TY - JOUR AU - Petrenko, VI AU - Artykulnyi, OP AU - Bulavin, LA AU - Almásy, László AU - Garamus, VM AU - Ivankov, OI AU - Grigoryeva, NA AU - Vekas, L AU - Kopcansky, P AU - Avdeev, MV TI - On the impact of surfactant type on the structure of aqueous ferrofluids JF - COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS J2 - COLLOID SURFACE A VL - 541 PY - 2018 SP - 222 EP - 226 PG - 5 SN - 0927-7757 DO - 10.1016/j.colsurfa.2017.03.054 UR - https://m2.mtmt.hu/api/publication/3337324 ID - 3337324 LA - English DB - MTMT ER - TY - JOUR AU - Csákiné Tombácz, Etelka AU - Turcu, Rodica AU - Socoliuc, Vlad AU - Vekas, Ladislau TI - Magnetic iron oxide nanoparticles: Recent trends in design and synthesis of magnetoresponsive nanosystems JF - BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS J2 - BIOCHEM BIOPH RES CO VL - 468 PY - 2015 IS - 3 SP - 442 EP - 453 PG - 12 SN - 0006-291X DO - 10.1016/j.bbrc.2015.08.030 UR - https://m2.mtmt.hu/api/publication/3003055 ID - 3003055 LA - English DB - MTMT ER - TY - JOUR AU - Nyergesné Illés, Erzsébet AU - Szekeres, Márta AU - Kupcsik, Edina AU - Tóth, Ildikó AU - Farkas, Katalin AU - Jedlovszky-Hajdú, Angéla AU - Csákiné Tombácz, Etelka TI - PEGylation of surfacted magnetite core-shell nanoparticles for biomedical application JF - COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS J2 - COLLOID SURFACE A VL - 460 PY - 2014 SP - 429 EP - 440 PG - 12 SN - 0927-7757 DO - 10.1016/j.colsurfa.2014.01.043 UR - https://m2.mtmt.hu/api/publication/2527470 ID - 2527470 N1 - Department of Physical Chemistry and Materials Science, University of Szeged, Aradi Vt. 1, Szeged, H-6720, Hungary Department of Laboratory Medicine, University of Szeged, Semmelweis u. 6, Szeged, H-6720, Hungary Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyva´rad te´r 4, Budapest, H-1089, Hungary Cited By :48 Export Date: 21 March 2021 CODEN: CPEAE Correspondence Address: Ille´s, E.; Department of Physical Chemistry and Materials Science, Aradi Vt. 1, Hungary Chemicals/CAS: macrogol, 25322-68-3; magnetite, 1309-38-2, 1317-61-9; oleate sodium, 143-19-1; oleic acid, 112-80-1, 115-06-0 Funding details: Hungarian Scientific Research Fund, OTKA, -2012-0047, NK 84014 Funding text 1: This work was supported by OTKA ( NK 84014 ) and TÁMOP-4.2.2.A-11/1/KONV-2012-0047 grants. This material was presented at the 27th ECIS Conference and the first author of this paper was awarded one of the ECIS2013 Elsevier Poster Prizes. Department of Physical Chemistry and Materials Science, University of Szeged, Aradi Vt. 1, Szeged, H-6720, Hungary Department of Laboratory Medicine, University of Szeged, Semmelweis u. 6, Szeged, H-6720, Hungary Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyva´rad te´r 4, Budapest, H-1089, Hungary Cited By :48 Export Date: 16 September 2021 CODEN: CPEAE Correspondence Address: Ille´s, E.; Department of Physical Chemistry and Materials Science, Aradi Vt. 1, Hungary Chemicals/CAS: macrogol, 25322-68-3; magnetite, 1309-38-2, 1317-61-9; oleate sodium, 143-19-1; oleic acid, 112-80-1, 115-06-0 Funding details: Hungarian Scientific Research Fund, OTKA, -2012-0047, NK 84014 Funding text 1: This work was supported by OTKA ( NK 84014 ) and TÁMOP-4.2.2.A-11/1/KONV-2012-0047 grants. This material was presented at the 27th ECIS Conference and the first author of this paper was awarded one of the ECIS2013 Elsevier Poster Prizes. LA - English DB - MTMT ER - TY - JOUR AU - Tóth, Ildikó AU - Szekeres, Marta AU - Turcu, Rodica AU - Sáringer, Szilárd AU - Nyergesné Illés, Erzsébet AU - Nesztor, Dániel AU - Csákiné Tombácz, Etelka TI - Mechanism of in-situ surface polymerization of gallic acid in an environmental-inspired preparation of carboxylated core-shell magnetite nanoparticles JF - LANGMUIR J2 - LANGMUIR VL - 30 PY - 2014 IS - 51 SP - 15451 EP - 15461 PG - 11 SN - 0743-7463 DO - 10.1021/la5038102 UR - https://m2.mtmt.hu/api/publication/2804759 ID - 2804759 LA - English DB - MTMT ER - TY - JOUR AU - Szekeres, Márta AU - Tóth, Ildikó AU - Nyergesné Illés, Erzsébet AU - Jedlovszky-Hajdú, Angéla AU - Zupkó, István AU - Farkas, Katalin AU - Oszlánczi, Gábor AU - Tiszlavicz, László AU - Csákiné Tombácz, Etelka TI - Chemical and Colloidal Stability of Carboxylated Core–shell Magnetite Nanoparticles Designed for Biomedical Applications JF - INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES J2 - INT J MOL SCI VL - 14 PY - 2013 SP - 14550 EP - 14574 PG - 25 SN - 1661-6596 DO - 10.3390/ijms140714550 UR - https://m2.mtmt.hu/api/publication/2340173 ID - 2340173 N1 - Department of Physical Chemistry and Materials Science, University of Szeged, Aradi Vt. 1, H-6720 Szeged, Hungary Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 1, H-6720 Szeged, Hungary Department of Laboratory Medicine, University of Szeged, Semmelweis u. 6, H-6720 Szeged, Hungary Department of Public Health, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary Department of Pathology, University of Szeged, Állomás u. 2, H-6720 Szeged, Hungary Cited By :65 Export Date: 13 January 2023 Correspondence Address: Szekeres, M.; Department of Physical Chemistry and Materials Science, Aradi Vt. 1, H-6720 Szeged, Hungary; email: szekeres@chem.u-szeged.hu Chemicals/CAS: citric acid, 126-44-3, 5949-29-1, 77-92-9, 8002-14-0; gallic acid, 149-91-7; polyacrylic acid, 74350-43-9, 87003-46-1, 9003-01-4, 9003-04-7; Acrylic Resins; Carboxylic Acids; Colloids; Ferric Compounds; Magnetite Nanoparticles; carbopol 940, 9003-01-4; ferric oxide, 1309-37-1 LA - English DB - MTMT ER - TY - JOUR AU - Csákiné Tombácz, Etelka AU - Tóth, Ildikó AU - Nesztor, Dániel AU - Nyergesné Illés, Erzsébet AU - Jedlovszky-Hajdú, Angéla AU - Szekeres, Márta AU - Vékás, L TI - Adsorption of organic acids on magnetite nanoparticles, pH-dependent colloidal stability and salt tolerance JF - COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS J2 - COLLOID SURFACE A VL - 435 PY - 2013 IS - SI SP - 91 EP - 96 PG - 6 SN - 0927-7757 DO - 10.1016/j.colsurfa.2013.01.023 UR - https://m2.mtmt.hu/api/publication/2340155 ID - 2340155 N1 - Department of Physical Chemistry and Materials Science, University of Szeged, Hungary Center of Fundamental and Advanced Technical Research, RA-TD, Timisoara, Romania Cited By :91 Export Date: 13 January 2023 CODEN: CPEAE Correspondence Address: Tombácz, E.; Department of Physical Chemistry and Materials Science, Aradi vt. 1, H-6720 Szeged, Hungary; email: tombacz@chem.u-szeged.hu Chemicals/CAS: citric acid, 126-44-3, 5949-29-1, 77-92-9, 8002-14-0; gallic acid, 149-91-7; humic acid, 1415-93-6; iron oxide, 1332-37-2 LA - English DB - MTMT ER - TY - JOUR AU - Jedlovszky-Hajdú, Angéla AU - Szekeres, Márta AU - Tóth, Ildikó AU - Bauer, Andrea Rita AU - Mihály, Judith AU - Zupkó, István AU - Csákiné Tombácz, Etelka TI - Enhanced stability of polyacrylate-coated magnetite nanoparticles in biorelevant media JF - COLLOIDS AND SURFACES B: BIOINTERFACES J2 - COLLOID SURFACE B VL - 94 PY - 2012 SP - 242 EP - 249 PG - 8 SN - 0927-7765 DO - 10.1016/j.colsurfb.2012.01.042 UR - https://m2.mtmt.hu/api/publication/1936082 ID - 1936082 AB - Magnetite nanoparticles (MNPs) were prepared by alkaline hydrolysis of Fe(II) and Fe(III) chlorides. Adsorption of polyacrylic acid (PAA) on MNPs was measured at pH=6.5+/-0.3 and I=0.01M (NaCl) to find the optimal PAA amount for MNP stabilization under physiological conditions. We detected an H-bond formation between magnetite surface groups and PAA by ATR-FTIR measurements, but bonds of metal ion-carboxylate complexes, generally cited in literature, were not identified at the given pH and ionic strength. The dependence of the electrokinetic potential and the aggregation state on the amount of added PAA at various pHs was measured by electrophoretic mobility and dynamic light-scattering methods. The electrokinetic potential of the naked MNPs was low at near physiological pH, but PAA adsorption overcharged the particles. Highly negatively charged, well-stabilized carboxylated MNPs formed via adsorption of PAA in an amount of approximately ten times of that necessary to compensate the original positive charge of the magnetite. Coagulation kinetics experiments revealed gradual enhancement of salt tolerance at physiological pH from approximately 0.001M at no added PAA up to approximately 0.5M at 1.12mmol/g PAA. The PAA-coated MNPs exert no substantial effect on the proliferation of malignant (HeLa) or non-cancerous fibroblast cells (MRC-5) as determined by means of MTT assays. LA - English DB - MTMT ER - TY - JOUR AU - Jedlovszky-Hajdú, Angéla AU - Bombelli, Francesca Baldelli AU - Monopoli, Marco P AU - Csákiné Tombácz, Etelka AU - Dawson, Kenneth A TI - Surface Coatings Shape the Protein Corona of SPIONs with Relevance to Their Application in Vivo JF - LANGMUIR J2 - LANGMUIR VL - 28 PY - 2012 IS - 42 SP - 14983 EP - 14991 PG - 9 SN - 0743-7463 DO - 10.1021/la302446h UR - https://m2.mtmt.hu/api/publication/2118531 ID - 2118531 LA - English DB - MTMT ER - TY - JOUR AU - Petrenko, VI AU - Avdeev, MV AU - Garamus, VM AU - Bulavin, LA AU - Aksenov, VL AU - Rosta, László TI - Micelle formation in aqueous solutions of dodecylbenzene sulfonic acid studied by small-angle neutron scattering JF - COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS J2 - COLLOID SURFACE A VL - 369 PY - 2010 IS - 1-3 SP - 160 EP - 164 PG - 5 SN - 0927-7757 DO - 10.1016/j.colsurfa.2010.08.023 UR - https://m2.mtmt.hu/api/publication/1421324 ID - 1421324 AB - Structure and interaction parameters of micelles in solutions of dodecylbenzene sulfonic acid (DBSA) in deuterated water are studied by small-angle neutron scattering. The dependences of micellar aggregation number, fractional charge, charge per micelle and surface potential on surfactant concentration are analyzed. A typical increase in the micelle size with the growth in the acid content is found, which can be related to the transition from spherical to rod-like micelles. The obtained data are used for estimating surfactant micelle concentration in water-based ferrofluids stabilized with DBSA. (C) 2010 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Csákiné Tombácz, Etelka AU - Bica, D AU - Jedlovszky-Hajdú, Angéla AU - Nyergesné Illés, Erzsébet AU - Majzik, Andrea AU - Vékás, L TI - Surfactant double layer stabilized magnetic nanofluids for biomedical application JF - JOURNAL OF PHYSICS-CONDENSED MATTER J2 - J PHYS CONDENS MAT VL - 20 PY - 2008 IS - 20 PG - 6 SN - 0953-8984 DO - 10.1088/0953-8984/20/20/204103 UR - https://m2.mtmt.hu/api/publication/1238027 ID - 1238027 LA - English DB - MTMT ER - TY - JOUR AU - Meriguet, G AU - Cousin, F AU - Dubois, E AU - Boue, F AU - Cebers, A AU - Farago, Bela AU - Perzynski, R TI - What tunes the structural anisotropy of magnetic fluids under a magnetic field? JF - JOURNAL OF PHYSICAL CHEMISTRY B J2 - J PHYS CHEM B VL - 110 PY - 2006 IS - 9 SP - 4378 EP - 4386 PG - 9 SN - 1520-6106 DO - 10.1021/jp0558573 UR - https://m2.mtmt.hu/api/publication/2081939 ID - 2081939 AB - In the present study, the structure of monophasic ionic magnetic fluids under a static magnetic field is explored. In these aqueous electrostatically stabilized ferrofluids, we vary both the isotropic interparticle interactions and the anisotropic dipolar magnetic interaction by tuning the ionic strength and the size of the nanoparticles. Small angle neutron scattering measurements carried out on nanoparticles dispersed in light water exhibit miscellaneous 2D nuclear patterns under a magnetic field with various q-dependent anisotropies. In this nondeuterated solvent where the magnetic scattering is negligible, this anisotropy originates from an anisotropy of the structure of the dispersions. Both the low q region and the peak of the structure factor can be anisotropic. On the scale of the interparticle distance, the structure is better defined in the direction perpendicular to the field. In the thermodynamic limit (q -> 0), the model previously described in ref 10 matches the data without any fitting parameters: the interparticle interaction is more repulsive in the direction parallel to the magnetic field. At low q, the amplitude of the anisotropy of the pattern is governed by the ratio of two interaction parameters: the reduced parameter of the anisotropic magnetic dipolar interaction, gamma/Phi, over the isotropic interaction parameter, K-T(O), in zero field, which is proportional to the second virial coefficient. LA - English DB - MTMT ER -