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Szűcsová J, Zeleňáková A, Beňová E, Nagy Ľ, Orendáč M, Huntošová V, Šoltésová M, Kohout J, Herynek V, Zeleňák V. Nanocomposite based on Gd 2O 3 nanoparticles and drug 5-fluorouracil as potential theranostic nano-cargo system. Heliyon 2023; 9:e20975. [PMID: 37928043 PMCID: PMC10623176 DOI: 10.1016/j.heliyon.2023.e20975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/28/2023] [Accepted: 10/12/2023] [Indexed: 11/07/2023] Open
Abstract
We have prepared silica matrix with hexagonal symmetry of pores (SBA-15) and loaded it with anticancer drug 5-Fluorouracil (5-FU) to promote it as a drug delivery system. Gd2O3 nanoparticles were incorporated into the matrix to enhance nanosystems applicability as contrast agent for MRI, thus enabled this nanocomposite to be used as multifunctional nano-based therapeutic agent. Drug release profile was obtained by UV-VIS spectroscopy, and it indicates the prolongated release of 5-FU during the first hours and the total release after 5 h. The cytotoxicity tests using MTT-assay, fluorescent microscopy, bright-field microscopy, and flow cytometry were carried out using human glioma U87 MG cells and SK BR 3 cells. The nanocomposite with anticancer drug (Gd2O3/SBA-15/5FU) showed toxic behaviour towards studied cells, unlike nanocomposite without drug (Gd2O3/SBA-15) that was non-toxic. Our drug delivery system was designed to minimalize negative effect of Gd3+ ions at magnetic resonance imaging and drug 5-FU on healthy cells due to their encapsulation into biocompatible silica matrix, so the Gd3+ ions are more stable (in comparison to chelates), lower therapeutic dose of 5-FU is needed and its prolongated release from silica pores was confirmed. Very good T1 contrast in MR images was observed even at low concentrations, thus this nanosystem can be potentially used as contrast imaging agent.
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Affiliation(s)
- Jaroslava Szűcsová
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 040 01 Kosice, Slovakia
| | - Adriana Zeleňáková
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 040 01 Kosice, Slovakia
| | - Eva Beňová
- Institute of Chemistry, P. J. Šafárik University, Moyzesova 11, 040 01 Kosice, Slovakia
| | - Ľuboš Nagy
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 040 01 Kosice, Slovakia
| | - Martin Orendáč
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 040 01 Kosice, Slovakia
- Department of Solid State Engineering, University of Chemistry & Technology, Technická 5, 166 28 Prague, Czech Republic
| | - Veronika Huntošová
- Center for Interdisciplinary Biosciences, P. J. Šafárik University, Jesenná 5, 040 01 Kosice, Slovakia
| | - Mária Šoltésová
- Department of Low Temperature Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 182 00 Prague, Czech Republic
| | - Jaroslav Kohout
- Department of Low Temperature Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 182 00 Prague, Czech Republic
| | - Vít Herynek
- First Faculty of Medicine, Charles University, Center for Advanced Preclinical Imaging (CAPI), Salmovská 3, 120 00 Prague, Czech Republic
| | - Vladimír Zeleňák
- Institute of Chemistry, P. J. Šafárik University, Moyzesova 11, 040 01 Kosice, Slovakia
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Almáši M, Matiašová AA, Šuleková M, Beňová E, Ševc J, Váhovská L, Lisnichuk M, Girman V, Zeleňáková A, Hudák A, Zeleňák V. In vivo study of light-driven naproxen release from gated mesoporous silica drug delivery system. Sci Rep 2021; 11:20191. [PMID: 34642409 PMCID: PMC8511123 DOI: 10.1038/s41598-021-99678-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/29/2021] [Indexed: 11/18/2022] Open
Abstract
A drug delivery system based on mesoporous particles MCM-41 was post-synthetically modified by photo-sensitive ligand, methyl-(2E)-3-(4-(triethoxysilyl)-propoxyphenyl)-2-propenoate (CA) and the pores of MCM-41 particles were loaded with Naproxen sodium salt (NAP). The CA was used as a photoactive molecule that can undergo a reversible photo-dimerization by [2π + 2π] cycloaddition when irradiated with UV light of specific wavelengths. Thus, it has a function of gate-keeper that is responsible for opening/closing the pores and minimizing premature release of NAP. The physicochemical properties of the prepared system were studied by infrared spectroscopy (IR), nitrogen adsorption measurements, thermogravimetric analysis (TGA), scanning transmission electron microscopy (STEM) and energy dispersive X-ray spectroscopy (EDX). The mechanism of the opening/closing pores was confirmed by UV measurements. In vitro and in vivo drug release experiments and the concentration of released NAP was determined by UV spectroscopy and high-performance liquid chromatography (HPLC). In vivo drug release in the blood circulatory system of rats has demonstrated the effective photo-cleavage reaction of CA molecules after UV-light stimulation. The localization and morphological changes of the particles were studied in the blood and liver of rats at different time intervals. The particles in the blood have been shown to retain their original rod-like shape, and the particles in the liver have been hydrolysed, which has resulted in spherical shape with a reduced size.
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Affiliation(s)
- Miroslav Almáši
- Department of Inorganic Chemistry, Institute of Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovakia
| | - Anna Alexovič Matiašová
- Department of Cell Biology, Institute of Biology and Ecology, Faculty of Science, P. J. Šafárik University, Šrobárová 2, 041 54, Kosice, Slovakia
| | - Monika Šuleková
- Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, The University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81, Kosice, Slovakia
| | - Eva Beňová
- Department of Inorganic Chemistry, Institute of Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovakia
| | - Juraj Ševc
- Department of Cell Biology, Institute of Biology and Ecology, Faculty of Science, P. J. Šafárik University, Šrobárová 2, 041 54, Kosice, Slovakia
| | - Lucia Váhovská
- Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, The University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81, Kosice, Slovakia
| | - Maksym Lisnichuk
- Department of Condensed Matter Physics, Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54, Kosice, Slovakia
| | - Vladimír Girman
- Department of Condensed Matter Physics, Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54, Kosice, Slovakia
| | - Adriana Zeleňáková
- Department of Condensed Matter Physics, Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54, Kosice, Slovakia
| | - Alexander Hudák
- Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, The University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81, Kosice, Slovakia
| | - Vladimír Zeleňák
- Department of Inorganic Chemistry, Institute of Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovakia.
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Király N, Zeleňák V, Lenártová N, Zeleňáková A, Čižmár E, Almáši M, Meynen V, Hovan A, Gyepes R. Novel Lanthanide(III) Porphyrin-Based Metal-Organic Frameworks: Structure, Gas Adsorption, and Magnetic Properties. ACS Omega 2021; 6:24637-24649. [PMID: 34604646 PMCID: PMC8482518 DOI: 10.1021/acsomega.1c03327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
The present work focuses on the hydrothermal synthesis and properties of porous coordination polymers of metal-porphyrin framework (MPF) type, namely, {[Pr4(H2TPPS)3]·11H2O} n (UPJS-10), {[Eu/Sm(H2TPPS)]·H3O+·16H2O} n (UPJS-11), and {[Ce4(H2TPPS)3]·11H2O} n (UPJS-12) (H2TPPS = 4,4',4″,4‴-(porphyrin-5,10,15,20-tetrayl)tetrakisbenzenesulfonate(4-)). The compounds were characterized using several analytical techniques: infrared spectroscopy, thermogravimetric measurements, elemental analysis, gas adsorption measurements, and single-crystal structure analysis (SXRD). The results of SXRD revealed a three-dimensional open porous framework containing crossing cavities propagating along all crystallographic axes. Coordination of H2TPPS4- ligands with Ln(III) ions leads to the formation of 1D polymeric chains propagating along the c crystallographic axis. Argon sorption measurements at -186 °C show that the activated MPFs have apparent BET surface areas of 260 m2 g-1 (UPJS-10) and 230 m2 g-1 (UPJS-12). Carbon dioxide adsorption isotherms at 0 °C show adsorption capacities up to 1 bar of 9.8 wt % for UPJS-10 and 8.6 wt % for UPJS-12. At a temperature of 20 °C, the respective CO2 adsorption capacities decreased to 6.95 and 5.99 wt %, respectively. The magnetic properties of UPJS-10 are characterized by the presence of a close-lying nonmagnetic ground singlet and excited doublet states in the electronic spectrum of Pr(III) ions. A much larger energy difference was suggested between the two lowest Kramers doublets of Ce(III) ions in UPJS-12. Finally, the analysis of X-band EPR spectra revealed the presence of radical spins, which were tentatively assigned to be originating from the porphyrin ligands.
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Affiliation(s)
- Nikolas Király
- Department
of Inorganic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, Košice SK-041 54, Slovakia
| | - Vladimír Zeleňák
- Department
of Inorganic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, Košice SK-041 54, Slovakia
| | - Nina Lenártová
- Department
of Inorganic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, Košice SK-041 54, Slovakia
| | - Adriana Zeleňáková
- Institute
of Physics, P. J. Šafárik
University, Park Angelinum 9, Košice SK-04154, Slovakia
| | - Erik Čižmár
- Institute
of Physics, P. J. Šafárik
University, Park Angelinum 9, Košice SK-04154, Slovakia
| | - Miroslav Almáši
- Department
of Inorganic Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, Košice SK-041 54, Slovakia
| | - Vera Meynen
- Laboratory
of Adsorption and Catalysis, University
of Antwerp, Universiteitsplein
1, Wilrijk B-2610, Belgium
| | - Andrej Hovan
- Institute
of Physics, P. J. Šafárik
University, Park Angelinum 9, Košice SK-04154, Slovakia
| | - Róbert Gyepes
- Department
of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague CZ-128
43, Czech Republic
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Zeleňáková A, Szűcsová J, Nagy Ľ, Girman V, Zeleňák V, Huntošová V. Magnetic Characterization and Moderate Cytotoxicity of Magnetic Mesoporous Silica Nanocomposite for Drug Delivery of Naproxen. Nanomaterials (Basel) 2021; 11:901. [PMID: 33915918 PMCID: PMC8066468 DOI: 10.3390/nano11040901] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/18/2021] [Accepted: 03/26/2021] [Indexed: 11/16/2022]
Abstract
In this study, we describe the magnetic and structural properties and cytotoxicity of drug delivery composite (DDC) consisting of hexagonally ordered mesoporous silica, iron oxide magnetic nanoparticles (Fe2O3), and the drug naproxen (Napro). The nonsteroidal anti-inflammatory drug (NSAID) naproxen was adsorbed into the pores of MCM-41 silica after the ultra-small superparamagnetic iron oxide nanoparticles (USPIONs) encapsulation. Our results confirm the suppression of the Brownian relaxation process caused by a "gripping effect" since the rotation of the whole particle encapsulated in the porous system of mesoporous silica was disabled. This behavior was observed for the first time, to the best of our knowledge. Therefore, the dominant relaxation mechanism in powder and liquid form is the Néel process when the rotation of the nanoparticle's magnetic moment is responsible for the relaxation. The in vitro cytotoxicity tests were performed using human glioma U87 MG cells, and the moderate manifestation of cell death, although at high concentrations of studied systems, was observed with fluorescent labeling by AnnexinV/FITC. All our results indicate that the as-prepared MCM-41/Napro/Fe2O3 composite has a potential application as a drug nanocarrier for magnetic-targeted drug delivery.
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Affiliation(s)
- Adriana Zeleňáková
- Institute of Physics, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 040 01 Košice, Slovakia; (J.S.); (Ľ.N.); (V.G.)
| | - Jaroslava Szűcsová
- Institute of Physics, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 040 01 Košice, Slovakia; (J.S.); (Ľ.N.); (V.G.)
| | - Ľuboš Nagy
- Institute of Physics, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 040 01 Košice, Slovakia; (J.S.); (Ľ.N.); (V.G.)
| | - Vladimír Girman
- Institute of Physics, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 040 01 Košice, Slovakia; (J.S.); (Ľ.N.); (V.G.)
| | - Vladimír Zeleňák
- Institute of Chemistry, Pavol Jozef Šafárik University in Košice, Moyzesova 11, 040 01 Košice, Slovakia;
| | - Veronika Huntošová
- Center for Interdisciplinary Biosciences, Pavol Jozef Šafárik University in Košice, Jesenna 5, 040 01 Košice, Slovakia;
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5
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Žid L, Zeleňák V, Almáši M, Zeleňáková A, Szücsová J, Bednarčík J, Šuleková M, Hudák A, Váhovská L. Mesoporous Silica as a Drug Delivery System for Naproxen: Influence of Surface Functionalization. Molecules 2020; 25:molecules25204722. [PMID: 33076274 PMCID: PMC7587581 DOI: 10.3390/molecules25204722] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 12/23/2022] Open
Abstract
In this work we describe the relationship between surface modification of hexagonally ordered mesoporous silica SBA-15 and loading/release characteristics of nonsteroidal anti-inflammatory drug (NSAID) naproxen. Mesoporous silica (MPS) was modified with 3-aminopropyl, phenyl and cyclohexyl groups by grafting method. Naproxen was adsorbed into pores of the prepared MPS from ethanol solution using a solvent evaporation method. The release of the drug was performed in buffer medium at pH 2 and physiological solution at pH 7.4. Parent MPSs as well as naproxen loaded MPSs were characterized using physicochemical techniques such as nitrogen adsorption/desorption, thermogravimetric analysis (TG), Zeta potential analysis, Fourier transform infrared spectroscopy (FT-IR), and elemental analysis. The amount of naproxen released from the MPSs into the medium was determined by high-performance liquid chromatography (HPLC). It was shown that the adsorption and desorption characteristics of naproxen are dependent on the pH of the solution and the surface functionalization of the host.
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Affiliation(s)
- Lukáš Žid
- Department of Inorganic Chemistry Faculty of Science, P.J. Šafárik University, Moyzesova 11, SK-041 54 Košice, Slovakia; (L.Ž.); (M.A.)
| | - Vladimír Zeleňák
- Department of Inorganic Chemistry Faculty of Science, P.J. Šafárik University, Moyzesova 11, SK-041 54 Košice, Slovakia; (L.Ž.); (M.A.)
- Correspondence: ; Tel.: +421552342343
| | - Miroslav Almáši
- Department of Inorganic Chemistry Faculty of Science, P.J. Šafárik University, Moyzesova 11, SK-041 54 Košice, Slovakia; (L.Ž.); (M.A.)
| | - Adriana Zeleňáková
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 04001 Košice, Slovakia; (A.Z.); (J.S.); (J.B.)
| | - Jaroslava Szücsová
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 04001 Košice, Slovakia; (A.Z.); (J.S.); (J.B.)
| | - Jozef Bednarčík
- Institute of Physics, P. J. Šafárik University, Park Angelinum 9, 04001 Košice, Slovakia; (A.Z.); (J.S.); (J.B.)
| | - Monika Šuleková
- Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, The University of Veterinary Medicine and Pharmacy, 04181 Košice, Slovakia; (M.Š.); (A.H.); (L.V.)
| | - Alexander Hudák
- Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, The University of Veterinary Medicine and Pharmacy, 04181 Košice, Slovakia; (M.Š.); (A.H.); (L.V.)
| | - Lucia Váhovská
- Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, The University of Veterinary Medicine and Pharmacy, 04181 Košice, Slovakia; (M.Š.); (A.H.); (L.V.)
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Žid L, Zeleňák V, Girman V, Bednarčík J, Zeleňáková A, Szűcsová J, Hornebecq V, Hudák A, Šuleková M, Váhovská L. Doxorobicin as cargo in a redox-responsive drug delivery system capped with water dispersible ZnS nanoparticles. RSC Adv 2020; 10:15825-15835. [PMID: 35493685 PMCID: PMC9052939 DOI: 10.1039/d0ra02091e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/13/2020] [Indexed: 11/29/2022] Open
Abstract
In this work, we have prepared and investigated a redox-responsive drug delivery system (DDS) based on a porous carrier. Doxorubicin (DOX), a chemotherapy medication for treatment of different kinds of cancer, was used as a model drug in the study. DOX was loaded in ordered hexagonal mesoporous silica SBA-15, a nanoporous material with good biocompatibility, stability, large pore size and specific surface area (SBET = 908 m2 g−1, VP = 0.79 cm3 g−1, d = 5.9 nm) and easy surface modification. To prepare the redox-responsive system, cystamine derivative ligands, with redox active disulphide linkers were grafted onto the surface of SBA-15. To ensure no significant premature release of DOX from the porous system, thioglycolic acid modified ZnS nanoparticles (ZnS–COOH NPs) were used as pore capping agents. The grafted redox-responsive cystamine derivative ligand containing disulphide linkers was bonded by a peptide bond to the thioglycolic acid groups of ZnS–COOH NPs, capping the pores. Once the disulphide bond was cleaved, the ZnS–COOH NPs caps were released and pores were opened to deliver the DOX cargo. The dithiol bond was cleavable by redox active molecules such as dithiothreitol (DTT) or glutathione, the concentration of which in cancer cells is 4 times higher than in healthy cells. The redox release of DOX was studied in two different media, physiological saline solution with DTT and saline without DTT. The prepared DDS proved the concept of redox responsive release. All samples were characterised by powder X-ray diffraction (XRD), transition electron microscopy (TEM), nitrogen adsorption/desorption at 77 K, Fourier-transform infrared spectroscopy (FTIR), thermal analysis and zeta potential measurements. The presence of semiconducting ZnS nanoparticle caps on the pore openings was detected by magnetic measurements using SQUID magnetometry showing that such cargo systems could be monitored using magnetic measurements which opens up the possibilities of using such drug delivery systems as theranostic agents. Redox-responsive drug delivery system was studied. ZnS nanoparticles served as pore capping agent to prevent premature release of anticancer drug. Such cargo can be monitored by magnetic field which opens possibilities its use in theranostics.![]()
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Affiliation(s)
- Lukáš Žid
- Department of Inorganic Chemistry Faculty of Science
- P. J. Šafárik University
- SK-041 54 Košice
- Slovak Republic
| | - Vladimír Zeleňák
- Department of Inorganic Chemistry Faculty of Science
- P. J. Šafárik University
- SK-041 54 Košice
- Slovak Republic
| | - Vladimír Girman
- Institute of Physics
- P. J. Šafárik University
- 04001 Košice
- Slovakia
| | - Jozef Bednarčík
- Institute of Physics
- P. J. Šafárik University
- 04001 Košice
- Slovakia
| | | | | | | | - Alexander Hudák
- Department of Chemistry
- Biochemistry and Biophysics
- Institute of Pharmaceutical Chemistry
- The University of Veterinary Medicine and Pharmacy in Košice
- Košice 041 81
| | - Monika Šuleková
- Department of Chemistry
- Biochemistry and Biophysics
- Institute of Pharmaceutical Chemistry
- The University of Veterinary Medicine and Pharmacy in Košice
- Košice 041 81
| | - Lucia Váhovská
- Department of Chemistry
- Biochemistry and Biophysics
- Institute of Pharmaceutical Chemistry
- The University of Veterinary Medicine and Pharmacy in Košice
- Košice 041 81
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7
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Zeleňáková A, Hrubovčák P, Kapusta O, Kučerka N, Kuklin A, Ivankov O, Zeleňák V. Size and distribution of the iron oxide nanoparticles in SBA-15 nanoporous silica via SANS study. Sci Rep 2019; 9:15852. [PMID: 31676829 PMCID: PMC6825206 DOI: 10.1038/s41598-019-52417-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 10/17/2019] [Indexed: 01/18/2023] Open
Abstract
Structural characteristics of nanocomposite series consisting of iron oxide nanoparticles (NPs) embedded in the regular pores of amorphous silica matrix (SBA-15) were investigated by means of small angle neutron scattering (SANS). By virtue of unique neutron properties, insight into the inner structure and matter organization of this kind of systems was facilitated for the first time. Based on rigorous experimental support, fundamental model describing the neutron scattering intensity distribution was proposed by assuming general composite structural features. Model application to SANS data confirmed the presence of iron oxide NPs in the body of examined matrices, providing additional information on their shape, concentration and size distribution. Scattering superposition principle employed in the model conception allows for tailoring its fundamental characteristics, and renders it a potent and versatile tool for a wide range of applications.
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Affiliation(s)
- Adriana Zeleňáková
- P. J. Šafárik University, Department of Solid State Physics, Košice, 041 54, Slovakia.
| | - Pavol Hrubovčák
- P. J. Šafárik University, Department of Solid State Physics, Košice, 041 54, Slovakia
- Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, 141980, Russia
| | - Ondrej Kapusta
- P. J. Šafárik University, Department of Solid State Physics, Košice, 041 54, Slovakia
| | - Norbert Kučerka
- Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, 141980, Russia
- Comenius University in Bratislava, Department of Physical Chemistry of Drugs, Bratislava, 832 32, Slovakia
| | - Aleksander Kuklin
- Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, 141980, Russia
- Moscow Institute of Physics and Technology, Institutsky per. 9, Dolgoprudny, Moscow Region, 141700, Russia
| | - Oleksandr Ivankov
- Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, 141980, Russia
| | - Vladimír Zeleňák
- P. J. Šafárik University, Department of Inorganic Chemistry, Košice, 041 54, Slovakia
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8
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Zeleňák V, Zeleňáková A, Kapusta O, Hrubovčák P, Girman V, Bednarčík J. Fe 2O 3 and Gd 2O 3 nanoparticles loaded in mesoporous silica: insights into influence of NPs concentration and silica dimensionality. RSC Adv 2019; 9:3679-3687. [PMID: 35518101 PMCID: PMC9060262 DOI: 10.1039/c8ra05576a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 01/07/2019] [Indexed: 12/01/2022] Open
Abstract
Fine Fe2O3 and Gd2O3 magnetic nanoparticles (NPs) with sizes 7 nm and 10 nm embedded into mesoporous silica have been prepared using a wet-impregnation method. A comparative study of the reactant concentration along with the hosting matrix symmetry on mesostructuring and the magnetic properties of the nanocomposites have been investigated. Reactants with four different concentrations of Fe3+ and Gd3+ ions and silica matrices with two different kinds of symmetry (hexagonal and cubic) have been utilized for the study. The structural characterization of the samples has been carried out by the N2 adsorption/desorption method, high-energy X-ray diffraction (HE-XRD), TG/DTA, and high resolution transmission electron microscopy (HRTEM). The magnetic properties of the nanocomposites have been examined by means of SQUID magnetometry. It has been found that a range of different magnetic states (diamagnetic, paramagnetic, ferromagnetic, superparamagnetic) can be induced by the feasible tailoring of the particle concentration, the porous matrix symmetry and the composition. Furthermore, the existence of a “critical concentration limit” for embedding the particles within the body of the matrix has been confirmed. Exceeding the limit results in the expulsion of nanoparticles on the outer surface of the mesoporous matrix. Revelation of the relationships between particle concentration, matrix symmetry and magnetic properties of the particular composite reported in this study may facilitate the design and construction of advanced intelligent nanodevices. The concentration of nanoparticles inside the pores and the symmetry of the porous matrix significantly affected the magnetic properties.![]()
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Affiliation(s)
- V. Zeleňák
- Department of Inorganic Chemistry
- Faculty of Sciences
- P. J. Safarik University in Kosice
- 04054 Košice
- Slovakia
| | - A. Zeleňáková
- Department of Condensed Matter Physics
- Faculty of Sciences
- P. J. Safarik University in Kosice
- 04054 Košice
- Slovakia
| | - O. Kapusta
- Department of Condensed Matter Physics
- Faculty of Sciences
- P. J. Safarik University in Kosice
- 04054 Košice
- Slovakia
| | - P. Hrubovčák
- Department of Condensed Matter Physics
- Faculty of Sciences
- P. J. Safarik University in Kosice
- 04054 Košice
- Slovakia
| | - V. Girman
- Department of Condensed Matter Physics
- Faculty of Sciences
- P. J. Safarik University in Kosice
- 04054 Košice
- Slovakia
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9
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Almáši M, Zeleňák V, Zeleňáková A, Vargová Z, Císařová I. Characterization and magnetic properties of two novel copper(II) coordination polymers prepared by different synthetic techniques. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.10.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Iacob M, Sirbu D, Tugui C, Stiubianu G, Sacarescu L, Cozan V, Zeleňáková A, Čižmár E, Feher A, Cazacu M. Superparamagnetic amorphous iron oxide nanowires self-assembled into ordered layered structures. RSC Adv 2015. [DOI: 10.1039/c5ra10469f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The thermal decomposition of μ3-oxo trinuclear iron(iii) acetate in presence of dodecylamine and oleic acid, in trichloroacetic acid at 320 °C was optimized to obtain iron oxide nanoparticles with pure nanowire morphology.
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Affiliation(s)
- M. Iacob
- Petru Poni Institute of Macromolecular Chemistry
- Iasi
- Romania
- Institute of Chemistry of ASM
- Chisinau 2028
| | - D. Sirbu
- Institute of Chemistry of ASM
- Chisinau 2028
- Republic of Moldova
| | - C. Tugui
- Petru Poni Institute of Macromolecular Chemistry
- Iasi
- Romania
| | - G. Stiubianu
- Petru Poni Institute of Macromolecular Chemistry
- Iasi
- Romania
| | - L. Sacarescu
- Petru Poni Institute of Macromolecular Chemistry
- Iasi
- Romania
| | - V. Cozan
- Petru Poni Institute of Macromolecular Chemistry
- Iasi
- Romania
| | - A. Zeleňáková
- Institute of Physics
- Faculty of Science
- P. J. Šafárik University
- 04154 Košice
- Slovakia
| | - E. Čižmár
- Institute of Physics
- Faculty of Science
- P. J. Šafárik University
- 04154 Košice
- Slovakia
| | - A. Feher
- Institute of Physics
- Faculty of Science
- P. J. Šafárik University
- 04154 Košice
- Slovakia
| | - M. Cazacu
- Petru Poni Institute of Macromolecular Chemistry
- Iasi
- Romania
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11
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Zeleňák V, Zeleňáková A, Kováč J. Insight into surface heterogenity of SBA-15 silica: Oxygen related defects and magnetic properties. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.01.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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