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Igor Fritsky

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  • Comment: Sorry, but while he (you) have made a good start, I do not see as yet a pass of WP:NACADEMIC. Please wait a few more years until there is more recognition in terms of citations. Ldm1954 (talk) 21:15, 3 September 2026 (UTC)



Igor Fritsky
Native nameІгор Олегович Фрицький
Born1964
Kyiv, Ukrainian SSR, Soviet Union
🏳️ NationalityUkrainian
🎓 Alma materKyiv State University
💼 Occupation
Known forWater-stable high-valent iron and manganese cage complexes; allosteric control of biomimetic catalysts
🏅 AwardsState Prize of Ukraine in Science and Technology (2007)
Georg Forster Research Award (2023)

Igor Olehovych Fritsky (Script error: The function "langx" does not exist.; born 1964) is a Ukrainian chemist working in coordination, supramolecular and bioinorganic chemistry. He is professor and head of the Department of Physical Chemistry at the Taras Shevchenko National University of Kyiv, and since 2025 a full member (academician) of the National Academy of Sciences of Ukraine.[1][2]

He is known chiefly for work on transition-metal complexes in unusually high oxidation states, for introducing allosteric control into synthetic models of metalloenzymes, and for the design of self-assembled polynuclear coordination compounds.

Education and career

Fritsky was born in Kyiv and graduated with distinction from the Faculty of Chemistry of Kyiv State University in 1987. He remained at the university for the whole of his career, completing a Candidate of Sciences degree in 1990 and a Doctor of Sciences degree in inorganic chemistry in 2003 with a dissertation on polynuclear transition-metal complexes as models of metalloenzyme active sites. He was awarded the academic title of professor in the Department of Inorganic Chemistry in 2005, and has headed the Department of Physical Chemistry since that year.[3][4]

Between 1998 and 2001 he carried out research at the universities of Mainz and Heidelberg in Germany, and he has held shorter research positions at universities in London, Leeds, Seville, Göttingen and Wrocław.[4] He was elected a corresponding member of the National Academy of Sciences of Ukraine in 2021 and a full member in 2025, in the Division of Chemistry; he sits on the division's bureau.[1][2]

Research

High-valent transition-metal complexes and water oxidation

File:Clathrochelate.png
General structure of a clathrochelate, a macrobicyclic complex in which the metal ion is fully encapsulated by the ligand

Fritsky's group develops template syntheses of macrocyclic and cage ligands that hold transition-metal ions in oxidation states normally inaccessible in water, including copper(III), nickel(III), manganese(IV) and iron(IV). Their best-known result is a family of hexahydrazide macrobicyclic iron(IV) clathrochelates that assemble in water under ordinary air oxidation and remain stable indefinitely both as solids and in solution,[5] followed by comparably stable water-soluble manganese(IV) analogues.[6]

These complexes act as catalysts for the oxidation of water, the demanding half-reaction of solar fuel production. An iron(IV) clathrochelate was shown to drive visible-light water oxidation,[7] and the transfer of charge between a ruthenium photosensitiser and the catalyst was characterised by time-resolved spectroscopy.[8] More recent work extends this to molecular and hybrid catalysts for electrochemical water splitting built from abundant first-row transition metals.

Allosteric biomimetic catalysis

In bioinorganic chemistry Fritsky developed the concept of allosteric control of biomimetic catalysis proposed by Roland Krämer. Working in Krämer's group at Heidelberg University between 1999 and 2001, they obtained the first abiotic catalysts of this kind, showing that the activity of an artificial phosphodiesterase can be switched on or tuned by binding a second metal ion at a remote site, so that the identity of that ion determines the catalytic rate.[9] Later work combined several features of natural active sites in a single model — including second-sphere interactions and hydrogen bonding — to produce binuclear zinc complexes that hydrolyse phosphate esters as functional models of metallophosphatases.[10]

Self-assembled polynuclear architectures

A long-running strand of the group's work concerns the self-assembly of discrete metallosupramolecular structures — metallacrowns, [2×2] molecular grids and helicates — from polyfunctional oxime, hydrazide and pyrazole ligands, and their use as building blocks for higher-nuclearity clusters and metal–organic frameworks with designed magnetic and catalytic properties.[11]

Switchable materials

The group also studies spin crossover compounds and hybrid organic–inorganic perovskites, including iron(II) systems showing thermal hysteresis near room temperature, methods of tuning spin-transition parameters through controlled phase changes, and chiral lead halide perovskites built from amino acids.[12] Applications explored for these materials include thermochromic sensors and labels, luminescent materials and microwave switches. Work on iron(IV) clathrochelates has also been applied outside the laboratory: a veterinary preparation for iron-deficiency anaemia based on one such complex was registered in Ukraine in 2021.

Awards

References

  1. ↑ 1.0 1.1 "До складу Національної академії наук України обрано нових членів" [New members elected to the National Academy of Sciences of Ukraine] (in українська). National Academy of Sciences of Ukraine. 1 May 2025. Retrieved 30 August 2026.
  2. ↑ 2.0 2.1 "Фрицький Ігор Олегович" (in українська). National Academy of Sciences of Ukraine. Retrieved 30 August 2026.
  3. ↑ "Викладачі" [Teaching staff] (in українська). Department of Physical Chemistry, Taras Shevchenko National University of Kyiv. Retrieved 31 August 2026.
  4. ↑ 4.0 4.1 "Проф. І. О. Фрицький" (in українська). Faculty of Chemistry, Taras Shevchenko National University of Kyiv. Retrieved 30 August 2026.
  5. ↑ Tomyn, Stefania; Shylin, Sergii I.; Bykov, Dmytro; Ksenofontov, Vadim; Gumienna-Kontecka, Elzbieta; Bon, Volodymyr; Fritsky, Igor O. (2017). "Indefinitely stable iron(IV) cage complexes formed in water by air oxidation". Nature Communications. 8. Bibcode:2017NatCo...814099T. doi:10.1038/ncomms14099. PMC 5253674. PMID 28102364. Unknown parameter |article-number= ignored (help)
  6. ↑ Shylin, Sergii I.; Pogrebetsky, James L.; Husak, Alina O.; et al. (2021). "Expanding manganese(IV) aqueous chemistry: unusually stable water-soluble hexahydrazide clathrochelate complexes". Chemical Communications. 57 (84): 11060–11063. doi:10.1039/D1CC04870H. OSTI 1824881. PMID 34610631 Check |pmid= value (help).
  7. ↑ Shylin, Sergii I.; Pavliuk, Mariia V.; D'Amario, Luca; et al. (2019). "Efficient visible light-driven water oxidation catalysed by an iron(IV) clathrochelate complex". Chemical Communications. 55 (23): 3335–3338. doi:10.1039/C9CC00229D. PMID 30801592.
  8. ↑ Shylin, Sergii I.; Pavliuk, Mariia V.; D'Amario, Luca; Fritsky, Igor O.; Berggren, Gustav (2019). "Photoinduced hole transfer from tris(bipyridine)ruthenium dye to a high-valent iron-based water oxidation catalyst". Faraday Discussions. 215: 162–174. Bibcode:2019FaDi..215..162S. doi:10.1039/C8FD00167G. PMC 6677028 Check |pmc= value (help). PMID 30951052.
  9. ↑ Fritsky, Igor O.; Ott, Rainer; Krämer, Roland (2000). "Allosteric Regulation of Artificial Phosphoesterase Activity by Metal Ions". Angewandte Chemie International Edition. 39 (18): 3255–3258. Bibcode:2000AngCh..39.3255F. doi:10.1002/1521-3773(20000915)39:18<3255::AID-ANIE3255>3.0.CO;2-7. PMID 11028068.
  10. ↑ Penkova, Larysa V.; Maciąg, Agnieszka; Rybak-Akimova, Elena V.; et al. (2009). "Efficient Catalytic Phosphate Ester Cleavage by Binuclear Zinc(II) Pyrazolate Complexes as Functional Models of Metallophosphatases". Inorganic Chemistry. 48 (14): 6960–6971. Bibcode:2009InCh...48.6960P. doi:10.1021/ic900520j. PMID 19548638.
  11. ↑ Ostrowska, Magdalena; Fritsky, Igor O.; Gumienna-Kontecka, Elżbieta; Pavlishchuk, Anna V. (2016). "Metallacrown-based compounds: Applications in catalysis, luminescence, molecular magnetism, and adsorption". Coordination Chemistry Reviews. 327–328: 304–332. doi:10.1016/j.ccr.2016.04.017.
  12. ↑ Sirenko, Valerii Y.; Kucheriv, Olesia I.; Naumova, Dina D.; et al. (2021). "Chiral organic–inorganic lead halide perovskites based on α-alanine". New Journal of Chemistry. 45 (28): 12606–12612. doi:10.1039/D1NJ01089A.
  13. ↑ "Указ Президента України № 1191/2007 від 10 грудня 2007 року" [Decree of the President of Ukraine No. 1191/2007 of 10 December 2007] (in українська). President of Ukraine. Archived from the original on 3 June 2014. Retrieved 30 August 2026.
  14. ↑ "Указ Президента України № 251/2017" [Decree of the President of Ukraine No. 251/2017 of 24 August 2017] (in українська). President of Ukraine. 24 August 2017. Retrieved 30 August 2026.
  15. ↑ "Awards for researchers from developing and transition countries". Alexander von Humboldt Foundation. 30 August 2023. Retrieved 30 August 2026.
  16. ↑ "Chemist Igor Fritsky wins the Georg Forster Research Award". UKRAINET. 1 September 2023. Retrieved 30 August 2026.



Category:1964 births Category:Living people Category:Ukrainian chemists Category:Taras Shevchenko National University of Kyiv alumni Category:Academic staff of the Taras Shevchenko National University of Kyiv Category:Full Members of the National Academy of Sciences of Ukraine


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