A5025444799- Surfactants and Colloidal Systems
- Crystallography and molecular interactions
- Ionic liquids properties and applications
- X-ray Diffraction in Crystallography
- Environmental Chemistry and Analysis
- Crystallization and Solubility Studies
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Molecular Sensors and Ion Detection
- Solid State Laser Technologies
- Chemical Reaction Mechanisms
- Photochemistry and Electron Transfer Studies
- Photorefractive and Nonlinear Optics
- Advanced Battery Materials and Technologies
- Analytical Chemistry and Chromatography
- Crystal structures of chemical compounds
- Optical and Acousto-Optic Technologies
- Advanced Data Processing Techniques
- Semiconductor materials and devices
- Mass Spectrometry Techniques and Applications
- Silicon Nanostructures and Photoluminescence
- Coordination Chemistry and Organometallics
- Spectroscopy and Quantum Chemical Studies
- Laser Material Processing Techniques
- Laser Design and Applications
- Inorganic and Organometallic Chemistry
Institute of Physical and Organic Chemistry
2024
Prokhorov General Physics Institute
1994
Research Institute of Scientific Research and Production Association
1994
The present work describes the structure and binding of adducts N,N'-diacetylpiperazine with halogens interhalogens based on combination different experimental methods quantum chemical calculations. On basis conductometric spectro-photometric results, behavior complexes in acetonitrile solution was described. iodine adduct fully degrades into components. Adducts I-X (X = Cl or Br) partially dissociate to anionic [X-I-X](-) cationic species. In solid state, molecules are connected via...
Antimicrobial, membranotropic and cytotoxic properties of dicationic imidazolium surfactants n-s-n (Im) series with variable length alkyl group (n = 8, 10, 12, 14, 16) spacer fragment (s 2, 3, 4) were explored compared monocationic analogues. Their activity against a representative range Gram-positive Gram-negative bacteria, also fungi, is characterized. The relationship between the biological structural features these compounds revealed, hydrophobicity emphasized as key factor. Among...
A broad set of bis-imidazolium salts with long tails and short spacers (LTSS BIS) odd even number carbons was synthesized characterized a experimental computational methods, such as 1H 13C NMR (2D techniques included), optical electron microscopy, water content determinations, solubility in assessments, melting points measurements, geometry thermochemistry evaluation for model dications PM6. Theoretically substantiated improvements alkylimidazoles dihalides synthesis have been proposed...
Chemical oxidation of InP (100) was carried out in hot nitric acid. Composition the oxides determined by means Auger electron spectroscopy employing layer etching with Ar+ ions. It is shown that composition chemical oxide similar to anodic oxides. They are characterized substantial compositional nonuniformity, increases increase thickness and decreases annealing temperature. Annealing at T=280–400 °C results improved uniformity a higher concentration oxidized phosphorus oxide. such...
Dihalogens readily interact with trimethylamine-N-oxide under ambient conditions. Accordingly, herein, stable 1 : adducts were obtained in the case of iodine chloride and bromide. The crystal molecular structure trimethylamine-N-oxide-iodine adduct was solved. Furthermore, geometry electronic trimethylamine-N-oxide-dihalogen complexes studied computationally. Only ensembles found global minimum for stoichiometry. O⋯X-Y halogen bond is main factor thermodynamic stability these complexes....
Peroxyhydrolysis of 4-nitrophenyl esters phosphoric and phosphonic acids has been studied in organized microheterogeneous systems based on dimeric cationic imidazole-containing surfactants (AlkIm+-(CH2)m-Im+Alk ∙ 2Br- , m = 2,3,4, Alk C12H25, C14H29). Micellar effects the (at pH const [surfactant]0 const) reach ~ 10–100 times. Physicochemical parameters peroxyhydrolysis process (such as substrate binding constants, hydroperoxide anion nucleophilicity micellar pseudophase) are described terms...
This paper reports the results of laser experiments with active elements manufactured a Cr 3+ , Nd :LaSc 3 (BO ) 4 (Cr,Nd: LSB) crystal high concentration 1.3 × 10 21 cm -3 and sensitized by 0.5 20 ions.
The colour centres responsible for the additional laser-induced absorption (“gray tracking") appear in KTP crystals under action of blue-green laser radiation. This effect significantly limits application frequency doublers. value nonlinear depends on incident radiation intensity, exposure (number shots), and mutual orientation plane polarization E polar axis Z crystal. 1