A5046304622- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Metal complexes synthesis and properties
- Organic Light-Emitting Diodes Research
- Microbial Natural Products and Biosynthesis
- Luminescence and Fluorescent Materials
- Chemical Reactions and Isotopes
- Crystallography and molecular interactions
- Electron Spin Resonance Studies
- Actinomycetales infections and treatment
- Photochemistry and Electron Transfer Studies
- Fluorine in Organic Chemistry
- Microbial Community Ecology and Physiology
- Steroid Chemistry and Biochemistry
- Mycorrhizal Fungi and Plant Interactions
- Nanocluster Synthesis and Applications
- Pharmaceutical and Antibiotic Environmental Impacts
- Spectroscopy and Quantum Chemical Studies
- Plant Pathogens and Fungal Diseases
- Solid-state spectroscopy and crystallography
- DNA and Nucleic Acid Chemistry
- Metal-Organic Frameworks: Synthesis and Applications
- Mycobacterium research and diagnosis
Nikolaev Institute of Inorganic Chemistry
2011-2024
Siberian Branch of the Russian Academy of Sciences
2015-2021
Novosibirsk Tuberculosis Research Institute
2021
Novosibirsk State University
2010-2020
Lomonosov Moscow State University
2009-2017
Russian Academy of Sciences
2012-2013
Manipulating the relaxation pathways of excited states and understanding mechanisms photochemical reactions present important challenges in chemistry. Here we report a unique zinc(II) complex exhibiting unprecedented interplay between excitation-wavelength-dependent emission, thermally activated delayed fluorescence (TADF) state intramolecular proton transfer (ESIPT). The ESIPT process is favoured by short OH⋅⋅⋅N hydrogen bond. Synergy emission arises due to heavy zinc atom favouring...
A series of mononuclear heteroleptic copper(I) halide complexes, [CuL(PPh3)X] (X = Cl, Br, I), based on 4-(3,5-diphenyl-1H-pyrazol-1-yl)-6-(piperidin-1-yl)pyrimidine (L) and triphenylphosphine, have been synthesized by reaction between CuX L PPh3 in a molar ratio 1/1/1 MeCN solutions. The copper atom, showing the distorted tetrahedral environment, is bound N,N-chelating ligand L, triphenylphosphine ion. complexes [CuL(PPh3)Cl] [CuL(PPh3)Br] are isostructural. In CH2Cl2 solutions, I) display...
A mononuclear manganese(ii) complex with a chelating 4-(3,5-diphenyl-1H-pyrazol-1-yl)-6-(piperidin-1-yl)pyrimidine ligand (L), [MnL2Cl2]·H2O, shows intriguing excitation wavelength-dependent emission. Depending on the wavelength, demonstrates three emission bands maxima at 380 nm, 440 nm and 495 nm. The emissions originate from π → π* n ligand-centered transitions. long-wave microsecond lifetimes is related to d-d transitions and/or metal-to-ligand halogen-to-ligand charge transfer. behavior...
The rational design of ESIPT-capable metal complexes (ESIPT - Excited State Intramolecular Proton Transfer) requires two sites, namely, an ESIPT site and a binding site, to be spatially separated into the ligand core. Ligands featuring such sites are able bind ions without being deprotonated upon their coordination. use ligands for synthesis paves way toward exploration in field coordination chemistry. In this study, we present new on base 1-hydroxy-1H-imidazole,...
The ability of 1-hydroxy-1H-imidazoles to undergo proton transfer processes and exist in N-hydroxy N-oxide tautomeric forms can be used coordination chemistry for the design ESIPT-capable complexes. A series zinc(II) complexes [Zn(HL)Hal2] (Hal = Cl, Br, I) with a rationally designed ESIPT-ligand 1-hydroxy-5-methyl-2,4-di(pyridin-2-yl)-1H-imidazole (HL) featuring spatially separated metal binding ESIPT sites have been synthesized characterized. Crystals these compounds consist mixture two...
The emission of ESIPT-fluorophores is known to be sensitive various external and internal stimuli can fine-tuned through substitution in the proton-donating proton-accepting groups. incorporation metal ions molecules ESIPT fluorophores without their deprotonation an emerging area research coordination chemistry which provides chemists with a new factor affecting reaction ESIPT-coupled luminescence. In this paper we present 1-hydroxy-5-methyl-4-(pyridin-2-yl)-2-(quinolin-2-yl)-1H-imidazole...
More rigid μ<sub>2</sub>-<italic>N</italic>,<italic>S</italic> coordination of 2-(alkylsulfanyl)pyrimidine ligands in copper(<sc>i</sc>) iodide polymers leads to a much more efficient emission comparison with <italic>N</italic>-monodentate coordination.
Interplay of three emission mechanisms for silver(<sc>i</sc>) complexes leads to luminescence thermochromism and color tunable emission.
The magnetic and thermodynamic properties of the prototypical 1D polymeric complex Fe(ATrz)3(NO3)2·H2O (ATrz = 4-amino-1,2,4-triazole) were reinvestigated to gain an insight into impact water molecules on spin transition. Variations in outerspheric molecule content induce drastic unpredictable changes its crossover regimes. Under vacuum loses shows a wide (ca. 30 K) reproducible hysteresis loop, Tc↑ 337-345 K Tc↓ 316-313 K. In sealed ampoules narrow 1-4 K), 326-329 326-324 After adsorption...
Mononuclear copper(I) complexes [CuL2]I (1), [CuL2]2[Cu2I4]·2MeCN (2) and [CuL2]PF6 (3) with a new chelating pyrazolylpyrimidine ligand, 2-(3,5-dimethyl-1H-pyrazol-1-yl)-4,6-diphenylpyrimidine (L), were synthesized. In the structures of complex cations [CuL2]+, Cu+ ions coordinate two L molecules (N,N-chelating coordination). Extended π-systems in [CuL2]+ favor formation paired π-π stacking intramolecular interactions between pyrimidine phenyl rings leading to significant distortions...
Abstract The ability of 1‐hydroxy‐1 H ‐imidazoles to exist in the form two prototropic tautomers, N‐hydroxy and N‐oxide forms, can be utilized design new types ESIPT‐fluorophores (ESIPT=excited state intramolecular proton transfer). Here we report first example ‐imidazole‐based ESIPT‐fluorophores, 1‐hydroxy‐5‐methyl‐2,4‐di(pyridin‐2‐yl)‐1 ‐imidazole ( HL ), featuring a short hydrogen bond O−H⋅⋅⋅N (O⋅⋅⋅N 2.56 Å) as pre‐requisite for ESIPT. emission originates from anti‐Kasha S 2 →S 0...
All copper ions in a copper(<sc>i,ii</sc>) mixed-valence 1D-polymer show tetrahedral coordination cores, CuNBr<sub>3</sub> and CuN<sub>2</sub>Br<sub>2</sub>, which is extremely rare for compounds.
Two mononuclear iron(ii) complexes with isomeric N,N,N-tridentate pyrimidine-based ligands were synthesized. Both show reproducible hysteretic spin crossover. Low state to high switching is cooperative due autocatalysis.