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1.
Polysiloxane based on hydroxyl-containing monomer. Preparation,properties and biomedical application
Lyubova T. S. Zakharycheva N. S. Zakharychev E. A. Lermontova S. A. Ladilina E. Yu. Klapshina L. G. 《Russian Chemical Bulletin》2019,68(5):1075-1080
Russian Chemical Bulletin - A method for synthesis of hyperbranched polysiloxane based on N-methyl-N-(2,3,4,5,6-pentahydroxyhexyl)-N’-(3-triethoxysilylpropyl)urea is proposed. In water, the... 相似文献
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E. Yu. Ladilina T. S. Lyubova V. V. Semenov O. V. Kuznetsova A. I. Kirillov V. I. Faerman A. Yu. Dolgonosova M. A. Baten’kin M. A. Lopatin 《Russian Chemical Bulletin》2010,59(3):590-597
Perfluoroadipic bis(trialkoxysilylpropyl)amide was synthesized as a mixture of five compounds with the general formula (EtO)
n
(MeO)3-n
Si(CH2)3NHC(O)(CF2)4C(O)NH(CH2)3-Si(OMe)
n
(OEt)3-n
(1, n = 1, 2). Hydrolysis of this product by a specified amount of water (1: 4) gave oligomers EtO[(HO)(EtO)Si(CH2)3NH(O)C(CF2)4C(O)NH(CH2)3Si(OEt)2O]nH (
n
= 7–9). From oligomer solutions, transparent glassy thermally stable films were obtained. The film material was studied by
IR spectroscopy, atomic force microscopy, transmission electron microscopy, and powder X-ray diffraction. Compound 1 and oligomers
can efficiently solvate lanthanide diketonate complexes. They displace water from the metal coordination sphere, and this
water is then spent for hydrolysis of trialkoxysilyl groups. The luminescence intensity of matrix films based on the oligomers
depends on the concentration of lanthanide complexes and is very low at 7nexc = 330 nm, whereas the luminescence intensity of the Eu3+ cation is very high. 相似文献
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Ladilina E. Yu. Semenov V. V. Mushtina T. G. Lopatin M. A. Kurskii Yu. A. Kirillov A. I. Domrachev G. A. 《Russian Chemical Bulletin》2002,51(12):2277-2285
Hexakis[bis(2-aminoethoxy)methylsilylethyl]benzene and hexakis[bis(N,N-dimethyl-2-aminoethoxy)methylsilylethyl]benzene C6[(NR2CH2CH2O)2SiMeCH2CH2]6 (4, R = H; 5, R = Me) were prepared from hexakis(methyldichlorosilylethyl)benzene C6(Cl2MeSiCH2CH2)6 and 2-aminoethanol or N,N-dimethyl-2-aminoethanol, respectively. Compounds 4 and 5 react with anhydrous cobalt (ii) chloride to give poorly soluble dodecachloro{hexakis[bis(2-aminoethoxy)methylsilylethyl]benzene}hexacobalt and dodecachloro{hexakis[bis(N,N-dimethyl-2-aminoethoxy)methylsilylethyl]benzene}hexacobalt {Co6[(NR2CH2CH2O)2SiMeCH2CH2]6C6}Cl12 (R = H or Me), respectively. Polyfunctional amine 4 reacts with dicobalt octacarbonyl to produce hexakis[bis(2-aminoethoxy)methylsilylethyl]benzenedicobalt(ii) tetrakis(tetracarbonylcobaltate) {Co2[(NH2CH2CH2O)2SiMeCH2CH2]6C6}[Co(CO)4]4. N,N-Dimethyl-substituted polyfunctional amine 5 is lowly reactive in the reaction with Co2(CO)8, whereas the simplest model of this compound, viz., bis(N,N-dimethyl-2-aminoethoxy)dimethylsilane (NMe2CH2CH2O)2SiMe2, slowly reacts with Co2(CO)8 to give tris[bis(N,N-dimethyl-2-aminoethoxy)dimethylsilane]cobalt(ii) bis(tetracarbonylcobaltate) {Co[(NMe2CH2CH2O)2SiMe2]3}[Co(CO)4]2. Thermal decomposition and transformations of the resulting complexes under the action of oxygen and water were studied. 相似文献
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Ladilina E. Yu. Lyubova T. S. Semenov V. V. Kurskii Yu. A. Kuznetsova O. V. 《Russian Chemical Bulletin》2009,58(5):1015-1022
Three dialkoxysilanes with fluorine-containing groups were synthesized: methyl(3,3,3-trifluoropropyl)dimethoxysilane, methyl(3,3,3-trifluoropropyl)bis(2,2,2-trifluoroethoxy)silane,
and methyl(2,2,2-trifluoro-1-trifluoromethylethoxymethyl)bis(2,2,2-trifluoro-1-trifluoro-methylethoxy)silane. It was found
by IR and 29Si NMR spectroscopies that (3-aminopropyl)-triethoxysilane forms complexes with the indicated compounds, which are hydrolyzed
in the presence of air moisture to form films of high optical quality. 相似文献
8.
Elena Yu. Ladilina Vladimir V. Semenov Aleksey V. Gushchin Irina V. Zhdanovich 《Journal of organometallic chemistry》2007,692(26):5701-5708
Pentavalent bis(triorganosiloxy)triphenylantimony derivatives, Ph3Sb(OSiR3)2 (R = Me, Ph), were synthesized by reaction of triphenylantimony with trimethyl- or triphenylsilanol in the presence of tert-butylhydroperoxide by the mild reaction conditions (0-5 °C, 2 h). The reaction of triphenylantimony with diethanolamine in the presence of tert-butylhydroperoxide gave the cyclic compound Ph3Sb(OCH2CH2)2NH. The mixture of Ph3SbO and Ph3Sb(OCH2CH2NMe2)2 was obtained by the reaction of triphenylantimony with 2-(N,N-dimethylamino)ethanol in the presence of tert-butylhydroperoxide. 相似文献
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Y. V. Semenov E. Yu. Ladilina Yu. A. Kurskii S. Ya. Khorshev N. P. Makarenko G. A. Domrachev L. N. Zakharov G. K. Fukin Yu. T. Struchkov 《Russian Chemical Bulletin》1996,45(10):2420-2426
Hydrolysis of 1,2-dimethyl-1,2-diphenyl-1,2-dichlorodisilane yields 1,2-dimethyl-1,2diphenyldisilane-1,2-diol, which undergoes dimerization into stereoisomeric 2,3,5,6-tetramethyl-2,3,5,6-tetraphenyl-1,4-dioxa-2,3,5,6-tetrasilacyclohexanes under the action of H2SO4. Pure all-trans-isomer has been isolated and characterized by1H NMR and IR spectroscopy and X-ray analysis. The reaction of sodium disilanediolate with FeBr2 results in the formation of 1,2-dimethyl-1,2-diphenyl-4-ferra(ii)-3,5-dioxa-1,2-disilacyclopentane.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2550–2556, October, 1996. 相似文献
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Semenov V. V. Ladilina E. Yu. Cherepennikova N. F. Chesnokova T. A. 《Russian Journal of Applied Chemistry》2002,75(1):127-134
Photolytic vulcanization of siloxane rubber films in the presence of trimethylsiloxy-substituted di- and trisilanes, oligodimethylsilanosiloxanes (Me2SiO)
m
(SiMe2)
n
, Me(Me2SiO)
m
(SiMe2)
n
Me, oligodimethylsilanes Me(Me2Si)
n
Me, and volatile pyrolysis products of polydimethylsilane was studied. 相似文献