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 1-10    11-19 
1.

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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2.

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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3.

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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4.

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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5.

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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6.

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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7.

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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8.

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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9.

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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10.

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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