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排序方式: 共有125条查询结果,搜索用时 15 毫秒
1.
K. E. Mochalov O. A. Ustinova S. A. Strel’tsov S. L. Grokhovskii A. L. Zhuze I. R. Nabiev A. V. Sukhanova V. A. Oleinikov 《Optics and Spectroscopy》2002,93(4):493-500
Topotecan (TPT), a water-soluble derivative of camptothecin (inhibitor of human DNA topoiomerase I), has found wide application in cancer chemotherapy. The central problem in using topotecan is the presence of lactone rings in its molecules, which undergo hydrolysis at a physiological pH yielding an inactive and even toxic form of the drug. The analysis of Raman spectra of TPT in H2O and D2O solutions made it possible to assign the spectral bands to the vibrations of particular molecular groups. Spectral features indicative of the opening of the lactone rings of the TPT molecules, deprotonation of the hydroxyl groups in their quinoline fragments, and of possible participation of the hydroxyl and carbonyl groups in H bonding are found. The data obtained are necessary to study the molecular mechanisms of TPT-DNA interaction and the formation of ternary complexes between TPT, DNA, and DNA topoisomerase I. 相似文献
2.
I. P. Dobrovol’skaya M. V. Mokeev Yu. N. Sazanov A. V. Gribanov T. E. Sukhanova 《Russian Journal of Applied Chemistry》2006,79(8):1312-1315
Variation of the supramolecular structure of heat-resistant polymide films in the course of high-temperature treatment was studied by X-ray diffraction analysis and NMR spectroscopy in solids. 相似文献
3.
I. P. Dobrovol’skaya M. K. Mokeev Yu. N. Sazanov A. V. Gribanov T. E. Sukhanova 《Russian Journal of Applied Chemistry》2006,79(7):1178-1180
Changes in the supramolecular structure of heat-resistant fibers based on polyimide PM were studied by X-ray diffraction analysis and NMR spectroscopy. 相似文献
4.
Evolution of Statistical Ensembles of Microdomains on the Surface of Films of Rigid-Chain Polyimide during Thermal Imidization 总被引:1,自引:0,他引:1
Bronnikov S. V. Sukhanova T. E. Goikhman M. Ya. 《Russian Journal of Applied Chemistry》2003,76(6):967-971
Statistical ensembles of microdomains formed on the surface of polyimide films based on pyromellitic dianhydride and 2,7-diaminofluorene during thermal imidization were described in terms of the model of reversible aggregation using the electron-microscopic data. Parameters of the statistical distribution were determined for each ensemble depending on the film heating temperature. 相似文献
5.
Yu. G. Baklagina A. K. Khripunov A. A. Tkachenko V. V. Kopeikin N. A. Matveeva V. K. Lavrent'ev V. K. Nilova T. E. Sukhanova R. Yu. Smyslov I. S. Zanaveskina V. V. Klechkovskaya L. A. Feigin 《Russian Journal of Applied Chemistry》2005,78(7):1176-1181
The structure and sorption properties of gel films of bacterial cellulose were studied in its interaction with polyvinylpyrrolidone and silver nanoparticles stabilized by this compound. 相似文献
6.
Olga V. Boltalina Lev N. Sidorov Ekaterina V. Sukhanova Igor D. Sorokin 《Chemical physics letters》1994,230(6):567-570
Difluorinated higher fullerenes have been studied by Knudsen cell mass spectrometry. Thermal negative ions CnF2− (n=60, 70, 72, 74, 76 and 78) were produced inside the effusion cell as well as the neutral molecules C60F2 and C70F2. From the equilibrium constants for the electron exchange reactions between difluorinated fullerenes and their parents electron affinity values were derived for C60F2 (2.74 eV) and C70F2 (2.80 eV). 相似文献
7.
Valueva S. V. Vylegzhanina M. E. Sukhanova T. E. 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2018,92(2):334-341
Russian Journal of Physical Chemistry A - Morphological and spectral characteristics of hybrid nanosystems (NSes) based on mono- and bimetallic silver and platinum nanoparticles (NPs) stabilized by... 相似文献
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