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Chuiko Institute of Surface Chemistry

National Academy of Sciences of Ukraine
(official site)

Laboratory of Mass Spectrometry of Surface of Nanosystems

 pokr

Head of Laboratory

Pokrovskiy Valeriy A.

Doctor of Sciences

(Physics and Mathematics),

Professor

 

Telephone: + 380 44 424-94-62

Fax: + 380 44 424-35-67

Cell: 067 449 19 11

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Department staff is 9 co-workers including 1 DSc, 2 PhDs. From 1986, the Department researchers have published about 100 scientific papers; 1 doctor and 2 candidate dissertations were defended.

 

Directions of investigations

Mass spectrometric investigation of structure and properties of carbon materials, proteins, hybrid nanosystems; protein-protein and protein-ligand interactions; the studies on interdependence between structure of biologically active molecules and mechanism of ion formation and fragmentation; studies on gas-phase modification of ports and walls of carbon nanotubes in the course of mass spectrometric experiment and post–thermovacuum treatment; studies on mechanism of organic molecules fixation mechanism inside carbon nanotubes.

The main methodical direction: synthesis and chemical modification of traditional and new-synthesized nanostructured surfaces -- the supports for laser desorption/ionization which way opens new possibilities in mass spectrometry of biomolecules.

 

Main results for the recent years

By method of mass spectrometry using laser desorption/ionization, the destruction of C60 thermally deposited onvarious supports was investigated. It was found that mechanism of ion formation depended upon the nature and structure of the surface on which C60 was condensed, upon conditions of condensation, and also upon mechanisms of ion-molecular reactions in hot ion plum. It was also proved that plasmon resonance as the result of multi-photon excitation of fullerene molecules in condensed state is the first stage and the main mechanism of delivering energy for laser-induced ionization, fragmentation, aggregation and chemical reactions which occur in adsorbed state and ion plum.

Technics of temperature-programmed desorption mass spectrometry was used to investigate thermal destruction of linear polyphenylsiloxane adsorbed on the surface of oxide МхОу/SiO2, where М – Cu, Mg, Mn, Ni, Zn. It was found out that in course of thermolysis of adsorbed polymethylphenylsiloxane, different to polydimethylsiloxane, no six link cycle siloxanes were observed in experiment. It was proved that formation of toluene and diphenyl takes place in the surface layer of silica matrix as the result of thermolysis of adsorbed polymethylphenylsiloxane resulting in recombination of methyl and phenyl radicals.

The technics of laser/desprption ionization mass spectrometry was used to study interaction of proteins albumin, lisozyme, alpha-synuclein and insulin with bistrifluoromethyl cesium. The effect of metal complex on the process of protein self-association was observed and suggestion was proposed concerning specific binding of complex with various functional groups depending upon the nature and structure of protein. For high-order protein aggregates, the possibility of identification of various protein conformations was demonstrated, using characteristic lines and general structure of mass spectrum. It was also shown that fragmentation of alpha-synuclein in conditions of laser/desorption experiment take place preferentially on sites of glycine-valine binding.

 

Laboratory staff

Pokrovskiy Valeriy A., DSc, Head of Laboratory,

tel.: 380 44 424-94-62, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Gromovoy Taras Yu., PhD, Senior Researcher

tel.: +38 (044) 4249456; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Laguta Valentin N., engineer

tel.: 097 5604930; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Mischanchuk Boris M., leading engineer

tel.: +38 (044) 2393316; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Mischanchuk Aleksandr V., leading engineer

tel.: +38 (044) 2393316; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Moshkivska Nadezhda M., leading engineer

tel.: +38 (044) 4249451; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Obrazkov Aleksandr G., leading engineer

tel.: 0504438010; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Severinovska Olga V., PhD, Senior Researcher

tel.: +38 (044) 4249456; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

 

Recent publications

  1. A.M. Puziy, O.I. Poddubnaya, T.Y. Gromovoy. Laser desorption/ionization time of flight mass spectrometry of phosphorus-containing carbons // Carbon. – 2013. – V. 53. - P. 405-408.
  2. S.V. Romanova, Т.Е. Terikovskaya, B.G. Mischanchuk, S.A. Kirillov, V.A. Pokrovskiy. Investigation of decomposition of citrate precursors up to zinc oxide by temperature-programmed desorption mass spectrometry // Chemistry, Physics and Technology of Surface. – 2012. - V.3, № 2. - P. 166-172.
  3. L.О. Davidenko, B.G. Mischanchuk, А.G. Grebenyuk, V.A. Pokrovskiy, Yu.V. Plyuto. Studies on thermolysis of Cr(acac)3 on the surface of SiO2 and Al2O3 by temperature-programmed desorption mass spectrometry // Chemistry, Physics and Technology of Surface. - 2012 - V.3, №3. - P.273-282 (in Russian).
  4. A.B. Karpenko, V.S. Kuts, S.V. Snegir, V.A. Pokrovskiy. Regularities of fragmentation of C60 fullerene according to the data of laser-desorption mass spectrometry and quantum chemistry // Ukr. J. Phys. – 2012. V. 57, N 7. – P. 767–672.
  5. V.O. Gabovych, V.A. Pokrovskiy, Ye.V. Demyanenko, A.G. Grebenyuk. Experimental and theoretical study of laser desorption/ionization of methylene blue from the surface of thermally exfoliated graphite // Ukr. J. Phys. – 2012. -V. 57, N 7. – P. 775 -782.
  6. O.B. Karpenko, V.V. Trachevskij, O.V. Filonenko, V.V. Lobanov, M.V. Avdeev, T.V. Tropin, O.A.Kyzyma, S.V. Snegir. NMR study of non-equilibrium state of fullerene C60 in n-methyl-2-pyrrolidone // Ukr. J. Phys. – 2012. – V. 2. – P. 860–863.
  7. F.F. Contreras-Torres, E.V. Basiuk, V.A. Basiuk, V. Meza-Laguna, T.Yu. Gromovoy. Nanostructured diamine–fullerene derivatives: computational density functional theory study and experimental evidence for their formation via gas-phase functionalization // J. Phys. Chem. A, - 2012, -V 116, № 6, P. 1663–1676.
  8. V.O. Pokrovskiy. Desorption mass spectrometry: physics, physical chemistry, surface chemistry // Visnyk NANU.- 2012.- №12. - P. 28-43 (in Russian).
  9. І.І. Romanovska, О.V. Ossychuk, S.S. Dekina, Yu.A. Shesterenko, O.V. Sevastyanov, Т.Yu. Gromovoy. Phenol oxidation of covalently immobilized horseradish peroxidize // Biotekhnologia. – 2011. - V. 4, № 6. – p. 31-35. (In Ukrainian)
  10. М. Аndrusshina, І. О. Golub, D.D. Didikin, S.E. Litvin, T.Yu. Gromovoy, V.F. Gorchev, V.O. Movchan. Structure, properties and toxicity of nanoparticles of silver and cuprum oxides // Biotekhnologia. – 2011. - V. 4, № 6. – P. 51-60.(in Russian).