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47 results on '"Osminkina, Liubov A."'

10. Sensing Cells-Peptide Hydrogel Interaction In Situ via Scanning Ion Conductance Microscopy

Author

Tikhonova, Tatiana N., primary, Kolmogorov, Vasilii S., additional, Timoshenko, Roman V., additional, Vaneev, Alexander N., additional, Cohen-Gerassi, Dana, additional, Osminkina, Liubov A., additional, Gorelkin, Petr V., additional, Erofeev, Alexander S., additional, Sysoev, Nikolay N., additional, Adler-Abramovich, Lihi, additional, and Shirshin, Evgeny A., additional

Published
2022
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14. Synthesis, Crystal, and Electronic Structure of (HpipeH 2) 2 [Sb 2 I 10 ](I 2), with I 2 Molecules Linking Sb 2 X 10 Dimers into a Polymeric Anion: A Strategy for Optimizing a Hybrid Compound's Band Gap.

Author

Bykov, Andrey V., Shestimerova, Tatiana A., Bykov, Mikhail A., Osminkina, Liubov A., Kuznetsov, Alexey N., Gontcharenko, Victoria E., and Shevelkov, Andrei V.

Subjects
ELECTRONIC structure, ELECTRONIC band structure, DIMERS, BAND gaps, CRYSTALS, REFLECTANCE spectroscopy, TRP channels
Abstract

In searching for a tool for optimizing the band gap of a hybrid compound capable of serving as a light-harvesting material in lead-free photovoltaics, we synthesized a new polyiodoantimonate (HpipeH2)2[Sb2I10](I2) and analyzed its crystal and electronic structure by application of X-ray crystal structure analysis, Raman and diffuse reflectance spectroscopies, and quantum chemical calculations. It was demonstrated that I2 molecules link Sb2I10 edge-sharing octahedra into zig-zag chains, whereas the organic cations link inorganic anionic chains into a 3D structure featuring a complex pattern of covalent bonds and non-covalent interactions. Overall, these features provide the background for forming the electronic structure with a narrow band gap of 1.41 eV, therefore being a versatile tool for optimizing the band gap of a potential light-harvesting hybrid compound. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Surface-Enhanced Raman Scattering-Active Gold-Decorated Silicon Nanowire Substrates for Label-Free Detection of Bilirubin

Author

Kartashova, Anna D., primary, Gonchar, Kirill A., additional, Chermoshentsev, Dmitry A., additional, Alekseeva, Ekaterina A., additional, Gongalsky, Maxim B., additional, Bozhev, Ivan V., additional, Eliseev, Andrei A., additional, Dyakov, Sergey A., additional, Samsonova, Jeanne V., additional, and Osminkina, Liubov A., additional

Published
2021
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18. Nonresonant CARS Imaging of Porous and Solid Silicon Nanoparticles in Human Cells

Author

Gongalsky, Maxim B., primary, Muftieva, Daniela A., additional, Saarinen, Jukka K.S., additional, Isomaki, Antti, additional, Pervushin, Nikolay V., additional, Kopeina, Gelina S., additional, Peltonen, Leena J., additional, Strachan, Clare J., additional, Zhivotovsky, Boris, additional, Santos, Hélder A., additional, and Osminkina, Liubov A., additional

Published
2021
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19. Optical Monitoring of the Biodegradation of Porous and Solid Silicon Nanoparticles

Author

Gongalsky, Maxim B., primary, Pervushin, Nikolay V., additional, Maksutova, Daria E., additional, Tsurikova, Uliana A., additional, Putintsev, Pavel P., additional, Gyuppenen, Oleg D., additional, Evstratova, Yana V., additional, Shalygina, Olga A., additional, Kopeina, Gelina S., additional, Kudryavtsev, Andrey A., additional, Zhivotovsky, Boris, additional, and Osminkina, Liubov A., additional

Published
2021
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29. Silicon nanostructures for sensing and bioimaging: general discussion

Author

Ceroni, Paola, primary, Chao, Yimin, additional, Crucho, Carina, additional, De Cola, Luisa, additional, Fucikova, Anna, additional, Goyal, Ankit, additional, Joo, Jinmyoung, additional, Kamali, Ali Reza, additional, Osminkina, Liubov, additional, Silvestrini, Simone, additional, Stephan, Holger, additional, Sun, Wei, additional, and Tang, Ming Lee, additional

Published
2020
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36. Antimicrobial Effect of Biocompatible Silicon Nanoparticles Activated Using Therapeutic Ultrasound

Author

Shevchenko, Svetlana N., primary, Burkhardt, Markus, additional, Sheval, Eugene V., additional, Natashina, Ulyana A., additional, Grosse, Christina, additional, Nikolaev, Alexander L., additional, Gopin, Alexander V., additional, Neugebauer, Ute, additional, Kudryavtsev, Andrew A., additional, Sivakov, Vladimir, additional, and Osminkina, Liubov A., additional

Published
2017
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39. Radio frequency radiation-induced hyperthermia using Si nanoparticle-based sensitizers for mild cancer therapy

Author

Tamarov, Konstantin P., Osminkina, Liubov A., Zinovyev, Sergey V., Maximova, Ksenia A., Kargina, Julia V., Gongalsky, Maxim B., Ryabchikov, Yury, Al-Kattan, Ahmed, Sviridov, Andrey P., Sentis, Marc, Ivanov, Andrey V., Nikiforov, Vladimir N., Kabashin, Andrei V., Timoshenko, Victor Yu, Lomonosov Moscow State University (MSU), Blokhin Cancer Research Center, N.N. Blokhin Russian Cancer Research Center, Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), ANR-11-IDEX-0001,Amidex,INITIATIVE D'EXCELLENCE AIX MARSEILLE UNIVERSITE(2011), ANR-10-BLAN-0919,LASERNANOBIO,Synthèse 'verte' par ablation laser de nanomatériaux colloîdaux fonctionnalisés vers la détection et la thérapie du cancer(2010), and Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)

Subjects
Radiotherapy, Nanotechnology in cancer, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic
Abstract

International audience; Offering mild, non-invasive and deep cancer therapy modality, radio frequency (RF) radiation-induced hyperthermia lacks for efficient biodegradable RF sensitizers to selectively target cancer cells and thus avoid side effects. Here, we assess crystalline silicon (Si) based nanomaterials as sensitizers for the RF-induced therapy. Using nanoparticles produced by mechanical grinding of porous silicon and ultraclean laser- ablative synthesis, we report efficient RF-induced heating of aqueous suspensions of the nanoparticles to temperatures above 45-50 degrees C under relatively low nanoparticle concentrations (< 1 mg/mL) and RF radiation intensities (1-5 W/cm(2)). For both types of nanoparticles the heating rate was linearly dependent on nanoparticle concentration, while laser-ablated nanoparticles demonstrated a remarkably higher heating rate than porous silicon-based ones for the whole range of the used concentrations from 0.01 to 0.4 mg/mL. The observed effect is explained by the Joule heating due to the generation of electrical currents at the nanoparticle/water interface. Profiting from the nanoparticle-based hyperthermia, we demonstrate an efficient treatment of Lewis lung carcinomain in vivo. Combined with the possibility of involvement of parallel imaging and treatment channels based on unique optical properties of Si-based nanomaterials, the proposed method promises a new landmark in the development of new modalities for mild cancer therapy.

Published
2014

45. Antiviral adsorption activity of porous silicon nanoparticles against different pathogenic human viruses

Author

Osminkina, Liubov A., Agafilushkina, Svetlana N., Kropotkina, Ekaterina A., Saushkin, Nikolay Yu, Bozhev, Ivan V., Abramchuk, Sergei S., Samsonova, Jeanne V., and Gambaryan, Alexandra S.

Abstract

New viral infections, due to their rapid spread, lack of effective antiviral drugs and vaccines, kill millions of people every year. The global pandemic SARS-CoV-2 in 2019–2021 has shown that new strains of viruses can widespread very quickly, causing disease and death, with significant socio-economic consequences. Therefore, the search for new methods of combating different pathogenic viruses is an urgent task, and strategies based on nanoparticles are of significant interest. This work demonstrates the antiviral adsorption (virucidal) efficacy of nanoparticles of porous silicon (PSi NPs) against various enveloped and non-enveloped pathogenic human viruses, such as Influenza A virus, Poliovirus, Human immunodeficiency virus, West Nile virus, and Hepatitis virus. PSi NPs sized 60 nm with the average pore diameter of 2 nm and specific surface area of 200 m2/g were obtained by ball-milling of electrochemically-etched microporous silicon films. After interaction with PSi NPs, a strong suppression of the infectious activity of the virus-contaminated fluid was observed, which was manifested in a decrease in the infectious titer of all studied types of viruses by approximately 104times, and corresponded to an inactivation of 99.99% viruses in vitro. This sorption capacity of PSi NPs is possible due to their microporous structure and huge specific surface area, which ensures efficient capture of virions, as confirmed by ELISAanalysis, dynamic light scattering measurements and transmission electron microscopy images. The results obtained indicate the great potential of using PSi NPs as universal viral sorbents and disinfectants for the detection and treatment of viral diseases.

Published
2021
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46. Formation of Si/SiO 2 Luminescent Quantum Dots From Mesoporous Silicon by Sodium Tetraborate/Citric Acid Oxidation Treatment.

Author

Gongalsky MB, Kargina JV, Cruz JF, Sánchez-Royo JF, Chirvony VS, Osminkina LA, and Sailor MJ

Abstract

We propose a rapid, one-pot method to generate photoluminescent (PL) mesoporous silicon nanoparticles (PSiNPs). Typically, mesoporous silicon (meso-PSi) films, obtained by electrochemical etching of monocrystalline silicon substrates, do not display strong PL because the silicon nanocrystals (nc-Si) in the skeleton are generally too large to display quantum confinement effects. Here we describe an improved approach to form photoluminescent PSiNPs from meso-PSi by partial oxidation in aqueous sodium borate (borax) solutions. The borax solution acts to simultaneously oxidize the nc-Si surface and to partially dissolve the oxide product. This results in reduction of the size of the nc-Si core into the quantum confinement regime, and formation of an insulating silicon dioxide (SiO 2 ) shell. The shell serves to passivate the surface of the silicon nanocrystals more effectively localizing excitons and increasing PL intensity. We show that the oxidation/dissolution process can be terminated by addition of excess citric acid, which changes the pH of the solution from alkaline to acidic. The process is monitored in situ by measurement of the steady-state PL spectrum from the PSiNPs. The measured PL intensity increases by 1.5- to 2-fold upon addition of citric acid, which we attribute to passivation of non-radiative recombination centers in the oxide shell. The measured PL quantum yield of the final product is up to 20%, the PL activation procedure takes <20 min, and the resulting material remains stable in aqueous dispersion for at least 1 day. The proposed phenomenological model explaining the process takes into account both pH changes in the solution and the potential increase in solubility of silicic acid due to interaction with sodium cations.

Published
2019
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47. Radio frequency radiation-induced hyperthermia using Si nanoparticle-based sensitizers for mild cancer therapy.

Author

Tamarov KP, Osminkina LA, Zinovyev SV, Maximova KA, Kargina JV, Gongalsky MB, Ryabchikov Y, Al-Kattan A, Sviridov AP, Sentis M, Ivanov AV, Nikiforov VN, Kabashin AV, and Timoshenko VY

Subjects
Animals, Carcinoma, Lewis Lung pathology, Catheter Ablation instrumentation, Crystallization, Hindlimb, Hyperthermia, Induced instrumentation, Injections, Intralesional, Lasers, Male, Mice, Mice, Inbred CBA, Nanoparticles chemistry, Neoplasm Transplantation, Porosity, Temperature, Carcinoma, Lewis Lung therapy, Catheter Ablation methods, Hyperthermia, Induced methods, Nanoparticles administration & dosage, Silicon chemistry
Abstract

Offering mild, non-invasive and deep cancer therapy modality, radio frequency (RF) radiation-induced hyperthermia lacks for efficient biodegradable RF sensitizers to selectively target cancer cells and thus avoid side effects. Here, we assess crystalline silicon (Si) based nanomaterials as sensitizers for the RF-induced therapy. Using nanoparticles produced by mechanical grinding of porous silicon and ultraclean laser-ablative synthesis, we report efficient RF-induced heating of aqueous suspensions of the nanoparticles to temperatures above 45-50 °C under relatively low nanoparticle concentrations (<1 mg/mL) and RF radiation intensities (1-5 W/cm(2)). For both types of nanoparticles the heating rate was linearly dependent on nanoparticle concentration, while laser-ablated nanoparticles demonstrated a remarkably higher heating rate than porous silicon-based ones for the whole range of the used concentrations from 0.01 to 0.4 mg/mL. The observed effect is explained by the Joule heating due to the generation of electrical currents at the nanoparticle/water interface. Profiting from the nanoparticle-based hyperthermia, we demonstrate an efficient treatment of Lewis lung carcinoma in vivo. Combined with the possibility of involvement of parallel imaging and treatment channels based on unique optical properties of Si-based nanomaterials, the proposed method promises a new landmark in the development of new modalities for mild cancer therapy.

Published
2014
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