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1.
G. A. Domrachev B. S. Kaverin E. G. Domracheva S. A. Gusev S. Yu. Ketkov V. L. Karnatsevich A. I. Kirillov I. L. Vasilevskaya M. A. Lopatin 《Russian Chemical Bulletin》1994,43(8):1305-1309
Hexagonal close-packed (HCP) C60 and C70 films have been prepared by the Langmuir method and examined by electron microscopy and electron-diffraction analysis. It has been shown that the vacuum deposition of a C60+C70 mixture results in the formation of a film with small sized grains and a distorted C60-HCP structure. The simultaneous deposition of C60 and ferrocene results in the formation of a film with a changed morphology and an electron-diffraction pattern that contains a variable amount of ferrocene depending on the experimental conditions. The electron-diffraction pattern corresponds to the presence of the known molecular complex C60[(C5H5)2Fe]2. The analogous simultaneous deposition of fullerene C60 and cobaltocene results in the formation of a C60 film stable in air and water, which contains carbon and cobalt (from the data of X-ray fluorescence, electron microscopy and microdiffraction). It has a different morphology and different diffraction patterns than pure C60 films and, depending on the cobaltocene content (relative to that of fullerene), appears to be a fullerite film doped with various amounts of cobaltocenium fullende, which is an ionic compound.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1379–1383, August, 1994.The work was financially supported by the Russian Foundation for Basic Research (Projects 93-03-4676 and 93-03-18368). 相似文献
2.
N. E. Bogdanchikova M. N. Dulin E. I. Vasilevskaya A. V. Kalinkin 《Reaction Kinetics and Catalysis Letters》1992,48(2):475-481
Silver clusters having unusual optical and chemical properties and characterized by a band at 320–330 nm, are shown to be stabilized by solid matrices of various chemical nature.
, , 320–330 , .相似文献
3.
Salt effects on macrophase separations in non‐stoichiometric mixtures of oppositely charged macromolecules: Theory and experiment 下载免费PDF全文
A. E. Machinskaya L. Leclercq M. Boustta M. Vert V. V. Vasilevskaya 《Journal of Polymer Science.Polymer Physics》2016,54(17):1717-1730
In the field of biological applications, polyelectrolyte complexes are proposed to encapsulate bioactive compounds, to deliver drugs, and also to transfect genes into cells under the name of polyplexes. Complex formation is obtained by addition of a polycation solution into a polyanion solution or vice‐versa. This work proposes a theoretical approach to describe complex formation in the case of non‐stoichiometric mixtures of oppositely charged macroions having different degrees of ionization and different degrees of polymerization under different salt conditions. In a second part, comparison was made with experimental data collected when a weak polybase, namely poly(l ‐lysine) under its bromide form was added stepwise to solutions of various polyanions under their sodium salt form, namely poly(l ‐lysine citramide imide), poly(l ‐lysine citramide), and poly(β‐malic acid), the latter lacking hydroxyl groups attached to the main chain. The stability of stroichiometric complexes made of poly(l ‐lysine) and poly(l ‐lysine citramide) having different molecular masses is discussed. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016 , 54, 1717–1730 相似文献
4.
We suggest a convenient method to obtain N-methyiphthalimide with a high yield in the reaction of phthalic anhydride with aqueous methylamine. 相似文献
5.
The imaginary part of the magnetic susceptibility determining the position, amplitude, and width of damped bulk and surface spin-wave eigenmodes in the spin system of a thin film magnetized in the film plane along the uniaxial bulk and surface anisotropy axis is analyzed numerically for various values of the degree of surface spin pinning. The presence of damping and the finiteness and asymmetry of the degree of surface spin pinning are shown to cause significant changes in the spin-wave resonance spectrum. 相似文献
6.
7.
The relation of the coil-globule transition in macromolecules consisting of amphiphilic and hydrophilic monomer units to the
radius of action of the interaction potential is investigated by the method of computer-assisted experiments. The internal
structure of globules formed by such macromolecules is significantly dependent on the radius of action of the potential. In
the case of the long-range potential, the globule is characterized by the blob structure, while in the case of the short-range
potential, a quasi-helical structure forms. In this structure, the skeleton of a macromolecule forms a helical turn, and the
direction of twisting may vary from one turn to another. The coil-globule transition in such macromolecules proceeds through
formation of the necklace conformation from quasi-helical micelle beads. For sufficiently long macromolecules, the dimensions
of such globules are linearly dependent on the degree of polymerization. 相似文献
8.
Peculiarities of ferromagnetic resonance (FMR) corresponding to bias along the “hard” magnetic axis of a film with 2D uniaxial
anisotropy are studied based on numerical solution of magnetic moment dynamics equations. It is shown that an additional resonance
peak is formed in the FMR spectrum in the vicinity of “bistability field” H
b
. The dependence of this field on the amplitude of the microwave field and damping parameters is analyzed. 相似文献
9.
The theory of reactions between a surface-active substrate and a polymeric catalyst in emulsions has been developed. The conditions under which the rate of reaction in such systems substantially surpasses the rate of reaction in homogeneous systems have been determined and the regimes that make it possible to reduce the total time of the process have been established. 相似文献
10.
L. N. Vasilevskaya V. S. Vasil’eva N. A. Shkredova A. S. Khatenko M. A. Ksenofontov D. S. Umreiko 《Journal of Applied Spectroscopy》2005,72(1):142-145
The spectral-structural characteristics of polyurethane compositions with antipyrene fillers were investigated by a method of IR spectroscopy. The changes revealed in the vibrational spectra can be caused by intermolecular interaction of oligoether and diphenylmethane diisocyanate with aluminum-, boron-, and phosphor-containing compounds.__________Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 72, No. 1, pp. 133–135, January–February, 2005. 相似文献