Conclusion N-Acetoxymethyldiethylamine reacts with tetraethyldiamidophenylphosphonite and diethylamidodiphenylphosphinite, and N-acetoxymethylbenzamide with tetraethyldiamidophenylphosphonite at the phosphorus atom only to form Arbuzov reaction products. The reaction of N-acetoxymethylacetamide with tetraethyldiamidophenylphosphonite and diethylamidodiphenylphosphinite, and the reaction of N-acetoxymethylbenzamide with diethylamidodiphenylphosphinite proceed at two reaction centers at the phosphorus atom to form the Arbuzov reaction products, and at the nitrogen atom to form acetoxyphosphinites (phosphonites) and N-diethylaminomethylamides.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2765–2769, December, 1986. 相似文献
Russian Journal of General Chemistry - A method was proposed for introducing cobalt resinate catalyst into VKF-093 primer-based waterborne compositions for electrodeposition. The colloidal-chemical... 相似文献
The mono-meso-allyloxy- and acrylamidophenylporphyrins were synthesized from the corresponding hydroxy- and aminophenylporphyrins. All the compounds were characterized by IR, UV-Vis, 1H NMR and mass spectra. 相似文献
In order to obtain porphyrin-containing polymers, the copolymerization of acrylate monomers of the various structures with natural porphyrin, namely methyl pheophorbide a (MPP) and its complex with copper (CuMPP) in tetrahydrofuran and toluene was studied. The copolymers of methyl methacrylate (MMA) with MPP or CuMPP, glycidyl methacrylate (GMA) with MPP or CuMPP having different compositions were synthesized. The influence of the nature of the solvent, the initial mass ratio of the monomers during copolymerization on the structure, composition, and properties of the obtained compounds were investigated. The study of the physico-chemical, molecular weight, structural, and chemical characteristics of the prepared copolymers was carried out. The possibility of controlled synthesis of the copolymers with controlled molecular weight characteristics by varying the parameters of the reaction medium was shown.
Thermal lens spectrometry is applied to determine the absorption of transparent nanocomposite materials, which are produced
by the thermal decomposition of silver salts absorbed in the bulk of a polymethacrylate matrix. The high spatial resolution
of determination, corresponding to the size of laser beams, makes it possible to evaluate the homogeneity for the distribution
of coloration in the matrix. The advantages of thermal lens spectrometry over spectrophotometry include the weak effect of
sample scattering on the results of its absorption determination and a higher sensitivity of determination, which may exceed
that of spectrophotometry by one or two orders of magnitude. The possibility of achieving local syntheses of nanosized particles
in the bulk of the matrix by virtue of the photoinduced decomposition of silver salts in initial polyacrylate materials is
shown. Thermal lens experiments also allow the combination of the synthesis of silver nanoparticles and control of the absorbance
for the prepared structural units. 相似文献
The review presents an analysis of the data on the synthesis of metalloporphyrin-based polymers of different structure. Manufacturing coordination polymers via extra coordination of small molecules and fragments of high-molecular-weight compounds by porphyrin metal complexes are discussed. The main approaches to the development of functional materials based on these polymers are summarized. 相似文献
A sensitive electrochemical sensor based on a composite containing silver nanoparticles and a redox active thiacalixarene with catechol fragments in the substituents at the lower rim has been developed and used for dopamine detection. The electrochemical investigation of thiacalixarene in homogeneous solution and on the electrode interface showed the reversible character of the redox conversion of catechol fragments and its involvement in the chemical reduction of silver which resulted in formation of uniform nanoparticles of 4–6 nm in diameter. The use of such a material for electrode modification made it possible to record a high amplitude cathodic signal at ?700 mV that was proportional to the dopamine concentration within 1 nM–1 µM. (limit of detection 0.5 nM). 相似文献
Methods of photothermal (thermal-lens) determination of
iron and mercury on the basis of solid polymer matrices with immobilized
reagents are developed. These methods combine selective and efficient
preconcentration of trace elements to be analyzed on a transparent polymer
matrix, the sensitivity of determination with the reliable and traceable
photometric procedures and highly sensitive thermal-lens detection (enhanced
in polymers compared to solutions). The advantage of this approach is in the
use of sensitive organic reagents previously developed for
spectrophotometry. In this study, transparent polymethacrylate matrices
modified with copper dithizonate and 1,10-phenanthroline were applied to the
determination of mercury(II) and iron(II), respectively. 相似文献
Conclusions The authors study the hydrolysis of some pentavalent compounds of phosphorus containing phosphaindan heterocyclic groups and a P-N bond. Hydrolysis leads to rupture or retention of the phosphaindan heterocyclic group, depending on the structure.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 154–156, January, 1969. 相似文献