A5077316953- Luminescence Properties of Advanced Materials
- Inorganic Fluorides and Related Compounds
- Gas Sensing Nanomaterials and Sensors
- Solid State Laser Technologies
- Optical properties and cooling technologies in crystalline materials
- Nanoplatforms for cancer theranostics
- Catalytic Processes in Materials Science
- Laser-Ablation Synthesis of Nanoparticles
- Analytical Chemistry and Sensors
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Carbon Nanotubes in Composites
- Lanthanide and Transition Metal Complexes
- Photodynamic Therapy Research Studies
- Conducting polymers and applications
- Carbon and Quantum Dots Applications
- Graphene research and applications
- Advanced Sensor and Energy Harvesting Materials
- Photorefractive and Nonlinear Optics
- Chemical Thermodynamics and Molecular Structure
- Spectroscopy and Laser Applications
- Machine Learning in Materials Science
- Building materials and conservation
- Nonlinear Optical Materials Research
- Terahertz technology and applications
Kazan Federal University
2014-2024
Institute of Physics
2017-2024
A.E. Arbuzov Institute of Organic and Physical Chemistry
2012
The main goal of this study was creating multifunctional nanoparticles based on rare-earth doped LaF 3 nanocrystals, which can be used as fluorescence thermal sensors operating over the 80–320 K temperature range including physiological (10–50°C). Pr 3+ :LaF (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mi>C</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">P</mml:mi><mml:mi...
Localised extracellular interactions between nanoparticles and transmembrane signal receptors may well activate cancer cell growth. Herein, tiny LaF3 PrF3 in DMEM+FBS suspensions stimulated tumour growth three different human lines (A549, SW837 MCF7). Size distribution of nanoparticles, activation AKT ERK signalling pathways viability tests pointed to mechanical stimulation ligand adhesion binding sites integrins EGFR via a synergistic action an ensemble size (< 10 nm). While be associated...
Calcium sulfate powder materials containing terbium ions at 0, 1.0, or 2.0 mol.% were obtained. They are characterized by the presence of a CaSO4×0.5H2O phase, while Tb3+ is incorporated into lattice ≤1.0 mol.%. Specific surface area enlarged from 2.1 to 22.5 m2/g as crystallite size decreased 68 31 nm. Thermal analysis showed that slightly raises temperature CaSO4×2H2O-to-CaSO4 transition. Studies solubility in SBF solution calcium phosphate layer terbium-containing cements on 7th day....
Promising material for hybrid photodynamic therapy consisting of Ce0.5Y0.35Tb0.15F3 crystalline nanoparticles and Radachlorin is reported. One possible option conjugation using polyethylenimine (PEI) tested. The energy transfer reaches 28%. It shown that conjugates CeF3—Tb3+ NPs PEI—are stable, the distance between photosensitizer molecules about 5 nm.
The Ce0.5Y0.35Tb0.15F3 nanoparticles with a CeF3 hexagonal structure were synthesized using the co-precipitation technique. average nanoparticle diameter was 14 ± 1 nm. luminescence decay curves of (λem = 541 nm, 5D4–7F5 transition Tb3+) conjugated Radachlorin polyvinylpyrrolidone coating as well without detected. Efficient nonradiative energy transfer from Tb3+ to demonstrated. maximum coefficients for via and 82% 55%, respectively. distance between surface R0 4.5 best results X-ray-induced...
In this work, the physical characterization of LiGdxY1−xF4 (x = 0.05, 0.3, 0.7, and 1.0) LiGdF4:Eu3+ microparticles was performed. The distribution coefficient 0.05) determined for first time (0.84). Based on kinetic data, LiGdF4 sample chosen further Eu3+ doping (0.1 1.0 at.%). For sample, emission clearly observed under excitation Gd3+. This fact indicates an effective energy transfer from Gd3+ to Eu3+. temperature-dependent spectral (1.0%) revealed that in 30–250 K temperature range, a...
The Pr 3+ :LaF 3 (C = 3, 7, 12, 20, 30%) nanoparticles were characterized by means of high-resolution transmission electron microscopy, X-ray diffraction, optical spectroscopy, energy dispersive dynamic light scattering, and MTT assay. It was revealed that the average diameter all NPs is around 14–18 nm. hydrodynamic radius 7%) strongly depends on medium. radii in water, DMEM, RPMI-1640 biological mediums 18 ± 5, 41 6, 186 8 nm, respectively. nontoxic at micromolar concentrations toward...
Core Pr 3+ : LaF 3 ( C = 1%) plate-like nanoparticles (nanoplates), core/shell 1%)/LaF nanoplates, core sphere-like (nanospheres), and nanospheres were synthesized via the coprecipitation method of synthesis. The (NPs) characterized by means transmission electron microscopy, X-ray diffraction, optical spectroscopy. formation shell was proved detecting increase in physical sizes, sizes coherent scattering regions, luminescence lifetimes NPs comparing with single NPs. average nanospheres, 62.2...
This work is devoted to the study of thermometric performances Nd3+ (0.1 or 0.5 mol.%), Yb3+ (X%):YF3 nanoparticles. Temperature sensitivity spectral shape related phonon-assisted nature energy transfer (PAET) between and Yb3+). However, in case single-doped mol.%):YF3 nanoparticles, luminescence decay time (LDT) 4F3/2 level (0.5 decreases with temperature decrease. In turn, sample remains constant. It was proposed, that at mol.% cross-relaxation (CR) ions takes place contradistinction from...
A set of Pr 3+ :LaF 3 nanoparticles (NPs) were synthesized via coprecipitation method at three stoichiometric proportions La(NO ) , Pr(NO and NaF (1 : 0.8, 1 1, 6, respectively). Two ways mixing the solutions (dropwise swift addition) used. One sample was subjected to microwave (MW) treatment for 30, 90, 180 min. All samples characterized by transmission electron microscopy (TEM) X-ray diffraction (XRD). For all samples, optical spectroscopy experiments carried out. The XRD data analyzed...
Nd3+ (0.3 mol.%), Yb3+ (0, 1, 2, 3 and 5 mol.%): LiYF4 phosphors were grown by the Bridgman–Stockbarger technique. The luminescence intensity ratio (LIR) of (4F3/2–4I9/2, ~866 nm) emission (2F5/2–2F7/2, ~980 was taken as a parameter. energy exchange between 4F3/2 (Nd3+) 2F5/2 (Yb3+) occurs via phonons, which elucidates LIR temperature dependence. influence cross-relaxation process on sensitivity estimated negligible. function depends concentration at fixed 0.3 mol.% Nd3+. maximum Sa Sr value...
Abstract: The YF3: (Eu3+, Nd3+) nanoparticles (orthorhombic phase, D ~ 130 nm)) were synthesized via the co-precipitation method with subsequent hydrothermal treatment and annealing. Eu3+ τdecay linearly descends increase of temperature in 80 - 320 K range. (T) slope values annealed (2.5 5.0 mol. %) highest (110·10-4 67·10-4, μs/K whole – range, respectively. Thus, these samples chosen for further doping Nd3+. maximum Sa Sr based on LIR (IEu/INd) function 0.67 K-1 (at K) 0.86 %·K-1 154 K),...