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Anastasia S. Kozlenko Nadezhda I. Makarova Ilya V. Ozhogin Artem D. Pugachev Maria B. Lukyanova Irina A. Rostovtseva Gennady S. Borodkin Natalia V. Stankevich Anatoly V. Metelitsa Boris S. Lukyanov 《Mendeleev Communications》2021,31(3):403-406
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V. F. Plyusnin E. M. Glebov V. P. Grivin V. V. Korolev A. V. Metelitsa N. A. Voloshin V. I. Minkin 《Russian Chemical Bulletin》2011,60(1):124-131
Photochromic transformations of phenanthroline-annulated spirooxazine were observed in polycrystalline powders and solid-phase
films obtained from solutions by solvent evaporation. The spectral and kinetic properties of the solid-phase films were studied
by stationary absorption spectroscopy and laser flash photolysis. The mechanism of photoinitiated reactions of solid-phase
samples of phenanthroline-annulated spirooxazine includes mutual transformations of different transoid isomers of the merocyanine
form. 相似文献
15.
M. I. Nikolaeva V. V. Korolev E. A. Pritchina E. M. Glebov V. F. Plyusnin A. V. Metelitsa N. A. Voloshin V. I. Minkin 《Kinetics and Catalysis》2011,52(2):202-209
For three 6′-cyanosubstituted spironaphthooxazines, spectral characteristics of an open form and quantum yields of photoisomerization
were determined both at room temperature and in frozen alcohol matrices. Spironaphthooxazines have demonstrated fairly high
(0.01–0.02) quantum yields of open form appearance at 77 K. The observed peculiarities of the open form UV spectra were explained
by the temperature dependence of the open form isomers distribution. Partial stabilization of the nonequilibrium isomers of
an open form in the low-temperature matrices was revealed. 相似文献
16.
Karamov O. G. Rybalkin V. P. Makarova N. I. Metelitsa A. V. Kozyrev V. S. Borodkin G. S. Popova L. L. Breń V. A. Minkin V. I. 《Russian Chemical Bulletin》2011,60(1):168-174
New dihetarylethenes containing the six-membered bridging moiety, viz., N
2-alkyl-5-furyl-4-thienylpyridazinones, were synthesized. These compounds have photochromic properties in solution. The hindered
rotation of the thiophene and furan rings around the single bonds that link these rings to the double bond of the pyridazinone
moiety results in the formation of mixtures of chiral diastereomers in solution, the lifetimes of the diastereomers being
no longer than 0.2 s. The photochromic rearrangement of pyridazinones is characterized by the highly efficient photocoloration
and the photobleaching, which is an order of magnitude less efficient, in the absence of thermal relaxation processes. 相似文献
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N. A. Voloshin S. O. Bezugliy E. V. Solov’eva A. V. Metelitsa V. I. Minkin 《Chemistry of Heterocyclic Compounds》2008,44(10):1229-1237
Syntheses are reported for cationic indoline spiropyrans with a quaternized pyridinium fragment in the aliphatic side chain,
which display photochromic properties in solution. The major effect of introducing a quaternized pyridinium fragment into
the benzopyran part of the spiropyran entails a significant decrease in the rate of thermal relaxation processes.
*For Communication 30 see [1].
*2Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1513-1522, October, 2008. 相似文献
19.
I. E. Tolpygin V. P. Rybalkin E. N. Shepelenko N. I. Makarova A. V. Metelitsa Yu. V. Revinskii A. V. Tsukanov A. D. Dubonosov V. A. Bren V. I. Minkin 《Russian Journal of Organic Chemistry》2007,43(3):388-392
N,N′-Bis(9-anthryl)-substituted diamines, imidazolidines, and hexahydropyrimidines were synthesized, and their luminescence properties and complexing ability were studied. N,N′-Bis(9-anthrylmethyl)ethane-1,2-diamine and N,N′-bis(9-anthrylmethyl)butane-1,4-diamine were found to be effective and selective PET chemosensors for Zn2+ and H+, respectively. 2-[1,3-Bis(9-anthrylmethyl)hexahydropyrimidin-2-yl]-6-methoxyphenol can be used as fluorescent chemosensor for mercury(II) cations. 相似文献
20.
M. S. Chernov’yants E. B. Podgornaya A. V. Chernyshev A. V. Metelitsa M. O. Knyazhanskii 《Journal of Analytical Chemistry》2000,55(3):245-248
A method for the identification of organic triiodides is proposed, and rapid, highly sensitive procedures for the extraction-spectrophotometric
and extraction-fluorometric determination of medicinal preparations as ion associates with hydroxyxanthene (Eosin) and triphenylmethane
(Bromothymol Blue) dyes. The formation of 1 : 1 ion associates with an absorption maximum at 545 nm (430 nm for ion associates
with Bromothymol Blue) and a fluorescence maximum at 560 nm was detected. The ion associates were extracted with chloroform
from a water-ethanol solution at pH 6.86 and 9.18. The detection limits were cmin ≈ 4.3 × 10-7 M for the extraction-spectrophotometric and cmin ≈ 8.6 sx 10-8 M for the extraction-fluorimetric procedure; RSD ≤2%. The developed procedures can be used for controlling medicinal preparations
and monitoring biological materials 相似文献