VI.Vernadsky Institute of General
of Sciences of Ukraine
and Inorganic Chemistry

of the National Academy
of Sciences of Ukraine

DEPARTMENT OF HETEROPHASE SYNTHESIS
OF INORGANIC COMPOUNDS AND MATERIALS

Areas of work of the department

The main areas of scientific activity of the department are:
- New knowledge-intensive functional inorganic substances, materials, coatings;
- Heterogeneous coordination chemistry;
- Biologically active substances and materials.

Within the framework of these scientific directions, the department develops new approaches to the synthesis of new homo-, heteropolyhedral (d-d, f-d) and multiligand coordination compounds based on functionalized O,N,S-containing complexes, β-dicarbonyl compounds (saturated and unsaturated β-diketones, β-ketoesters), flavonoids, curcumins, regularities of their formation (in solutions and solid phase) are established, the structure of the synthesized compounds is studied to create composite and hybrid materials (suspensions, films, powders) with specified properties (biologically active, conductive, luminescent, photochemical).

History of the department

The Department of Heterophase Synthesis of Inorganic Compounds and Materials of the Vernadsky Institute of Organic Chemistry of the National Academy of Sciences of Ukraine was organized in 1989 on the basis of the Department of Inorganic Materials Analysis (founded in 1979, Head of the Department: Doctor of Chemical Sciences, Professor Kostromina N.A.) and the Gas Phase Synthesis Group of the Department of High Temperature Inorganic Chemistry (Head: Academician of the National Academy of Sciences of Ukraine Volkov S.V.). The head of the department until April 2012 was Doctor of Chemical Sciences Professor Mazurenko E.A., since April 2012 the department is headed by Doctor of Chemical Sciences, Senior Researcher O.K. Trunova. Until 2011 the department was called "Department of Gas Phase Synthesis of Inorganic Compounds", by the decision of the Academic Council of the Institute the name of the department was renamed to "Department of Heterophase Synthesis of Inorganic Compounds and Materials".

Modern composition of the department

Head of the department
Elena Konstantinovna Trunova
Senior researchers
Oleksandra Stepanivna Berezhnytska Lidia Zheleznova
Junior researchers
Makotryk Tamara Oleksiivna Alexander Rogovtsov Lyudmyla Slyusarchuk
Yaroslav Vitalievich Fedorov Nadiia Borysivna Ivakha
Leading process engineer
Glushakov Vladimir Georgievich

Implemented projects of the department

Head of the Department, Doctor of Chemical Sciences O.K. Trunova

Scientific research is aimed at solving scientific and practical problems:
Scientific :
- The scientific basis for the synthesis of new homo-, heteropolyhedral (d-d, f-d) and multiligand coordination compounds based on functionalized O,N,P,S-containing complexes and β-dicarbonyl compounds (saturated and unsaturated β-diketones, β-ketoesters) of a given composition and properties has been developed.
- Scientific approaches have been developed to obtain new modified complexes (aminocarboxyphosphonic) and polynuclear complexes with 3d metals based on their unique structure with predicted functional properties. The complexes exhibit high biological activity and can be used as biological products for agrobiotechnology.

- The relationship between the physicochemical properties of polydentate polytopic ligands and the corresponding metal complexes and the composition of their coordination units, the structure of the ligands, and the nature of the heterometals that make up the heterometallic compounds was established. The influence of substituents or functional groups on the spectral and luminescent properties of the new complexes was studied, which allowed us to build a number of structure-property models of the complexes for the molecular design of new, more efficient systems with polyfunctional properties for modern technology and medicine.
- Effective methods for the synthesis of nanoscale systems based on volatile homo- and heteronuclear transition metal complexes with polydentate ligands of various classes (saturated β-diketones and/or their fluorinated derivatives, carboxylic acids, O,N-containing donor ligands) were developed, and their structural characteristics (in solid and gas phases) and thermophysical properties were investigated. A low-temperature, high-frequency CVD method and a spray pyrolysis method for the preparation of complex oxide nanocomposites were developed, and the dependence of the composition of pyrolysis products on the composition of complex compounds was established. Using quantum-chemical calculations, numerical modeling, and spectroscopic studies, the regularities of the structure of precursors and the design of CVD processes were established.
- The general regularities of formation of nanostructures of different morphology have been established and effective methods of organizing nanoparticles have been developed to create new highly ordered functional nanostructured composite materials with improved properties.
- Methods for the synthesis of new multiligand (β-diketonate, carboxylate) and heterometallic Ge(IV) coordination compounds have been developed and nano- and submicron germanium structures (nanotubes, nanowires, nanodisks) have been created on their basis, the morphology of which depends on the nature of the substrate. Germanium nanomaterials can be used as components of optoelectronics or as electrode materials for high-capacity batteries.

Candidates of Chemical Sciences O.S. Berezhnytska and N.I. Ivakha

The department's researchers are engaged in the synthesis and study of polymeric compounds based on unsaturated β-dicarbonyl metal complexes by radical polymerization to create luminescent nanomaterials.
- The bases for the synthesis of new β-diketones containing unsaturated substituents in the α-position of the chelate ring and metal complexes and metal polymers of the entire lanthanide series based on them have been developed. Macromolecular metal complexes with high luminescent characteristics were prepared on the basis of monomeric complexes by radical polymerization and copolymerization with styrene, methyl methacrylate, and vinyl carbazole. It has been shown that heteropolymerization of two monomeric complexes containing unsaturated substituents in chelate rings proceeds much faster than homopolymerization with the formation of cross-linked polymers.

According to the calculations of experimental data, junior researchers T.O. Makotryk and O.O. Rogovtsov

It has been found that lanthanide metal complexes, homo- and copolymers exhibit efficient 4-f luminescence in the IR and visible spectral regions. It was found that:
• the luminescence intensity of metal polymers is several times higher than that of monomeric complexes, and the luminescent characteristics of compounds based on β-diketones are higher than those of compounds with β-ketoesters;
• mixed-ligand complexes with phenanthroline have a higher luminescence intensity than the corresponding monoligand complexes;
• вIn heterometallic binuclear f-d-complexes, both quenching (Cu, Ni) and sensitization (Zn) of luminescence are observed depending on the electronic structure of the 3d-metal;
• copolymers with styrene, vinyl carbazole, and methyl methacrylate exhibit lower luminescence than homopolymers. At the same time, the luminescence intensity of copolymers decreases in proportion to the increase in the branching of the industrial monomer (IM) due to the shielding of the emitting centers by more bulky IM molecules.
- Experimental samples of new LEDs (one-, two-, three-layer planar heterostructures) with an emission layer thickness (polymeric lanthanide complexes) of 30 nm with high electroluminescent characteristics have been developed.
-New organic-inorganic hybrid materials based on polymer matrices (polymethyl methacrylate, polystyrene, polyvinylcarbazole, oligomeric silyl sesquioxanes, modified polyacrylamides) were obtained and it was found that the powdered materials contain spherical or spherical particles with a size from 20 to 200 nm. It has been shown that hybrid complexes exhibit a high luminescence intensity that exceeds the luminescence intensity of polymeric compounds, which allows them to be used as precursors of luminescent materials.
-A waste-free, environmentally friendly, energy-saving technology for the production of biologically active microfertilizers and feed additives based on a biologically active complex and trace elements (iron, zinc, manganese, copper, cobalt, magnesium, etc.) has been developed.

In terms of effectiveness, environmental friendliness and low cost, the proposed drugs are significantly superior to the well-known chelating drugs VUXAL (Germany), SECVESTREN (Switzerland), ANTICHLOROSIN and the antianemic drug ANTIANEMIN (Russia).

The above-mentioned areas of scientific activity enabled the department to participate in the following targeted and comprehensive research programs:

- Targeted Integrated Program of the National Academy of Sciences of Ukraine "Fundamental Problems of Nanostructured Systems, Nanomaterials, Nanotechnologies"

Project: "Synthesis, structural features and properties of new heterostructures based on complex oxide systems" (2010-2014)

- State Targeted Scientific and Technical Program "Nanotechnologies and Nanomaterials" for 2010-2014 Project: "New types of nanocomposite systems of polyfunctional action based on lanthanide-containing infrared emitters", Section 2. "Development of technological aspects of obtaining the created infrared emitters" (2010-2014)

- Competition for joint projects of fundamental research of the State Foundation for Basic Research of Ukraine and the Belarusian Republican Foundation for Basic Research

Project No. F54.3/012 "Synthesis, study and properties of metal-polymer complexes of d- and f-metals" (2013-2014)

- Innovative projects "Development of technologies for the synthesis and creation of environmentally friendly coordination compounds based on biologically active complexes for diagnostic materials for biomedical purposes" (2012, No. 32-12), "Technology for obtaining new highly effective environmentally friendly microfertilizers of complex action to increase agricultural production and improve its quality" (2015, No. 310).

- The international cooperation of the Department was carried out under the agreement with the Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic on the project "Chemical deposition and study of nanosystems from non-volatile coordination precursors" (2014-2016), where IZNKh was the main executor. The Department cooperates with the Jan Dlugosz University of Czestochowa (Czestochowa, Poland) in the framework of joint research on the synthesis and study of coordination compounds based on complexes (2014-2016). Based on the materials of cooperation, there are 4 abstracts at the conference "7th International Meeting on Halogen Chemistry (HALCHEM VII), Częstochowa, Poland, September 3-6, 2015".

D. in Chemistry, Associate Professor O.S. Berezhnytska

Projects currently being implemented by the department

Currently, the staff of the department is fulfilling the Departmental Order of the Department of Chemistry of the National Academy of Sciences of Ukraine: Topic №318E "Creation of new polyfunctional nanomaterials based on coordination compounds of 3d metals and lanthanides with O,N-donor ligands" and the competitive topic "Functionally oriented nanoscale heterostructures based on transition metal compounds of antiviral and antitumor action, antiviral, antitumor and antibacterial effects" within the framework of the Targeted Program of Basic Research of the National Academy of Sciences of Ukraine "Promising Basic Research and Innovative Development of Nanomaterials and Nanotechnologies for the Needs of Industry, Healthcare and Agriculture" for 2020-2024.

Awards of the department

State Prize of Ukraine in Science and Technology for Doctor of Chemical Sciences, Professor E.A. Mazurenko (2011);

Certificate of Honor of the Cabinet of Ministers of Ukraine "For significant personal contribution to the development of fundamental and applied research in the field of inorganic chemistry, many years of conscientious work and high professionalism" to Dr. Trunova O.K. (2004),

Honorary Diploma of the Presidium of the Verkhovna Rada of Ukraine to Doctor of Chemical Sciences, Professor E.A. Mazurenko (2004);

Diploma and medal "Labor Glory" IARTAS "Golden Fortune" Dr. Trunova O.K. (2013)

The award of the National Academy of Sciences of Ukraine "For the preparation of a scientific shift" to Dr. Trunova O.K. (2018),

The most significant and cited articles

The results of the department's research have been published in more than 700 scientific papers, a handbook on the extraction of inorganic elements, a textbook for universities, and are protected by about 40 copyright certificates and patents.

In 2013-2017, he published 113 scientific papers, including 59 articles, including 23 in journals included in the Scopus and Web of Science databases, and 54 abstracts at professional conferences.