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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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    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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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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Solvent effect in the theoretical absorption and emission spectra of fluorescein dyes / F. N. Tomilin, A. V. Rogova, E. V. Kaufman [et al.] // Proceedings of SPIE - The International Society for Optical Engineering. - 2019. - Vol. 11322: XIV International Conference on Pulsed Lasers and Laser Applications, AMPL 2019 (15-20 September 2019) Conference code: 156656. - Ст. 113220O, DOI 10.1117/12.2548739. - Cited References: 13. - This work was supported by the Russian Foundation for Basic Research, project 19-02-00450
Кл.слова (ненормированные):
fluorescein -- eosin Y -- erythrosin B -- dianion -- PCM -- time-dependent density functional theory
Аннотация: Fluorescein and its halogenated derivatives representing a family of homologous dyes with the gradual substitution of halogen atoms for hydrogen ones are widely used in biomedicine as fluorescent probes. This stimulates the intense experimental and theoretical studies of their fluorescent properties in aqueous solutions. However, the theoretical calculations are complicated by the necessity of taking into account the effect of a solvent (water) in the explicit form and the need for effective basic sets. This is especially important for the dyes that contain heavy atoms. In this study, the quantum-chemical investigations of the dianionic form of fluorescein and its Br- and I-substituted derivatives (eosin Y and erythrosin B) have been carried out using the time-dependent density functional theory (B3LYP functional) implemented in the GAMESS software suite. The effect of a solvent has been considered in the framework of the modified Thomas polarizable continuum model. The calculations have been made for vertical (absorption and emission) excitations in the adiabatic approximation and at the nonequilibrium solvation. The results obtained for the nonequilibrium solvation are in excellent agreement with the experimental data for fluorescein and its halogenated derivatives.

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Держатели документа:
Siberian Federal University, Svobodny Prospect 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Tomilin, F. N.; Томилин, Феликс Николаевич; Rogova, A. V.; Kaufman, E. V.; Drevolsky, A. S.; Gerasimova, M. A.; Slyusareva, E. A.; International Conference on Pulsed Lasers and Laser Applications(14 ; 2019 ; 15-20 Sept. ; Tomsk)
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Selective adsorption capacity of Fe3O4@C nanoparticles with respect to organic cationic dyes / O. S. Ivanova, I. S. Edelman, A. Е. Sokolov [et al.] // The Sixth Asian school-conference on physics and technology of nanostructured materials : Proceedings. - VLadivostok, 2022. - Ст. IV.p.14. - P. 231-232. - Cited References: 3 . - ISBN 987-5-8044-1716-2
Рубрики:

Аннотация: The Fe3O4 and core-shell Fe3O4@C magnetic nanoparticles (NPs) with an average size of 15 ± 2 nm were synthesized and characterized. Comparative study of two types of NPs revealed their different sorption capacity of cationic and anionic dyes. The leading role of electrostaticinteractions in the dyes adsorption by Fe3O4@C NPs has been revealed.

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS
Department of Applied Physics, National Pingtung University

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Lin, C.-R.; Chun-Rong Lin; Chen, Y. -Z.; Ying-Zhen Chen; Tseng, Y.-T.; Yaw-Teng Tseng; Asian School-Conference on Physics and Technology of Nanostructured Materials(6 ; 2022 ; Apr. 25-29 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(6 ; 2022 ; 25-29 апр. ; Владивосток)
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Quantum chemical study of the spectral characteristics of fluorescein dyes bound to chitosan / A. V. Rogova, M. A. Gerasimova, F. N. Tomilin, E. A. Slyusareva // Proc. SPIE : SPIE, 2021. - Vol. 12086: 15th International Conference on Pulsed Lasers and Laser Applications (12 - 17 September 2021, Tomsk, Russia) Conference code: 176103. - Ст. 120861V, DOI 10.1117/12.2613980. - Cited References: 17. - This study was supported by the Russian Foundation for Basic Research, project no. 19-02-00450-а and by the Ministry of Science and High Education of Russian Federation, project no. FSRZ-2020-0008
Кл.слова (ненормированные):
chitosan -- density functional theory -- eosin Y -- erythrosin B -- fluorescein -- polarizable continuum model -- time-dependent procedure
Аннотация: Recently, there has been an increased interest in natural polysaccharides, in particular, chitosan, which are widely used in medicine and industry. Chitosan labeled with fluorescein dyes acquires additional optical properties that can be used in sensing and delivery systems. Mechanism of binding of a polymer to a label largely determines the field of its possible applications. The quantum chemical calculation using the B3LYP/aug-cc-pVDZ theory level has been made in order to contribute to the understanding of intermolecular interactions. The geometry of fluorescein, eosin Y, and erythrosin B in the dianionic, monoanionic, and neutral quinoid forms interacting with chitosan has been optimized and the absorption spectra have been calculated using the time-dependent density functional theory taking into account the solvent. The comparison of the calculated absorption spectra with the experimental data has shown a major role of the electrostatic mechanism in binding of anionic dyes to the protonated chitosan groups.

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Держатели документа:
Siberian Federal University, Svobodny 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Rogova, A. V.; Gerasimova, M. A.; Tomilin, F. N.; Томилин, Феликс Николаевич; Slyusareva, E. A.; International Conference on Pulsed Lasers and Laser Applications(15 ; 2021 ; Sept. ; Tomsk, Russia)
}
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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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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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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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10.

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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