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Общее количество найденных документов : 19
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Вид документа : Статья из журнала
Шифр издания : 54
Автор(ы) : Lipunova G. N., Nosova E. V., Charushin V. N., Chupakhin O. N.
Заглавие : Boron(III) Complexes with N,N'- and N,O-Heterocyclic Ligands: Synthesis and Spectroscopic Properties
Место публикации : Comments on Inorganic Chemistry. - 2016. - Vol. 2016. - С. 1153470
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): properties --preparation-- synthetic preparation
Аннотация: This review is focused on consideration of effects of the nature of N,N'- and N,O-bidentate ligands on the structure and optical properties of their B(III) complexes. It has been established that B(III) complexes with asym. N,N'- and N,O-bidentate ligands, such as ortho-hydroxyphenyl substituted azaheterocycles and heteryl-β-ketoimines, exhibit large Stokes shifts, enhanced intensity, and extended range for luminescence in solns. as well as in solid state, comparable with characteristics of the family of BODIPYs derivs. Complexes of some bidentate ligands can be considered as promising fluorophores for applications in biomedical imaging, electroluminescent, solar cell devices, and other fields.
\\\\expert2\\nbo\\Comments on Inorganic Chemistry\\2016. P. 1153470.pdf
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Вид документа : Статья из журнала
Шифр издания : 54
Автор(ы) : Prokhorov A. M., Kozhevnikov V. N., Kopchuk D. S., Kozhevnikov D. N.
Заглавие : 1,2,4-Triazine method of bipyridine ligand synthesis for the preparation of new luminescent Eu(III) complexes
Место публикации : Tetrahedron. - 2011. - Vol. 67, № 3. - С. 597-607
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The ‘triazine’ methodology for the synthesis of functionalised bipyridine ligands proved to be a convenient method for the preparation of luminescent Eu(III) complexes. The approach allows flexible construction of chromophore and coordination sphere with control of photophysical properties. Europium (III) complexes [Eu1]-[Eu5] prepared in this way exhibit intense long-life metal-centered luminescence in aqueous media. The aromatic substituent in the position 5 of bipyridine has a significant influence on luminescence parameters and is used to introduce functionality for bioconjugation. The complexes [Eu4] and [Eu5] bearing primary amine groups are ready-to-go luminescent ‘tags’ for peptide labeling
\\\\Expert2\\nbo\\Tetrahedron\\2011, v. 67, p. 597.pdf
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Taniya O. S., Fedotov V. V., Sadieva L. K., Krinochkin A. P., Kovalev I. S., Kopchuk D. S., Zyryanov G. V., Ulomsky E. N., Rusinov V. L., Charushin V. N., Novikov A. S., Liu Y.
Заглавие : Abnormal push-pull benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores in planarized intramolecular charge transfer (PLICT) state: Synthesis, photophysical studies and theoretical calculations
Место публикации : Dyes and Pigments. - 2022. - Vol. 204. - Ст.110405
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The combination of excellent luminescence with high solvent polarity effect and aggregation induced emission (AIE) is an ideal combination for creating fluorophores/probes with high microenvironmental sensitivity. However, many push-pull chromophores of the D−A type in common intramolecular charge transfer (ICT) state with a significant solvatochromic effect and AIE activity, have poor luminescent properties. Herein, to overcome this problem by using reactions of nucleophilic aromatic hydrogen substitution (SNH), we have designed a series of novel 4-heteroaryl-substituted 2-aryl-2H-benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores possessing a planarized intramolecular charge transfer (PLICT) state. All these fluorophores exhibited high luminescence quantum yields (up to 60%) and large Stokes shift values of up to 7459 cm−1. Among them, the fluorophore 4h was found to exhibit the most pronounced positive solvatochromic effect and the probe 4f exhibited the most pronounced aggregation induced emission characteristics. This AIE behavior was further confirmed by means of time-resolved fluorescence lifetime measurements as well as DFT-assisted geometry optimization studies. In the presence of trifluoroacetic acid (TFA) compound 4h exhibited a well-pronounced acidochromism via visible color change from yellow-green to orange which returned to the original yellow-green solution after the addition of triethylamine (TEA). The Stern-Volmer constant for the probe 4h towards TFA was 38 M−1. Finally, for the compounds 4f, g, h theoretical calculations in the ground and excited states in different solvents were carried out to confirm the PLICT process. Based on all above the herein reported PLICT fluorophores 4a-h can be successfully applied as biological probes and optical switches.
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Вид документа : Статья из журнала
Шифр издания : 54/C 52
Автор(ы) : Bulygina L.A., Starikova Z. A., Babievskii K.K., Utepova I. A., Rusinov V. L., Chupakhin O. N., Sokolov V. I.
Заглавие : Chiroptical properties and new derivatives of cyclopalladated 6-ferrocenyl-2,2-bipyridine. Molecular structure of a tert-butyl isocyanide derivative [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 10. - С. 2214-2216
Систем. требования: http://www.springerlink.com/content/c16660p1365277wn/fulltext.pdf
Примечания : 27.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Optically active cyclopalladated 6-ferrocenyl-2,2?-bipyridine has been studied by circular dichroism and luminescent spectroscopy; a replacement of the chloride ion at palladium with the rhodanide ion and tert-butyl isocyanide molecule has been carried out; molecular structure of the product in the latter case has been determined by X-ray diffraction analysis
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (10), 2214-2216.pdf
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Вид документа : Статья из журнала
Шифр издания : 54/C 91
Автор(ы) : Khamidullina L. A., Obydennov K. L., Slepukhin P. A., Puzyrev I. S.
Заглавие : Crystal structure, spectral and thermal properties of 1,2-bis[2-(4,4,4-trifluoro-1-hydroxy-3-oxobut-1-enyl)phenoxy]-ethane and luminescent properties of its complexes with Al(III) and Eu(III) [Электронный ресурс]
Место публикации : Journal of Molecular Structure. - 2016. - Vol. 1125. - С. 550-557
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 01.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): lanthanide complexes --enol-tautomerism--beta-diketones
Аннотация: Describing the crystal structure, packing, FT-IR, UV-Vis and NMR spectra and thermal properties of new polydentate O-ligand based on aryl-beta-diketone moieties connected by ethylene glycol spacer is the subject of this article. The results of IR, UV-Vis and H-1 NMR spectroscopy as well X-ray crystallography of 1,2-bis[2-(4,4,4-trifluoro-1-hydroxy-3-oxobut-1-enyl)phenoxy]-ethane (BTFPE) indicate that the compound exists in solution and in solid as enol. The crystal structure analysis shows that BTFPE has C2/c group of the monoclinic system. Typical S(6) intramolecular hydrogen bond occurs in each 1,3-diketo moiety. This bond is asymmetric and the H atom is closest to the 0 atom adjacent to the phenyl ring. The packing of the crystal is sustained by numerous C-H center dot center dot center dot O, O-H center dot center dot center dot F, C-H center dot center dot center dot F interactions. In the crystal, supramolecular zig-zag chains are formed along the c-axis. Short contacts interconnect the molecules into a two-dimensional layered structure wherein each molecule is node between chains. According to the thermal investigation this compound is stable up to 200 degrees C in air atmosphere, above this temperature it decomposes. Photoluminescent properties of aluminum(III) and europium(III) complexes of BTFPE were evaluated in chloroform solution and in the solid state. Aluminum complex of BTFPE shows blue luminescence with maximum at 445 nm. Europium complex exhibits intense red color luminescence at 613 nm from central Eu(III) ion through the excitation of the ligand.
\\\\expert2\\NBO\\Journal of Molecular Structure\\2016, v.1125, p.550-557.pdf
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Вид документа : Статья из журнала
Шифр издания : 54/F 12
Автор(ы) : Kozhevnikov V. N., Shabunina O. V., Kopchuk D. S., Ustinova M. M., Konig B., Kozhevnikov D. N.
Заглавие : Facile Synthesis of 6-aryl-3-pyridyl-1,2,4-triazines as a key step towards hightly fluorescent 5-substituted bipyridines and their Zn(II) and Ru(II) complexes
Место публикации : Tetrahedron. - 2008. - Vol. 64, № 37. - С. 8963-8973: рис., табл. - ISSN 0040-4020. - ISSN 0040-4020
Примечания : Библиогр. : с. 8973 (21 назв.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A wide series of substituted bipyridines were obtained through the synthesis of 1,2,4-triazines and their aza Diels–Alder reactions. The reported method facilitates the synthesis of functionally diverse bipyridines that provides fine-tuning of photophysical properties of new ligands and their Zn(II) and Ru(II) complexes. Some of substituted bipyridines exhibit ‘off–on’ fluorescence response toward Zn2+ cations.????
\\\\Expert2\\nbo\\Tetrahedron\\2008, v. 64, N37, p. 8963.pdf
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Вид документа : Статья из журнала
Шифр издания : 54/F 97
Автор(ы) : Kopchuk D. S., Khasanov A. F., Kim G. A., Nosova E. V., Zyryanov G. V., Kovalev I. S., Rusinov V. L., Chupakhin O. N.
Заглавие : Functionalized 2-(5-arylpyridin-2-yl)quinolines: synthesis and photophysical properties [Электронный ресурс]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - Vol. 64, № 4. - С. 872-877
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 877 (36 ref.). - 20.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2-(pyridin-2-yl)quinolines--heterocyclization-- luminescence
Аннотация: An efficient approach to the synthesis of 2-(5-arylpyridin-2-yl)quinolines containing fluorine atoms and a cyclopentene fragment was suggested. Photophysical properties of new compounds were studied and compared to those of the earlier described compounds without such functional groups
\\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 64 (4), 872-877.pdf
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Вид документа : Статья из журнала
Шифр издания : 54/L 96
Автор(ы) : Zubkov V.G., Leonidov I.I., Tarakina N.V., Koryakova O. V.
Заглавие : Luminescence in Ln2CaGe4O12 under infrared laser excitation
Место публикации : Journal of Luminescence. - 2009. - Vol. 129, № 12. - С. 1625-1628
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Luminescent properties of the new group of crystalline optical materials Ln2CaGe4O12, Ln=Dy, Ho, Er, Tm, Yb were studied under laser excitation at ?=976 nm in the stationary mode. Er2CaGe4O12, Ho2CaGe4O12 and also the solid solution LnxY2-xCaGe4O12 (0?x?2) may be used in photonics as optical elements, such as converters and resonance amplifiers????
\\\\Expert2\\nbo\\Journal of Luminescence\\2009, v. 129, p.1625.pdf
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Вид документа : Статья из журнала
Шифр издания : 54/L 96
Автор(ы) : Pechishcheva N.V., Osintseva E. V., Neudachina L.K., Leontev L.I., Yatluk Yu. G., Shunyaev K.Yu., Vshivkov A.A.
Заглавие : Luminescence properties of some N-aryl-3-aminopropionic acids and their use for determination of copper(II) in drinking and waste water
Место публикации : Doklady Chemistry. - 2006. - Vol. 408, № 1. - С. 65-69
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/L 96
Автор(ы) : Kozhevnikov D. N., Kopchuk D. S., Shafikov M. Z., Prokhorov A. M.
Заглавие : Luminescent metallocomplexes of functionalized pyridines : from ligand design towards special properties : доклад, тезисы доклада
Место публикации : International conference "Topical Problems of Organometallic and Coordination Chemistry", V Razuvaev lectures, N. Novgorod, September 3-9 2010 : book of abstracts . - Nizhny Novgorod, 2010. - С. S13: рис.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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11.

Вид документа : Статья из журнала
Шифр издания : 54/P 58
Автор(ы) : Kozhevnikov D. N., Kozhevnikov V. N., Shafikov M. Z., Prokhorov A. M., Bruce D.W., J. A. Gareth Williams
Заглавие : Phosphorescence vs Fluorescence in Cyclometalated Platinum(II) and Iridium(III) Complexes of (Oligo)thienylpyridines
Место публикации : Inorganic Chemistry . - 2011. - Vol. 50, № 8. - С. 3804-3815
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): oligothienylpyridines--ligands--luminescence properties
Аннотация: Two newly prepared oligothienylpyridines, 5-(2-pyridyl)-5?-dodecyl-2,2?-bithiophene, HL2, and 5-(2-pyridyl)-5??-dodecyl-2,2?:5?,2??-ter-thiophene, HL3, bind to platinum(II) and iridium(III) as NC-coordinating ligands, cyclometallating at position C4 in the thiophene ring adjacent to the pyridine, leaving a chain of either one or two pendent thiophenes. The synthesis of complexes of the form [PtLn(acac)] and [Ir(Ln)2(acac)] (n = 2 or 3) is described. The absorption and luminescence properties of these four new complexes are compared with the behavior of the known complexes [PtL1(acac)] and [Ir(L1)2(acac)] {HL1 = 2-(2-thienyl)pyridine}, and the profound differences in behavior are interpreted with the aid of time-dependent density functional theory (TD-DFT) calculations. Whereas [PtL1(acac)] displays solely intense phosphorescence from a triplet state of mixed ??*/MLCT character, the phosphorescence of [PtL2(acac)] and [PtL3(acac)] is weak, strongly red shifted, and accompanied by higher-energy fluorescence. TD-DFT reveals that this difference is probably due to the metal character in the lowest-energy excited states being strongly attenuated upon introduction of the additional thienyl rings, such that the spin?orbit coupling effect of the metal in promoting intersystem crossing is reduced. A similar pattern of behavior is observed for the iridium complexes, except that the changeover to dual emission is delayed to the terthiophene complex [Ir(L3)2(acac)], reflecting the higher degree of metal character in the frontier orbitals of the iridium complexes than their platinum counterparts.??
\\\\Expert2\\nbo\\Inorganic Chemistry\\2011, v.50, p.3804.pdf
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12.

Вид документа :
Шифр издания :
Автор(ы) : Kudyakova Y. S., Slepukhin P. A., Valova M. S., Burgart Y. V., Saloutin V. I., Bazhin D. N.
Заглавие : Role of alkyl substituents in the structure and luminescence properties of discrete terbium(III)-lithium(I) Β-diketonates
Место публикации : Journal of molecular structure. - 2021. - Vol. 1226. - С. 129331
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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13.

Вид документа : Статья из журнала
Шифр издания : 54/S 89
Автор(ы) : Krasil'nikov V. N., Gyrdasova O. I., Baklanova I. V., Perelyaeva L. A., Zhilina E. F., Vovkotrub E. G.
Заглавие : Structure and luminescence properties of nanostructured solid-state solutions of Sc 1-xEu x(CH 3CO 2) 3
Место публикации : Theoretical and Experimental Chemistry . - 2012. - Vol.48, №2. - С. 113-117
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): emission spectra--ir and raman spectra-- precursor synthesis methods
Аннотация: Nanosized solid-state solutions of Sc 1-xEu x(CH 3CO 2) 3 (x = 0.01-0.1) have been obtained and their morphology, structure, vibrational and luminescence properties studied. The experimental IR and Raman spectra are in accord with the structures assigned to these compounds. A spectroscopic study showed that scandium acetate doped with 10 at.% Eu 3+ holds interest as a potential luminescent material active in the visible spectrum. Solid-state solutions of Sc 1-xEu x(CH 3CO 2) 3 can be used as precursors for obtaining nanosized oxides Sc 2-2xEu 2xO 3 with specified particle morphology
\\\\Expert2\\NBO\\Theoretical and Experimental Chemistry\\2012, V.48, № 2, p.113.pdf
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14.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Melkozerov S. A., Pervova I. G., Lipunova G. N., Barachevskii V. A., Lipunov I. N., Dvoskin E. A.
Заглавие : Synthesis and photoluminescence properties of zinc(II) complexes with salicylaldehyde hetarylhydrazones [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2013. - Vol.83, №4. - С. 646-651
Систем. требования: http://download.springer.com/static/pdf/283/art%253A10.1134%252FS1070363213040063.pdf?auth66=1396079960_90049c4911b2a624fd81c2555bebb6cb&ext=.pdf
Примечания : Bibliogr. : p. 651 (13 ref.). - 27.03.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): zinc(ii) complexes--salicylaldehyde benzazolyl--pyrimidinylhydrazones
Аннотация: New zinc complexes of the salicylaldehyde benzazolyl- and pyrimidinylhydrazones were synthesized. Study of photophysical properties of the hydrazones and their complexes in solution showed that their structure and the luminescence intensities depend on the nature of the heterocyclic fragment included to the molecule
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2013, V. 83, N 4, p. 646–651.pdf
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15.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Nosova E. V., Moshkina T. N., Lipunova G. N., Kopchuk D. S., Slepukhin P. A., Baklanova I. V., Charushin V. N.
Заглавие : Synthesis and Photophysical Studies of 2-(Thiophen-2-yl)-4-(morpholin-4-yl) quinazoline Derivatives [Электронный ресурс]
Место публикации : European Journal of Organic Chemistry. - 2016. - № 16. - С. 2876-2881
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 26.10.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): photophysics --charge transfe--fluorescence
Аннотация: The synthesis of a series of push-pull aryl and arylethynyl 2-(thiophen-2-yl) quinazoline derivatives is presented. The photophysical properties of the newly generated compounds are also described. Functionalization of the (2-thienyl) quinazoline fluorophore at the 5'-position with aryl and arylethynyl moieties was performed using bromination and subsequent palladium-catalyzed cross-coupling reactions. Optical studies revealed that 4-(diethylamino) phenyl and 4-(diphen-ylamino) phenyl derivatives emit green light upon irradiation, whereas their 4-(9H-carbazol-9-yl) phenyl, methoxyphenyl, thienyl and arylethynyl counterparts are characterized by blue light emission capabilities. The effect of protonation has also been studied, and the ability of some of these molecules to function as colorimetric and luminescent pH sensors has been demonstrated with significant color changes and luminescence switching upon the introduction of acid.
\\\\expert2\\NBO\\European Journal of Organic Chemistry\\2016, №16. p.2876-2881.pdf
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16.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Kozhevnikov D. N., Kozhevnikov V. N., Ustinova M. M., Santoro A., Bruce D.W., Koenig B., Fisher T., Zabel M., Yersin H.
Заглавие : Synthesis of cyclometallated platinum complexes with substituted thienylpyridines and detailed characterization of their luminescence properties
Место публикации : Inorganic Chemistry . - 2009. - Vol. 48, № 9. - С. 4179-4189
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Synthesis of various derivatives of 2-(2-thienyl)pyridine via substituted 3-thienyl-1,2,4-triazines is reported. The final step of the synthesis is a transformation of the triazine ring to pyridine in an aza-Diels-Alder-type reaction. The resulting 5-aryl-2-(2-thienyl)pyridines (HL1-HL4) and 5-aryl-2-(2-thienyl)cyclopenteno[c]pyridines (HL5-HL8) (with aryl = phenyl, 4-methoxyphenyl, 2-naphtyl, and 2-thienyl) were used as cyclometallating ligands to prepare a series of eight luminescent platinum complexes of the type [Pt(L)(acac)] (L = cyclometallating ligand, acac = acetylacetonato). X-ray single crystal structures of three complexes of that series, [Pt(L5)(acac)] = [Pt(5-phenyl- 2-(2-thienyl)cyclopenteno[c]pyridine)(acac)], [Pt(L6)(acac)] = [Pt(5-(4-methoxy)-2-(2-thienyl)cyclopenteno[c]py- ridine)(acac)], and [Pt(L7)(acac)] = [Pt(5-(2-naphtyl)-2-(2-thienyl) cyclopenteno[c]pyridine)(acac)] were determined. Photoluminescence and electronic absorption spectra of the new [Pt(L)(acac)] complexes are reported. For two representative compounds of that series, [Pt(L4)(acac)] and [Pt(L5)(acac)], a detailed photophysical characterization based on highly resolved emission and excitation spectra, as well as on emission decay properties, was carried out. The studies down to low temperature (T = 1.2 K) and up to high magnetic fields (6 = 10 T) allowed us to characterize the three individual substates of the emitting triplet state. In particular, it is shown that the lowest triplet states of [Pt(L4)(acac)] and [Pt(L5)(acac)] are largely ligand-centered (LC) of3jtjt*character, which experience only weak spin- orbit couplings to higher lying singlet states
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17.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Ovchinnikova I. G., Kim G. A., Matochkina E. G., Kodess M. I., Barykin N. V., Eltsov O. S., Nosova E. V., Rusinov G. L., Charushin V. N.
Заглавие : Synthesis, photochemical and luminescent properties of (E)-2-(2-hydroxyarylethylene)-3-phenylquinazolin-4(3H)-ones [Электронный ресурс]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - Vol. 63, № 11. - С. 2467-2477
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 2477 (22 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): (e)-2-styrylquinazolin-4(3h)-ones --luminescence--ortho-hydroxystyrylquinazolinones
Аннотация: Photoinduced transformations of 2-styrylquinazolinones in solutions were studied using absorption and NMR spectroscopy methods. A possibility of control of the photochemical isomerization rate of quinazolinone 2-(hydroxyaryl)ethenyl derivatives by changing the pH of the medium was demonstrated. The bases and the solvent nature also affect the luminescence intensity of solutions of these compounds in the wavelength range of 550-650 nm. The differences in the steric organization of the ortho-hydroxystyryldiazinone system in crystals and in solutions related to the turn of the aryl group were found. Their influence on the competing processes of luminescence and photochemical transformation of the ethylene fragment were shown. The fact of reversible photo/thermal E-Z-isomerization was established for (E)-2-(2-hydroxystyryl)-3-phenylquinazolin-4(3H)-one.
\\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 63 (11), 2467-2477.pdf
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18.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Kozhevnikov V. N., Kozhevnikov D. N., Shabunina O. V., Rusinov V. L., Chupakhin O. N., Zabel M., Koenig B.
Заглавие : Synthesis, structure and luminescence of ruthenium complexes with 6-cyano-2,2'-bipyridines [Electronic resource]
Место публикации : Mendeleev Communications. - 2005. - Vol. 15, № 1. - С. 6-8
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0959943605701590
Примечания : 11.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The crystallographic data, NMR and UV-VIS spectra and luminescence of the heteroleptic complexes [Ru(L)(bpy)2](PF6)2 (L = 5-aryl-6-cyano-2,2'-bipyridine) are described.
\\\\Expert2\\nbo\\Mendeleev Communications\\2005, v.15,p.6.pdf
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19.

Вид документа : Статья из журнала
Шифр издания : 54/U 67
Автор(ы) : Leonidov I.I., Zubkov V.G., Tyutyunnik A. P., Tarakina N. V., Surat L. L., Koryakova O. V., Vovkotrub E. G.
Заглавие : Upconversion luminescence in Er3+/Yb3+ codoped Y2CaGe4O12 [Electronic resource]
Место публикации : Journal of Alloys and Compounds. - 2011. - Vol. 509, № 5. - С. 1339-1346
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0925838810025600
Примечания : Bibliogr. : p. 1345-1346 (52 ref.) . - 13.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Calcium yttrium tetrametagermanates Y2CaGe4O12 doped with Er3+ and Er3+/Yb3+ reveal upconversion emission in visible spectral range under near-infrared excitation, ex = 980 nm. For the solid solution ErxY2?xCaGe4O12 concentration dependencies for the green and red lines of the visible emission around 526 nm (2H11/2 4I15/2), 545 nm (4S3/2 4I15/2) and 670 nm (4F9/2 4I15/2) show the optimal value for the sample x = 0.2. The power dependence of the visible luminescence measured at room temperature in the low-power limit indicates two-photon upconversion process. Direct intensification of the upconversion emission signals has been achieved by ytterbium sensitizing. The other upconversion excitation mechanism in Y2CaGe4O12:Er3+ is discussed for an 808 nm incident laser irradiation. A scheme of excitation and emission routes involving ground/excited state absorption, energy transfer upconversion, nonradiative multiphonon relaxation processes in trivalent lanthanide ions in Y2CaGe4O12:Er3+ and Y2CaGe4O12:Er3+, Yb3+ has been proposed. Conditions for visible emission occurrence under quasi-resonance ex = 1064 nm excitation depending on pump power values are considered. In the low-power regime only near-infrared emission caused by the transition 4I13/2 4I15/2 in erbium ions has been detected
\\\\Expert2\\nbo\\Journal of Alloys and Compounds\\2011, v.509, N 5, p.1339.pdf
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