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Optical and magnetic properties of CdS quantum dots (QDs) doped with europium(II) and gadolinium(III) ions were studied. l-Cysteine stabilized nanoparticles were synthesized by the colloidal method in aqueous media. The QDs obtained have a hexagonal crystal lattice. The nanoparticle size varies from 3 to 14 nm. The EPR spectra of nanoparticles prepared in different conditions were measured and analyzed. Dependences of the optical properties of nanoparticles on the reaction time and pH values were studied. The dependence of the luminescence properties of CdS QDs on the dopant ion type was established. It was shown that the increase in the reaction time and medium pH values favors a bathochromic shift of maxima in the luminescence spectra of nanoparticles.
D. O. Sagdeev; R. R. Shamilov; V. K. Voronkova; A. A. Sukhanov; Yu. G. Galyametdinov. Lanthanide-doped CdS quantum dots: luminescence and paramagnetic properties. Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 2020, 69, 1749 -1754.
AMA StyleD. O. Sagdeev, R. R. Shamilov, V. K. Voronkova, A. A. Sukhanov, Yu. G. Galyametdinov. Lanthanide-doped CdS quantum dots: luminescence and paramagnetic properties. Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 2020; 69 (9):1749-1754.
Chicago/Turabian StyleD. O. Sagdeev; R. R. Shamilov; V. K. Voronkova; A. A. Sukhanov; Yu. G. Galyametdinov. 2020. "Lanthanide-doped CdS quantum dots: luminescence and paramagnetic properties." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 69, no. 9: 1749-1754.
Synthesis of nanoparticles doped with various ions can significantly expand their functionality. The conditions of synthesis exert significant influence on the distribution nature of doped ions and therefore the physicochemical properties of nanoparticles. In this paper, a correlation between the conditions of synthesis of manganese-containing cadmium sulfide or zinc sulfide nanoparticles and their optical and magnetic properties is analyzed. Electron paramagnetic resonance was used to study the distribution of manganese ions in nanoparticles and the intensity of interaction between them depending on the conditions of synthesis of nanoparticles, the concentration of manganese, and the type of initial semiconductor. The increase of manganese concentration is shown to result in the formation of smaller CdS-based nanoparticles. Luminescent properties of nanoparticles were studied. The 580 nm peak, which is typical for manganese ions, becomes more distinguished with the increase of their concentration and the time of synthesis.
Yuriy G. Galyametdinov; Dmitriy O. Sagdeev; Andrey A. Sukhanov; Violeta K. Voronkova; Radik R. Shamilov. Monitoring of the Mechanism of Mn Ions Incorporation into Quantum Dots by Optical and EPR Spectroscopy †. Photonics 2019, 6, 107 .
AMA StyleYuriy G. Galyametdinov, Dmitriy O. Sagdeev, Andrey A. Sukhanov, Violeta K. Voronkova, Radik R. Shamilov. Monitoring of the Mechanism of Mn Ions Incorporation into Quantum Dots by Optical and EPR Spectroscopy †. Photonics. 2019; 6 (4):107.
Chicago/Turabian StyleYuriy G. Galyametdinov; Dmitriy O. Sagdeev; Andrey A. Sukhanov; Violeta K. Voronkova; Radik R. Shamilov. 2019. "Monitoring of the Mechanism of Mn Ions Incorporation into Quantum Dots by Optical and EPR Spectroscopy †." Photonics 6, no. 4: 107.
Paramagnetic Mn:CdS nanoparticles were synthesized by a colloidal method in a nonpolar solvent. The temperature and duration of synthesis were varied. The sizes of synthesized nanoparticles were determined by X-ray diffraction and dynamic light scattering in a crystal state and in an organic solvent. It was studied how optical (electronic absorption and luminescence spectra) and magnetic properties of synthesized compounds change with the reaction conditions. Longer synthesis intensifies migration of manganese ions from the bulk phase of nanoparticles to their surface. This effect is confirmed by changes in electron paramagnetic resonance spectra which characterize the ratio between different types of manganese ions and the shift of luminescence peaks to a shorter wave range.
Yuriy Galyametdinov; Dmitriy O. Sagdeev; Violeta Voronkova; Andrei Sukhanov; Radik Shamilov. The dependence of paramagnetic and optical characteristics of Mn:CdS nanoparticles on high-temperature synthesis conditions. Materials Research Express 2018, 5, 075009 .
AMA StyleYuriy Galyametdinov, Dmitriy O. Sagdeev, Violeta Voronkova, Andrei Sukhanov, Radik Shamilov. The dependence of paramagnetic and optical characteristics of Mn:CdS nanoparticles on high-temperature synthesis conditions. Materials Research Express. 2018; 5 (7):075009.
Chicago/Turabian StyleYuriy Galyametdinov; Dmitriy O. Sagdeev; Violeta Voronkova; Andrei Sukhanov; Radik Shamilov. 2018. "The dependence of paramagnetic and optical characteristics of Mn:CdS nanoparticles on high-temperature synthesis conditions." Materials Research Express 5, no. 7: 075009.
Yuriy Galyametdinov; D. O. Sagdeev; V. K. Voronkova; A. A. Sukhanov; R. R. Shamilov. Paramagnetic Mn:CdS/ZnS quantum dots: synthesis, luminescence, and magnetic properties. Russian Chemical Bulletin 2018, 67, 172 -175.
AMA StyleYuriy Galyametdinov, D. O. Sagdeev, V. K. Voronkova, A. A. Sukhanov, R. R. Shamilov. Paramagnetic Mn:CdS/ZnS quantum dots: synthesis, luminescence, and magnetic properties. Russian Chemical Bulletin. 2018; 67 (1):172-175.
Chicago/Turabian StyleYuriy Galyametdinov; D. O. Sagdeev; V. K. Voronkova; A. A. Sukhanov; R. R. Shamilov. 2018. "Paramagnetic Mn:CdS/ZnS quantum dots: synthesis, luminescence, and magnetic properties." Russian Chemical Bulletin 67, no. 1: 172-175.
R. R. Shamilov; V. I. Nuzhdin; V. F. Valeev; Yu. G. Galyametdinov; A. L. Stepanov. Enhancement of photoluminescence of the CdSe/CdS quantum dots on quartz substrates in the presence of silver nanoparticles. Technical Physics 2016, 61, 1698 -1703.
AMA StyleR. R. Shamilov, V. I. Nuzhdin, V. F. Valeev, Yu. G. Galyametdinov, A. L. Stepanov. Enhancement of photoluminescence of the CdSe/CdS quantum dots on quartz substrates in the presence of silver nanoparticles. Technical Physics. 2016; 61 (11):1698-1703.
Chicago/Turabian StyleR. R. Shamilov; V. I. Nuzhdin; V. F. Valeev; Yu. G. Galyametdinov; A. L. Stepanov. 2016. "Enhancement of photoluminescence of the CdSe/CdS quantum dots on quartz substrates in the presence of silver nanoparticles." Technical Physics 61, no. 11: 1698-1703.
Yu. G. Galyametdinov; R. R. Shamilov; V. I. Nuzhdin; V. F. Valeev; A. L. Stepanov. Luminescence of CdSe quantum dots near a layer of silver nanoparticles ion-synthesized in sapphire. Technical Physics Letters 2016, 42, 1067 -1070.
AMA StyleYu. G. Galyametdinov, R. R. Shamilov, V. I. Nuzhdin, V. F. Valeev, A. L. Stepanov. Luminescence of CdSe quantum dots near a layer of silver nanoparticles ion-synthesized in sapphire. Technical Physics Letters. 2016; 42 (11):1067-1070.
Chicago/Turabian StyleYu. G. Galyametdinov; R. R. Shamilov; V. I. Nuzhdin; V. F. Valeev; A. L. Stepanov. 2016. "Luminescence of CdSe quantum dots near a layer of silver nanoparticles ion-synthesized in sapphire." Technical Physics Letters 42, no. 11: 1067-1070.
Yu. G. Galyametdinov; R. R. Shamilov; A. L. Stepanov. Plasmon-enhanced luminescence of CdSe quantum dots on the porous silicon with silver nanoparticles. Russian Chemical Bulletin 2016, 65, 2773 -2775.
AMA StyleYu. G. Galyametdinov, R. R. Shamilov, A. L. Stepanov. Plasmon-enhanced luminescence of CdSe quantum dots on the porous silicon with silver nanoparticles. Russian Chemical Bulletin. 2016; 65 (11):2773-2775.
Chicago/Turabian StyleYu. G. Galyametdinov; R. R. Shamilov; A. L. Stepanov. 2016. "Plasmon-enhanced luminescence of CdSe quantum dots on the porous silicon with silver nanoparticles." Russian Chemical Bulletin 65, no. 11: 2773-2775.
Photoluminescence of the composite layers of poly(N-vinylcarbazole) with CdSe/CdS core/shell quantum dots deposited on quartz glass with ion-synthesized silver nanoparticles was studied. The nanoparticles included in the quartz glass showed local surface plasmon resonance. Excitation of the composite luminescence in the spectral region of the plasmon resonance absorption resulted in an increase of the emission intensity of the polymer and quantum dots located in the near field of the silver nanoparticles. It was shown that luminescence enhancement of poly(N-vinylcarbazole) and the quantum dots occurs under excitation at different wavelengths specific to each component of the composite material.
R. R. Shamilov; V. I. Nuzhdin; V. F. Valeev; Yuriy Galyametdinov; Andrey Stepanov. Photoluminescence of Composite Films of Poly(N-Vinylcarbazole) with CdSe/CdS Core/Shell Quantum Dots Located Near the Layer of Silver Nanoparticles on a Dielectric Material. Journal of Applied Spectroscopy 2015, 82, 773 -778.
AMA StyleR. R. Shamilov, V. I. Nuzhdin, V. F. Valeev, Yuriy Galyametdinov, Andrey Stepanov. Photoluminescence of Composite Films of Poly(N-Vinylcarbazole) with CdSe/CdS Core/Shell Quantum Dots Located Near the Layer of Silver Nanoparticles on a Dielectric Material. Journal of Applied Spectroscopy. 2015; 82 (5):773-778.
Chicago/Turabian StyleR. R. Shamilov; V. I. Nuzhdin; V. F. Valeev; Yuriy Galyametdinov; Andrey Stepanov. 2015. "Photoluminescence of Composite Films of Poly(N-Vinylcarbazole) with CdSe/CdS Core/Shell Quantum Dots Located Near the Layer of Silver Nanoparticles on a Dielectric Material." Journal of Applied Spectroscopy 82, no. 5: 773-778.