A5001503791- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Magnetism in coordination complexes
- Nanocluster Synthesis and Applications
- Photochemistry and Electron Transfer Studies
- Nanomaterials for catalytic reactions
- Electron Spin Resonance Studies
- Nanoplatforms for cancer theranostics
- Advanced Polymer Synthesis and Characterization
- Protein Interaction Studies and Fluorescence Analysis
- Photochromic and Fluorescence Chemistry
- Nitric Oxide and Endothelin Effects
- Epoxy Resin Curing Processes
- Photopolymerization techniques and applications
- Oxidative Organic Chemistry Reactions
- Organic Chemistry Cycloaddition Reactions
- Click Chemistry and Applications
- Chemical Reactions and Mechanisms
- Organic and Molecular Conductors Research
- Copper-based nanomaterials and applications
- Crystallography and molecular interactions
- Porphyrin and Phthalocyanine Chemistry
- Catalytic C–H Functionalization Methods
- Radical Photochemical Reactions
Tomsk Polytechnic University
2019-2025
National Research Tomsk State University
2019-2025
Gold nanoparticles with shape-determined chirality enable the attainment of plasmon-associated optical activities exceeding those exhibited by all previously known natural objects. These nanoparticles, together their subdiffraction light focusing and excitation chiral, plasmon-related near-fields, offer a range very interesting applications. Herein, we propose use these chiral plasmon for asymmetric organic catalysis implementation optically active probes (alkoxyamines). Plasmon triggering...
Six aryl- and pyridine-substituted nitronyl-nitroxide radicals were synthesized characterized to investigate their optical anisotropy properties. Single-crystal X-ray diffraction analysis revealed molecular packing organized either by halogen hydrogen bonding or alone. Electronic absorption spectra of these in single crystals recorded the visible region, revealing pronounced linear dichroism three compounds, while others displayed no such property. Time-dependent DFT ab initio calculations...
The local surface plasmon resonances of gold nanoparticles have the potential to create alternative pathways for organic chemical reactions. These transformations depend on various physical factors, such as temperature, illumination regime, and nanoparticle type. However, role factors associated with reactants, including molecular structure, electronic effects, bonding metal surface, is often underestimated. To explore these we synthesized five alkoxyamines (AAs) different structures used...
Through the interaction of a halogen bond donor (1,4-diiodotetrafluorobenzene; 1,4-FIB) with isomers pyridyl-substituted nitronyl nitroxides (Py-NN), five novel cocrystals were constructed via bonding. The (pPy-NN)n·1,4-FIB (n = 1, 2, 4) and (mPy-NN)n·1,4-FIB 2) are represented by discrete clusters Py-NN·1,4-FIB·NN-Py, cyclic tetrameric structures (pPy-NN)4·(1,4-FIB)4, or one-dimensional (1D) zigzag chains. Density functional theory calculations used to analyze nature bonds compare strengths...
The rational design of plasmonic catalysts encompasses the manipulation nanoparticle (NP) size: smaller AuNPs size is, higher catalytic activity occurs.
Iodine‐ and ethynyl‐containing 'Kuhn'‐verdazyls, oxoverdazyls, nitronyl nitroxides were investigated as building blocks for the preparation of multi‐spin systems via Sonogashira reaction, and, a result, eleven diradicals prepared with fair yields. The reactivity indicates that oxoverdazyl iodides are effective starting components synthesis coupling. described one‐step protocol allows combining different spin units, thereby facilitating design tolane‐bridged screening their properties. novel...
A novel approach to the preparation of stable Pd-substituted verdazyls was developed through direct oxidative addition iodoverdazyls Pd(PPh<sub>3</sub>)<sub>4</sub>.
Novel nitronyl nitroxides are assembled in the solid state into chains, which radical building blocks linked by intermolecular I⋯N–O halogen bonding. Magnetic analyses revealed that nitroxides, radicals weakly coupled.
Abstract The development of novel photo‐dynamic therapy (PDT) agents enabling to treat the oxygen‐deficient tumors is emerging tasks for modern medicinal chemistry. Herein, we describe design and preparation water‐soluble PDT which generate active radical species upon light irradiation. Two conjugates carbohydrates with 1,2,4,6‐substituted‐1,4‐dihydro‐1,2,4,5‐tetrazin‐3(2H)‐ones (AlkVZs) demonstrated high oxygen‐independent cytotoxicity on PC‐3 Jurkat cancer cells under irradiation combining...
The on-demand generation of stable organic radicals from the precursors can be considered as an essential challenge for plethora applications in various fields science. In this contribution, we prepared a range N-(methyl)benzyl derivatives 6-oxoverdazyl via atom transfer radical addition moderate to high yields and studied their thermal- photo-initiated homolysis. kinetics homolysis was measured, dissociating rate constant kd, activation energy Ea frequency factor A were estimated. Variation...
In this study, low-temperature EPR spectroscopy and quantum-chemical techniques were employed to investigate multispin systems─1,5-diphenyl-3-(3-nitrenophenyl)-6-oxoverdazyl 1,5-diphenyl-3-(4-nitrenophenyl)-6-oxoverdazyl─that contain a nitrene center at either meta- or para-position, respectively. Ground states magnetic zero-field splitting (ZFS) parameters of these systems determined by experimental computational methods. The results indicated that the high-spin quartet state is ground...
Recently, light-to-chemical energy conversion achieved by excitation of plasmon resonance on noble metal nanoparticles (NPs) has become a useful tool in organic synthesis to substitute harsh reaction conditions and complex catalytic systems. The rational design plasmonic catalysts encompasses the manipulation NP size regulate both surface characteristics optical properties. Here, we tested 3, 13, 22, 32, 67 nm spherical gold (AuNPs) common model reactions, namely, 4-nitrophenol reduction,...
Two alkylated verdazyl radicals (AlkVZs) were investigated as active compounds for photoinitiated controlled MCF-7 cell death. Observed results unambiguously showed that AlkVZ could be a potential structural moiety the design of novel family photodynamic therapy agents. The main advantage proposed substances is an oxygen-independent generation radicals, which play pivotal role in treatment oxygen-deficient tumors.
The excitation of localized plasmon resonance on nanoparticles followed by the interaction with organic molecules leads to new pathways chemical reactions. Although a number physical factors (temperature, illumination regime, type nanoparticles, etc.) are affecting this process, role is underestimated. Challenging assumption, here we studied kinetic plasmon-induced homolysis five alkoxyamines (AAs) different and electronic structures using electron paramagnetic (EPR). data revealed...
The excitation of localized plasmon resonance on nanoparticles followed by the interaction with organic molecules leads to new pathways chemical reactions. Although a number physical factors (temperature, illumination regime, type nanoparticles, etc.) are affecting this process, role is underestimated. Challenging assumption, here we studied kinetic plasmon-induced homolysis five alkoxyamines (AAs) different and electronic structures using electron paramagnetic (EPR). data revealed...