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1.
N. N. Khimich Yu. L. Zub L. A. Koptelova T. S. Mashchenko E. P. Troshina M. G. Voronkov 《Russian Journal of Applied Chemistry》2006,79(11):1769-1774
Sol-gel process of hydrolytic polycondensation of tetramethoxysilane with trimethoxysilyl derivatives of lanthanide phosphoramide
complexes was studied in order to obtain photoluminescent organic-inorganic hybrid materials.
Original Russian Text N.N. Khimich, Yu.L. Zub, L.A. Koptelova, T.S. Mashchenko, E.P. Troshina, M.G. Voronkov, 2006, published
in Zhurnal Prikladnoi Khimii, 2006, Vol. 79, No. 11, pp. 1789–1794. 相似文献
2.
M. A. Rudakova A. S. Troshina A. V. Filippov 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2008,82(3):475-481
The influence of some amphiphilic (diethyl, dipropyl, and dibutyl) esters of (1,1-dimethyl-3-oxobutyl)phosphonic acid with the regularly changing number of CH2 groups in the hydrocarbon (hydrophobic) moiety on the lateral diffusion of dioleoyl phosphatidylcholine lipid and transmembrane diffusion of water in the oriented multibilayer system was studied by 1H pulsed field gradient NMR at phosphonate concentrations up to 30 mol %. The shape of the 31P NMR spectra and the dependence of the shape of the 1H NMR spectra on the bilayer orientation suggest that the presence of phosphonates does not affect the phase state of the system. The lamellar liquid crystalline phase remains unchanged, and phosphonate molecules become incorporated into the bilayer and have the same orientation as phospholipid molecules. The presence of phosphonates in the lipid bilayer increases the coefficients of lipid lateral diffusion and water diffusion through bilayers. This effect depends monotonically on the number of CH2 groups in the phosphonate molecule. The most probable place for the incorporation of amphiphilic phosphonate molecules is the hydrophilic/hydrophobic interphase region of the bilayer. The molecules incorporated into the interphase disorder the bilayer and increase lateral diffusion of lipids and bilayer permeability compared with the ester-free bilayer. When the number of CH2 groups in the ester molecule increases from diethyl to dibutyl phosphonate, the arrangement of lipid hydrocarbon tails becomes more ordered. This decreases the lipid lateral diffusion coefficient and bilayer permeability to water molecules. 相似文献
3.
L. Ya. Vinnikov A. V. Radaev I. S. Veshchunov A. G. Troshina Y. Liu C. T. Lin A. V. Boris 《JETP Letters》2011,93(5):287-289
Vortex structure in FeTe0.66Se0.44 and FeTe0.6Se0.4 single crystals with T
c
∼ 11.7 and 14.5 K, respectively, has been studied using the decoration technique. It has been found that in single crystals
with the simplest crystalline structure of 11-family iron-containing superconductors (without interlayers), no regular vortex
lattice is observed, similar to the case of the previously studied 122 and 1111 families. Using transmission electron microscopy,
the dislocation structure with a density of ∼109 cm−2 has been observed. The problem of pinning in iron-containing superconductor single crystals is discussed. 相似文献
4.
5.
Troshina OA Troshin PA Peregudov AS Lyubovskaya RN 《Organic & biomolecular chemistry》2006,4(9):1647-1649
A facile substitution of amine groups attached to the fullerene cage occurs when 1,4-diaminofullerenes C60[NR2]2 are allowed to react with excess of another amine R'2NH; this reaction proceeds rapidly at room temperature without any additional initiators. 相似文献
6.
Novikova E. V. Ivanov A. V. Egorova I. V. Troshina R. S. Rodionova N. A. Smolentsev A. I. Antzutkin O. N. 《Russian Journal of Coordination Chemistry》2019,45(10):695-705
Russian Journal of Coordination Chemistry - The crystalline heteroleptic bismuth(III) complexes, [Bi{S2CN(iso-C4H9)2}2(NO3)] (I) and [Bi{S2CN(C3H7)2}2Cl] (II), are isolated in preparative yields.... 相似文献
7.
Troshina OA Troshin PA Peregudov AS Kozlovski VI Lyubovskaya RN 《Chemistry (Weinheim an der Bergstrasse, Germany)》2006,12(21):5569-5577
An oxidative radical photoaddition of mono N-substituted piperazines to [60]fullerene was systematically investigated. Reactions of C60 with piperazines bearing bulky electron-withdrawing groups (2-pyridyl, 2-pyrimidinyl) were found to be the most selective and yielded C60(amine)4O as major products along with small amounts of C60(amine)2. In contrast, interactions of fullerene with N-methylpiperazine and N-(tert-butoxycarbonyl)piperazine were found to have low selectivity due to different side reactions. Tetraaminofullerene derivative C60(N-(2-pyridyl)piperazine)4O was found to react readily with organic and inorganic acids to yield highly water-soluble salts (solubility approximately 150 mg mL(-1)). In contrast, C60(N-(2-pyrimidinyl)piperazine)4O undergoes hydrolysis under the same conditions and results in a complex mixture of compounds with an average composition of C60(N-(2-pyrimidinyl)piperazine)2(OH)2O. Radical photoaddition of N-(2-pyridyl)piperazine to fullerene derivatives can be used as a facile route for their transformation into water-soluble compounds. Two model fullerene cycloadducts (a methanofullerene and a pyrrolidinofullerene) were easily converted into mixtures of regioisomers of A=C60(N-(2-pyridyl)piperazine)4O (A=cyclic addend) that give highly water-soluble salts under acid treatment. 相似文献
8.
I. V. Egorova V. V. Zhidkov I. P. Grinishak I. Yu. Bagryanskaya R. S. Troshina N. V. Pervukhina 《Russian Journal of Inorganic Chemistry》2018,63(7):861-866
Tri-p-tolylbismuth perchlorate (1) and μ-oxo-bis[(perchlorato)tri-p-tolylbismuth] (2) have been synthesized by the reaction between tri-p-tolylbismuth dibromide and silver perchlorate and its hydrate. The complexes have been studied by chemical analysis, IR spectroscopy, and X-ray diffraction. Complex 1 is triclinic, space group Pī, Z = 4, a =10.7271(9) Å, b = 13.5585(11) Å, c = 18.1592(13) Å, α = 110.867(3)°, β = 94.944(3)°, γ = 96.888(3)°, V = 2426.3(3) Å3, ρcalcd = 1.865 g/cm3; complex 2 crystallizes in trigonal symmetry, space group R\(\bar 3\), a = 13.1157(2) Å, c = 22.1959(2) Å, γ = 120°, V = 3306.64(8) Å3, ρcalcd = 1.777 g/cm3. The bismuth atoms in the molecular structure of complex 1 have a distorted trigonal bipyramidal coordination to the apically arranged oxygen atoms of perchlorate ions (Bi–C, 2.180(5)–2.201(5) Å; Bi–O, 2.324(4)–2.355(4) Å; OBiO axial angles, 170.1(1)°, 174.5(1)°). The structure of complex 2 contains binuclear [p-Tol3Bi(ClO4)]2O molecules (Bi–O, 2.371(15), 1.9107(7) Å; OBiO axial angle, 180.0°). 相似文献
9.
Olesya A. Troshina Alexander S. Peregudov Vyacheslav I. Kozlovski 《Tetrahedron》2006,62(43):10147-10151
It was shown for the first time that reactions of C60 halides with aliphatic amines provide a facile route for the synthesis of aminofullerenes, valuable precursors for water-soluble cationic fullerene derivatives. Particularly, chlorofullerene C60Cl6 and N-substituted piperazines were investigated in this work. It was shown that substitution of chlorine atoms in C60Cl6 by amine groups is accompanied by partial elimination of addends from the fullerene cage that yields mixtures of di-, tetra- and, hexaaminofullerenes as the final products. Separation of these mixtures by column chromatography resulted in isolation of pure 1,4-diaminofullerenes; this procedure gives much higher and more reproducible yields of these compounds than direct oxidative photoaddition of secondary amines to C60. ESI mass spectrometry and NMR spectroscopy data showed that hexaaminofullerene isomers are major components in inseparable mixtures of polyaddition products. Polyaminofullerenes were found to be readily soluble in aqueous acids; these solutions are unstable because of a facile substitution of protonated amine groups with hydroxyls. Nevertheless, the use of other amine substrates in the investigated reaction can potentially allow the preparation of more stable water-soluble cationic fullerene derivatives for biological studies. 相似文献
10.
Crystallization of SnO2 Produced by Sol-Gel Technique from Salts of Tin in Different Oxidation States 总被引:1,自引:0,他引:1
Chepik L. F. Troshina E. P. Mashchenko T. S. Romanov D. P. Maksimov A. I. Lutskaya O. F. 《Russian Journal of Applied Chemistry》2001,74(10):1617-1620
SnO2 xerogels were obtained by the sol-gel technique from alcoholic solutions of tin(II) and (IV) salts and used as model systems for studying the behavior of SnO2—the main material of gas sensors, in the course of formation and operation under the action of temperature. 相似文献