Publications by authors named "Maxim Mikhaylov"
The coordination-driven design and synthesis of new stable supramolecular cluster-porphyrin (CP) hybrids based on an A-type ruthenium porphyrin 5,15-bis[(-tolyl)porphyrinato(2-)]ruthenium(carbonyl)(aqua) [RuDTolP(CO)H2O] and an octahedral molybdenum(II) iodide cluster with six terminal isonicotinate ligands (BuN)[{MoI}(OOC-CHN)] (PyMoC) are reported. The stepwise supramolecular assembly of the PyMoC "superoctahedron" with RuDTolP(CO)H2O has been studied by H NMR and 2D H-H COSY, H-N HMBC and DOSY techniques, as well as by UV-vis spectroscopy and HR-ESI mass spectrometry. The formation of discrete cluster-porphyrin CPn adducts with different numbers of coordinated porphyrins ( = 1-6), including the geometrical isomers of CP2, CP3 and CP4, has been observed.
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- The study developed a new molybdenum-based hybrid photosensitizer (1@MCM-41) by incorporating a hexanuclear molybdenum cluster into amino-decorated mesoporous silica nanoparticles (MCM-41), which is known for its high porosity and surface area.
- The hybrid photosensitizer effectively generates singlet oxygen for photodynamic therapy, showing significant activity against human cervical cancer (HeLa) cells, reducing their viability by up to 70% after 20 minutes of LED light exposure.
- The main conclusion highlights that incorporating molybdenum complexes into porous MCM-41 enhances their photoactivity and improves cellular uptake compared to using free clusters.
-Trirhenium nonaiodide ReI reacts with 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) to produce the novel 13-electron paramagnetic cluster ReI(IMes), which was characterized by means of X-ray diffraction analysis, ESR spectroscopy, magnetometry, and quantum chemistry.
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- - Three new photoactive polymeric materials containing a hexanuclear molybdenum cluster were created and analyzed using various scientific techniques, resulting in transparent, thin sheets made from 2-hydroxyethyl methacrylate (HEMA) and different cross-linkers.
- - These polymeric hydrogels can produce singlet oxygen when exposed to visible light (400-700 nm) and show varying reactivity based on their structure and permeability.
- - One specific formulation (90% HEMA, 10% PEGDMA) is particularly flexible and effective in reducing bacterial populations by 3.0 log CFU/cm when irradiated with blue light (460 nm), demonstrating its potential for biofilm control while protecting the embedded photosens
Catalytic properties of the cluster compound (TBA)[MoI(OCCH)] (TBA = tetrabutylammonium) and a new hybrid material (TBA)MoI@GO (GO = graphene oxide) in water photoreduction into molecular hydrogen were investigated. New hybrid material (TBA)MoI@GO was prepared by coordinative immobilization of the (TBA)[MoI(OCCH)] onto GO sheets and characterized by spectroscopic, analytical, and morphological techniques. Liquid and, for the first time, gas phase conditions were chosen for catalytic experiments under UV-Vis irradiation.
View Article and Find Full Text PDFTa powder reacts with I at 650 °C with the formation of TaI, which belongs to the family of {M(μ-X)} clusters. It undergoes aquation with the formation of the intensely colored [TaI(HO)]. The crystal structure was determined for [TaI(HO)](BPh)·HO (Ta-Ta 2.
View Article and Find Full Text PDFHerein, first examples of supramolecular hybrid organic-inorganic cluster-porphyrin [CP (n = 2, 6)] systems constructed via metal-ligand coordination have been reported. The pyridine end-decorated Mo(ii) halide cluster ((BuN)[{MoI}(OOC-CHN)]), possessing remarkable photophysical properties, was chosen as the inorganic part and A-type zinc porphyrin 5,15-bis[(p-tolyl)porphyrinato(2-)]zinc was selected as the organic part. The crystal structures of CP and CP hybrids have been characterised by single crystal X-ray diffraction.
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