TY  - JOUR
AU  - Omelyanchik, Alexander
AU  - da Silva, Franciscarlos Gomes
AU  - Gomide, Guilherme
AU  - Kozenkov, Ivan
AU  - Depeyrot, Jerome
AU  - Aquino, Renata
AU  - Campos, Alex Fabiano Cortez
AU  - Fiorani, Dino
AU  - Peddis, Davide
AU  - Rodionova, Valeria
AU  - Jovanović, Sonja
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9857
AB  - The structural and magnetic properties of iron oxide nanoparticles obtained by the precipitation of iron ions in the presence of different amounts of citric acid were studied. The citric acid acts as a capping agent and provides control of the particle size to be obtained. The size dependence of the magnetic properties was investigated by comparing the results for ~2, 4, 6, and 8 nm particles. With decreasing the particle size, a reduction of the saturation magnetization (from ~84 to 33 Am2/kg) and an increase of coercivity (from ~32 to ~100 mT) were observed, due to the increasing role of the disordered surface. The behaviour of the zero-field cooled/field cooled magnetization curves indicates a superspin-glass freezing for 2 nm and 4 nm particle samples. Memory experiments below the freezing temperature on the 2 nm particle sample provide further evidence of a glassy magnetic state. The observation of exchange bias, due to core/shell interface exchange coupling, for 2 nm and 4 nm particle samples provides evidence of a surface spin-glass type freezing, which contributes to the observed glassy properties.
T2  - Journal of Alloys and Compounds
T1  - Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles
VL  - 883
SP  - 160779
DO  - 10.1016/j.jallcom.2021.160779
ER  - 

@article{
author = "Omelyanchik, Alexander and da Silva, Franciscarlos Gomes and Gomide, Guilherme and Kozenkov, Ivan and Depeyrot, Jerome and Aquino, Renata and Campos, Alex Fabiano Cortez and Fiorani, Dino and Peddis, Davide and Rodionova, Valeria and Jovanović, Sonja",
year = "2021",
abstract = "The structural and magnetic properties of iron oxide nanoparticles obtained by the precipitation of iron ions in the presence of different amounts of citric acid were studied. The citric acid acts as a capping agent and provides control of the particle size to be obtained. The size dependence of the magnetic properties was investigated by comparing the results for ~2, 4, 6, and 8 nm particles. With decreasing the particle size, a reduction of the saturation magnetization (from ~84 to 33 Am2/kg) and an increase of coercivity (from ~32 to ~100 mT) were observed, due to the increasing role of the disordered surface. The behaviour of the zero-field cooled/field cooled magnetization curves indicates a superspin-glass freezing for 2 nm and 4 nm particle samples. Memory experiments below the freezing temperature on the 2 nm particle sample provide further evidence of a glassy magnetic state. The observation of exchange bias, due to core/shell interface exchange coupling, for 2 nm and 4 nm particle samples provides evidence of a surface spin-glass type freezing, which contributes to the observed glassy properties.",
journal = "Journal of Alloys and Compounds",
title = "Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles",
volume = "883",
pages = "160779",
doi = "10.1016/j.jallcom.2021.160779"
}

Omelyanchik, A., da Silva, F. G., Gomide, G., Kozenkov, I., Depeyrot, J., Aquino, R., Campos, A. F. C., Fiorani, D., Peddis, D., Rodionova, V.,& Jovanović, S.. (2021). Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles. in Journal of Alloys and Compounds, 883, 160779.
https://doi.org/10.1016/j.jallcom.2021.160779

Omelyanchik A, da Silva FG, Gomide G, Kozenkov I, Depeyrot J, Aquino R, Campos AFC, Fiorani D, Peddis D, Rodionova V, Jovanović S. Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles. in Journal of Alloys and Compounds. 2021;883:160779.
doi:10.1016/j.jallcom.2021.160779 .

Omelyanchik, Alexander, da Silva, Franciscarlos Gomes, Gomide, Guilherme, Kozenkov, Ivan, Depeyrot, Jerome, Aquino, Renata, Campos, Alex Fabiano Cortez, Fiorani, Dino, Peddis, Davide, Rodionova, Valeria, Jovanović, Sonja, "Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles" in Journal of Alloys and Compounds, 883 (2021):160779,
https://doi.org/10.1016/j.jallcom.2021.160779 . .

TY  - JOUR
AU  - Motorzhina, Anna
AU  - Jovanović, Sonja
AU  - Belyaev, Victor K.
AU  - Murzin, Dmitry
AU  - Pshenichnikov, Stanislav
AU  - Kolesnikova, Valeria G.
AU  - Omelyanchik, Alexander S.
AU  - Gazvoda, Lea
AU  - Spreitzer, Matjaž
AU  - Panina, Larissa
AU  - Rodionova, Valeria
AU  - Vukomanović, Marija
AU  - Levada, Kateryna
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10099
AB  - The combination of plasmonic material and magnetic metal oxide nanoparticles is widely used in multifunctional nanosystems. Here we propose a method for the fabrication of a gold/cobalt ferrite nanocomposite for biomedical applications. The composite includes gold cores of ~10 nm in diameter coated with arginine, which are surrounded by small cobalt ferrite nanoparticles with diameters of ~5 nm covered with dihydrocaffeic acid. The structure and elemental composition, morphology and dimensions, magnetic and optical properties, and biocompatibility of new nanocomposite were studied. The magnetic properties of the composite are mostly determined by the superparamagnetic state of cobalt ferrite nanoparticles, and optical properties are influenced by the localized plasmon resonance in gold nanoparticles. The cytotoxicity of gold/cobalt ferrite nanocomposite was tested using T-lymphoblastic leukemia and peripheral blood mononuclear cells. Studied composite has selective citotoxic effect on cancerous cells while it has no cytotoxic effect on healtly cells. The results suggest that this material can be explored in the future for combined photothermal treatment and magnetic theranostic.
T2  - Processes
T1  - Innovative Gold/Cobalt Ferrite Nanocomposite: Physicochemical and Cytotoxicity Properties
VL  - 9
IS  - 12
SP  - 2264
DO  - 10.3390/pr9122264
ER  - 

@article{
author = "Motorzhina, Anna and Jovanović, Sonja and Belyaev, Victor K. and Murzin, Dmitry and Pshenichnikov, Stanislav and Kolesnikova, Valeria G. and Omelyanchik, Alexander S. and Gazvoda, Lea and Spreitzer, Matjaž and Panina, Larissa and Rodionova, Valeria and Vukomanović, Marija and Levada, Kateryna",
year = "2021",
abstract = "The combination of plasmonic material and magnetic metal oxide nanoparticles is widely used in multifunctional nanosystems. Here we propose a method for the fabrication of a gold/cobalt ferrite nanocomposite for biomedical applications. The composite includes gold cores of ~10 nm in diameter coated with arginine, which are surrounded by small cobalt ferrite nanoparticles with diameters of ~5 nm covered with dihydrocaffeic acid. The structure and elemental composition, morphology and dimensions, magnetic and optical properties, and biocompatibility of new nanocomposite were studied. The magnetic properties of the composite are mostly determined by the superparamagnetic state of cobalt ferrite nanoparticles, and optical properties are influenced by the localized plasmon resonance in gold nanoparticles. The cytotoxicity of gold/cobalt ferrite nanocomposite was tested using T-lymphoblastic leukemia and peripheral blood mononuclear cells. Studied composite has selective citotoxic effect on cancerous cells while it has no cytotoxic effect on healtly cells. The results suggest that this material can be explored in the future for combined photothermal treatment and magnetic theranostic.",
journal = "Processes",
title = "Innovative Gold/Cobalt Ferrite Nanocomposite: Physicochemical and Cytotoxicity Properties",
volume = "9",
number = "12",
pages = "2264",
doi = "10.3390/pr9122264"
}

Motorzhina, A., Jovanović, S., Belyaev, V. K., Murzin, D., Pshenichnikov, S., Kolesnikova, V. G., Omelyanchik, A. S., Gazvoda, L., Spreitzer, M., Panina, L., Rodionova, V., Vukomanović, M.,& Levada, K.. (2021). Innovative Gold/Cobalt Ferrite Nanocomposite: Physicochemical and Cytotoxicity Properties. in Processes, 9(12), 2264.
https://doi.org/10.3390/pr9122264

Motorzhina A, Jovanović S, Belyaev VK, Murzin D, Pshenichnikov S, Kolesnikova VG, Omelyanchik AS, Gazvoda L, Spreitzer M, Panina L, Rodionova V, Vukomanović M, Levada K. Innovative Gold/Cobalt Ferrite Nanocomposite: Physicochemical and Cytotoxicity Properties. in Processes. 2021;9(12):2264.
doi:10.3390/pr9122264 .

Motorzhina, Anna, Jovanović, Sonja, Belyaev, Victor K., Murzin, Dmitry, Pshenichnikov, Stanislav, Kolesnikova, Valeria G., Omelyanchik, Alexander S., Gazvoda, Lea, Spreitzer, Matjaž, Panina, Larissa, Rodionova, Valeria, Vukomanović, Marija, Levada, Kateryna, "Innovative Gold/Cobalt Ferrite Nanocomposite: Physicochemical and Cytotoxicity Properties" in Processes, 9, no. 12 (2021):2264,
https://doi.org/10.3390/pr9122264 . .

TY  - CONF
AU  - Omelyanchik, Alexander
AU  - Knežević, Nikola
AU  - Rodionova, Valeria
AU  - Salvador, Maria
AU  - Peddis, Davide
AU  - Varvaro, Gaspare
AU  - Laureti, Sara
AU  - Mraković, Ana Đ.
AU  - Kusigerski, Vladan
AU  - Illes, Erzsebet
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8749
AB  - Investigating magnetic properties of nanoparticles dispersed in a fluid is catching an increasing attention for their wide range of applications; however, a careful magnetic characterization requires low temperatures and vacuum conditions which represent a critical issue for a correct sample handling. In this paper, several experimental protocols to investigate low temperature magnetic properties of magnetic nanoparticles dispersed in fluid are described. In particular, by investigating interparticle interaction by remanence techniques at low temperature, some insight about particle aggregation in fluids has been given. © 2018 IEEE.
PB  - IEEE
C3  - 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)
T1  - Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids
SP  - 1
EP  - 5
DO  - 10.1109/NAP.2018.8915059
ER  - 

@conference{
author = "Omelyanchik, Alexander and Knežević, Nikola and Rodionova, Valeria and Salvador, Maria and Peddis, Davide and Varvaro, Gaspare and Laureti, Sara and Mraković, Ana Đ. and Kusigerski, Vladan and Illes, Erzsebet",
year = "2018",
abstract = "Investigating magnetic properties of nanoparticles dispersed in a fluid is catching an increasing attention for their wide range of applications; however, a careful magnetic characterization requires low temperatures and vacuum conditions which represent a critical issue for a correct sample handling. In this paper, several experimental protocols to investigate low temperature magnetic properties of magnetic nanoparticles dispersed in fluid are described. In particular, by investigating interparticle interaction by remanence techniques at low temperature, some insight about particle aggregation in fluids has been given. © 2018 IEEE.",
publisher = "IEEE",
journal = "2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)",
title = "Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids",
pages = "1-5",
doi = "10.1109/NAP.2018.8915059"
}

Omelyanchik, A., Knežević, N., Rodionova, V., Salvador, M., Peddis, D., Varvaro, G., Laureti, S., Mraković, A. Đ., Kusigerski, V.,& Illes, E.. (2018). Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids. in 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)
IEEE., 1-5.
https://doi.org/10.1109/NAP.2018.8915059

Omelyanchik A, Knežević N, Rodionova V, Salvador M, Peddis D, Varvaro G, Laureti S, Mraković AĐ, Kusigerski V, Illes E. Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids. in 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP). 2018;:1-5.
doi:10.1109/NAP.2018.8915059 .

Omelyanchik, Alexander, Knežević, Nikola, Rodionova, Valeria, Salvador, Maria, Peddis, Davide, Varvaro, Gaspare, Laureti, Sara, Mraković, Ana Đ., Kusigerski, Vladan, Illes, Erzsebet, "Experimental Protocols for Measuring Properties of Nanoparticles Dispersed in Fluids" in 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP) (2018):1-5,
https://doi.org/10.1109/NAP.2018.8915059 . .