and the Stokes shift decreases, which is qualitatively consistent with experimental results.

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Публикация на русском языке Влияние галогензамещения на структуру и электронные спектры флуороновых красителей [Текст] / Е. А. Слюсарева [и др.] // Оптика и спектроскопия : Наука, 2012. - Т. 112 № 5. - С. 729-737

Держатели документа:
[Slyusareva, E. A.
Tomilin, F. N.
Sizykh, A. G.
Tankevich, E. Yu.
Kuzubov, A. A.
Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Tomilin, F. N.
Ovchinnikov, S. G.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Slyusareva, E. A.; Tomilin, F. N.; Томилин, Феликс Николаевич; Sizykh, A. G.; Tankevich, E. Y.; Kuzubov, A. A.; Кузубов, Александр Александрович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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Laser photolysis of fluorone dyes in a chitosan matrix / E. A. Slyusareva [et al.] // Quantum Electron. - 2012. - Vol. 42, Is. 8. - P. 687-692, DOI 10.1070/QE2012v042n08ABEH014860. - Cited References: 32 . - ISSN 1063-7818

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
POLY(VINYL ALCOHOL) MATRIX
   XANTHENE DYES
   ROSE-BENGAL
   FLUORESCENCE PROPERTIES
   DELAYED FLUORESCENCE
   ORGANIC-MOLECULES
   TRIPLET-STATE
   EXCITATION
   ABSORPTION
   PHOSPHORESCENCE
Кл.слова (ненормированные):
laser photolysis -- fluorescein -- dibromofluorescein -- eosin Y -- erythrosin B -- Rose Bengal -- chitosan -- photobleaching kinetics -- two-step absorption
Аннотация: Kinetics of laser-induced photobleaching of fluorone dyes (fluorescein, dibromofluorescein, eosin Y, erythrosin B, Rose Bengal) is studied in a chitosan matrix. For all dyes the bleaching kinetics at the intensities of laser radiation 0.7 — 11.9 W cm-2 demonstrates quasi-monomolecular behaviour. The results are analysed using a kinetic model, based on the four-level (S0, S1, T1, Tn) scheme of the dye with chemically active triplet states taken into account. It is shown that the rate constants of the chemical reaction involving higher triplet states in the dyes studied amount to (3.9 — 18.6) × 106 s-1 and exceed the analogous values for the reaction involving the first lower triplet states by nine orders of magnitude. The rate of reaction involving the first triplet states appeared to be higher by one — two orders of magnitude than that in the case of higher triplet states involved because of low population of the latter. The possible mechanism of dye bleaching with participation of chitosan that consists in reduction of the dye to the leuco form by transfer of hydrogen from the chitosan matrix is discussed.

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Публикация на русском языке Лазерный фотолиз флуороновых красителей в хитозановой матрице [Текст] / Е. А. Слюсарева [и др.] // Квант. электроника : Физический институт им. П.Н.Лебедева РАН, 2012. - Т. 42 № 8. - С. 687-692

Держатели документа:
[Slyusareva, E. A.
Sizykh, A. G.
Gerasimova, M. A.
Slabko, V. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Myslivets, S. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Slyusareva, E. A.; Sizykh, A. G.; Gerasimova, M. A.; Slabko, V. V.; Слабко, Виталий Васильевич; Myslivets, S. A.; Мысливец, Сергей Александрович
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10.

    Synthesis, luminescent properties and theoretical calculations of novel orange-red-emitting Ca2Y8(SiO4)6O2:Sm3+ phosphors for white light-emitting diodes / C. -T. Chen [et al.] // Dyes Pigm. - 2018. - Vol. 150. - P. 121-129, DOI 10.1016/j.dyepig.2017.10.047. - Cited References: 61. - This research was supported by Minister of Science and Technology under contract no. MOST 105-2622-E-033-003-CC2 and MOST 104-2628-E-033-002-MY3. . - ISSN 0143-7208
   Перевод заглавия: Синтез, люминесцентные свойства и теоретические вычисления нового оранжево-красного люминофора Ca2Y8(SiO4)6O2:Sm3+ для белых светодиодов
Кл.слова (ненормированные):
Ca2Y8(SiO4)6O2 -- Photoluminescence -- Phosphor -- Solid state reaction
Аннотация: The novel orange-red-emitting Ca2Y8(SiO4)6O2:Sm3+ phosphors (CYSO:Sm3+) were synthesized via conventional a solid state reaction. The crystal structure and atomic coordinates of CYSO:Sm3+ was characterized by Rietveld refinement. Luminesce properties of as-synthesized CYSO:Sm3+ phosphors are carried out by PL/PLE, decay life time, thermal quenching as well as reflectance spectrometer and LED fabrications. The results indicates that composition-optimized CYSO:1%Sm3+ exhibits orange-red emission peaks located on 564, 601, 608 and 648 nm attributed to the transitions of 4G5/2 → 6H5/2, 4G5/2 → 6H7/2, 4G5/2 → 6H7/2 and 4G5/2 → 6H9/2, respectively. The decay lifetime of CYSO:Sm3+ phosphors was in the range of 0.37–1.10 ms. The temperature-dependent photoluminescence is decreased to 80% from room temperature to 150 °C, which is superior to that of commercial red phsophpr-Y2O3:Eu3+. The results of LED fabrication by combing 405 chips and blue/green phosphors are demonstrated in this study. Finally, from viewpoint of theoretical calculations, band structure and density of state for CYSO and CYSO:Sm3+ are studied by first principles calculations. All the results indicate that CYSO:Sm3+ phosphors could be a potential material for white light-emitting diodes.

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Держатели документа:
Department of Chemical Engineering, Chung Yuan Christian University, Chung Li, Taiwan
National Chung Shan Institute of Science & Technology, Taoyuan, Taiwan
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Chen, C. -T.; Lin, T. -J.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Liu, W. -R.
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