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1.
A. R. Mustafina R. R. Amirov Yu. G. Elistratova V. V. Skripacheva Z. T. Nugaeva E. Kh. Kazakova 《Colloid Journal》2002,64(6):734-739
Solubility and acid–base properties of calix[4]resorcinarene (H8L) in aqueous solutions of nonionic surfactants Triton X-100, Triton X-405, and Brij-35, as well as isopropanol were studied by pH-potentiometry. The dependence of the amount of a nonionic surfactant necessary to dissolve H8L on the length of ethylene oxide chain was found. The dissociation constants of macrocycle for the first four steps are low sensitive to the medium nature (micellar or water–alcohol solutions). Complexation ability of the [H8 – n
L]
n– anions with respect to tetramethyl- and tetraethylammonium, N-methylpyridinium, and [Co(En)2(C2O4)]+ cations was studied by pH-potentiometry. A noticeable increase in the selectivity of guest–host binding was found on going from aqueous or water–alcohol to micellar solutions. 相似文献
2.
Steric structures of dysprosium(III) aminobenzoate complexes with the 11 and 12 molar ratio in aqueous solutions were determined on the basis of pH-metric and paramagnetic birefringence data. An increase in conjugation observed for the series of the acids,viz., benzoic,meta-, ortho-, andpara-aminobenzoic acids, results in the increased stability of the complexes with the 11 and 12 composition. In the case ofpara-aminobenzoic acid, the polyhedra [DyL(H2O)6]2+ and [DyL2(H2O)4]+ are cubes with the ligands coordinated to one and two edges, respectively. In the case ofmeta-aminobenzoic acid, the polyhedra [DyL(H2O)6]2+ and [DyL2(H2O)4]+ are a dodecahedron with the ligand coordinated to one edge and a square anti-prism with the ligands coordinated to two edges, respectively. In the case ofortho-aminobenzoic acid, both the 11 and 12 complexes have structures that are intermediate between the structures ofmeta- andpara-aminobenzoic acids.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1767–1770, October, 1994. 相似文献
3.
Elistratova Yu. G. Akhmadeev B. S. Gimazetdinova G. Sh. Podyachev S. N. Mustafina A. R. 《Russian Chemical Bulletin》2019,68(2):394-399
Russian Chemical Bulletin - Polymeric aggregates (~100 nm) based on polydiacetylenic acid doped with the luminescent TbIII complexes with the tetra- and bis-1,3-diketonate derivatives of... 相似文献
4.
5.
Sustainable preparation of gold nanoparticles via green chemistry approach for biogenic applications
Novel premises of ‘Green Nanotechnology’ have tremendous impacts towards industrial scale revolution. The furtive extracted from natural precursors have driven to the generation of biogenic resources for the fabrication of cutting-edge nanomaterials in simple and cost-effective process. This inspection is an intension of the coupling hypothesis of Nanotechnology via ‘Green-Chemistry’ avenue. So, as to diminish the negative effects of technological applications in the health of human beings and the environment, society is focused towards a greener future. Nanoscience assures a promising future by its improvement in green chemistry to develop the 'Greenary Nanoscience and Nanotechnology'. The improvement and execution of chemical assisted processes in order to reduce the usage of harmful substances, the ‘Green Chemistry’ approach is one and only remarkable authentication, which attributed to long range surface area and higher pore volume of gold-nanoparticles. As of now, the efficient biogenic mechanism dramatically reduces the utilization and hazardous reagents have been employed to low-price natural and waste products to yield value-added nanomaterials with extensive relevance, suggesting an economical and green solution to environmental issues. In depth investigation of this critical review illustrates, novel biogenic screening platform was also conducted against antimicrobial strains and degradation of gold-nanoparticles products well explored-from selection precursors evolved from natural extracts, as well as eventually disintegration into bio-degradable yet potentially recyclable byproducts. 相似文献
6.
V. V. Yanilkin A. R. Mustafina A. S. Stepanov N. V. Nastapova G. R. Nasybullina A. Yu. Ziganshina S. E. Solovieva A. I. Konovalov 《Russian Journal of Electrochemistry》2011,47(10):1082-1090
The results of authors on designing electroswitchable supramolecular systems based on calix[4]arenes, calix[4]resorcinols,
and transition metal ions and complexes are summarized. We consider systems in which the switching is performed owing to electrochemical
reactions both of groups grafted to the macrocycle and bound substrates. Examples of electrochemically switchable luminescence
are given. 相似文献
7.
Activation of the S-S bond in diphenyl disulfide by nickel complexes and its reaction with butadiene
U. M. Dzhemilev R. V. Kunakova N. Z. Baibulatova É. M. Mustafina E. G. Galkin G. A. Tolstikov 《Russian Chemical Bulletin》1989,38(3):675-675
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, p. 747, March, 1989. 相似文献
8.
V. V. Yanilkin A. S. Stepanov N. V. Nastapova A. R. Mustafina V. A. Burilov S. E. Solov’eva I. S. Antipin A. I. Konovalov 《Russian Journal of Electrochemistry》2010,46(11):1263-1279
The methods of cyclic voltammetry, electrolysis, and spectrophotometry were used to study electrochemical properties of (TCAS
+ Fe3+ + dipy), (CCAS + Fe3+ + dipy), and (CCAS + Fe3+ + [Co(dipy)3]3+) triple systems (where TCAS is n-sulfonatothiacalix[4]arene, CCAS is tetracarboxylate n-sulfonatocalix[4]arene, and dipy = α,α′-dipyridyl) in an aqueous solution. One-electron reduction of Fe(III) in the (TCAS
+ Fe3+ + dipy) system at pH 2.5 results in electroswitching of iron ions from the lower TCAS ring to the upper ([Fe(dipy)3]2+). Reverse electrochemical switching of the system is impossible due to mediator ([Fe(dipy)3]2+/3+) oxidation of TCAS. Reverse electroswitching of Fe(III) ions from unbound to bound state as ([Fe(dipy)3]2+) with CCAS has been revealed in the system (CCAS + Fe3+ + dipy) (pH 1.7) upon single-electron transfer, whereas reversible electroswitching by the upper rim of CCAS from one complex
ion ([Co(dipy)3]3+) to another ([Fe(dipy)3]2+) has been demonstrated in the system ([Co(dipy)3]3+ + CCAS + Fe3+ upon double-electron transfer. In all systems, electric switching was accompanied by synchronous color switching. 相似文献
9.
Asiya R. Mustafina Svetlana V. Fedorenko Nelya A. Makarova Ella KH. Kazakova Zul'fiya G. Bazhanova Vladimir E. Kataev Alexander I. Konovalov 《Journal of inclusion phenomena and macrocyclic chemistry》2001,40(1-2):73-76
The inclusion behaviour of a new water-soluble sulfonated calix[4]resorcinarene towards alkylammonium and N-methylpyridinium cations has been investigated on the basis of 1H NMR spectroscopy and pH-potentiometry data. The inclusion of the N-methylpyridinium cation has been found to be dependent on pH with the preferable inclusion of the methyl substituent in alkaline and the aromatic ring in neutral aqueous media. 相似文献
10.
S. V. Fedorenko A. R. Mustafina V. V. Skripacheva M. V. Pinus D. A. Tatarinov V. F. Mironov A. Yu. Men��shikova K. V. Kholin M. K. Kadirov A. I. Konovalov 《Russian Chemical Bulletin》2011,60(11):2222-2226
Monodisperse 280?C480 nm silica particles doped with europium complexes with thenoyltrifluoroacetylacetone and adducts with some phosphine oxides as luminophores were prepared for the first time by the optimized Stober procedure using surfactants. The size and the polydispersity of the obtained particles depend on the luminophore incorporated in the polymer template. The photophysical properties of aqueous dispersions of the europium(iii)-doped silica particles were studied by the luminescence method. 相似文献