TY - JOUR AU - Marek, Tamás AU - Vincze, Tomáš AU - Szabó, Tamás AU - Keresztes, Zsófia TI - Conductive and photo-luminescent functionality of reconstituted particle layers prepared from electrodeposited PEDOT films JF - MATERIALS CHEMISTRY AND PHYSICS J2 - MATER CHEM PHYS VL - 314 PY - 2024 PG - 8 SN - 0254-0584 DO - 10.1016/j.matchemphys.2024.128925 UR - https://m2.mtmt.hu/api/publication/34502195 ID - 34502195 LA - English DB - MTMT ER - TY - JOUR AU - Machairas, Vassilis AU - Anagnostoupoulos, Andreas AU - Soulis, Dionysios AU - Economou, Anastasios AU - Jakab, Kristóf AU - Melios, Nikitas AU - Keresztes, Zsófia AU - Tsekenis, George AU - Wang, Joseph AU - Speliotis, Thanassis TI - Microfabricated Gold Aptasensors for the Label-Free Electrochemical Assay of Oxytetracycline Residues in Milk JF - ENGINEERING PROCEEDINGS J2 - ENGENG PROC VL - 58 PY - 2023 IS - 1 PG - 6 SN - 2673-4591 DO - 10.3390/ecsa-10-16018 UR - https://m2.mtmt.hu/api/publication/34502129 ID - 34502129 LA - English DB - MTMT ER - TY - JOUR AU - Jakab, Kristóf AU - Melios, Nikitas AU - Tsekenis, George AU - Shaban, Abdul AU - Horváth, Viola AU - Keresztes, Zsófia TI - Comparative Analysis of pH and Target-Induced Conformational Changes of an Oxytetracycline Aptamer in Solution Phase and Surface-Immobilized Form JF - BIOMOLECULES J2 - BIOMOLECULES VL - 13 PY - 2023 IS - 9 PG - 15 SN - 2218-273X DO - 10.3390/biom13091363 UR - https://m2.mtmt.hu/api/publication/34135928 ID - 34135928 AB - To date, numerous aptamer-based biosensing platforms have been developed for sensitive and selective monitoring of target analytes, relying on analyte-induced conformational changes in the aptamer for the quantification of the analyte and the conversion of the binding event into a measurable signal. Despite the impact of these conformational rearrangements on sensor performance, the influence of the environment on the structural conformations of aptamers has rarely been investigated, so the link between parameters directly influencing aptamer folding and the ability of the aptamer to bind to the target analyte remains elusive. Herein, the effect a number of variables have on an aptamer’s 3D structure was examined, including the pH of the buffering medium, as well as the anchoring of the aptamer on a solid support, with the use of two label-free techniques. Circular dichroism spectroscopy was utilized to study the conformation of an aptamer in solution along with any changes induced to it by the environment (analyte binding, pH, composition and ionic strength of the buffer solution), while quartz crystal microbalance with dissipation monitoring was employed to investigate the surface-bound aptamer’s behavior and performance. Analysis was performed on an aptamer against oxytetracycline, serving as a model system, representative of aptamers selected against small molecule analytes. The obtained results highlight the influence of the environment on the folding and thus analyte-binding capacity of an aptamer and emphasize the need to deploy appropriate surface functionalization protocols in sensor development as a means to minimize the steric obstructions and undesirable interactions of an aptamer with a surface onto which it is tethered. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Tamás AU - Bakos, István AU - Csupor, Barbara AU - Jeerapan, Itthipon AU - Pekker, Péter AU - Mihály, Judith AU - Németh, Krisztina AU - Wang, Joseph AU - Keresztes, Zsófia TI - Dual-Role Peptide with Capping and Cleavage Site Motifs in Nanoparticle-Based One-Pot Colorimetric and Electrochemical Protease Assay JF - ACS OMEGA J2 - ACS OMEGA VL - 8 PY - 2023 SP - 22556 EP - 22566 PG - 11 SN - 2470-1343 DO - 10.1021/acsomega.3c00771 UR - https://m2.mtmt.hu/api/publication/34008641 ID - 34008641 N1 - Research Centre for Natural Sciences, Magyar tudósok körútja 2., Budapest, 1117, Hungary Laboratory of Nano-Bioelectronics, Department of Nanoengineering, Jacobs School of Engineering, University of California, La Jolla, San Diego, CA 92093, United States Division of Physical Science and Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, 90110, Thailand Nanolab, Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Egyetem u. 10., Veszprém, 8200, Hungary Export Date: 30 January 2024 Correspondence Address: Szabó, T.; Research Centre for Natural Sciences, Magyar tudósok körútja 2., Hungary; email: szabo.84.tamas@ttk.hu Funding details: GINOP-2.3.3-15-2016-0009 Funding details: Jacobs School of Engineering, University of California, San Diego, JSOE, 92093 Funding details: European Commission, EC Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH, K131594 Funding details: Magyarország Kormánya Funding text 1: This work was supported by the European Commission under FORMILK 690898/H2020-MSCA-RISE-2015 project, and T.S. is grateful for the secondment period in the Laboratory of Nano-Bioelectronics, Department of Nanoengineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, 92093, USA. The BIONANO GINOP-2.3.2-15-2016-00017 project and the Nanolab of University of Pannonia, Hungary, established under GINOP-2.3.3-15-2016-0009 project were co-financed by European Structural and Investments Funds and the Hungarian Government. The FT-IR spectroscopy part was funded by National Research Development and Innovation Office, under grant number K131594. The authors gratefully acknowledge the essential help of Mihály Pósfai, head of Nanolab of University of Pannonia, Hungary, for providing access and expertise on TEM-related work. and Table of Contents were created with BioRender.com. Funding text 2: This work was supported by the European Commission under FORMILK 690898/H2020-MSCA-RISE-2015 project, and T.S. is grateful for the secondment period in the Laboratory of Nano-Bioelectronics, Department of Nanoengineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, 92093, USA. The BIONANO GINOP-2.3.2-15-2016-00017 project and the Nanolab of University of Pannonia, Hungary, established under GINOP-2.3.3-15-2016-0009 project were co-financed by European Structural and Investments Funds and the Hungarian Government. The FT-IR spectroscopy part was funded by National Research Development and Innovation Office, under grant number K131594. The authors gratefully acknowledge the essential help of Mihály Pósfai, head of Nanolab of University of Pannonia, Hungary, for providing access and expertise on TEM-related work. Scheme 1 and Table of Contents were created with BioRender.com. LA - English DB - MTMT ER - TY - JOUR AU - Felhősi, Ilona AU - Molnárné Nagy, Lívia AU - Horváth, Szilvia AU - Pozman, Tamás AU - Bognár, János AU - Szabó, Tamás AU - Keresztes, Zsófia TI - Corrosion Protection and Heat Resistance of Paints for Outdoor Use JF - MATERIALS J2 - MATERIALS VL - 16 PY - 2023 IS - 7 PG - 16 SN - 1996-1944 DO - 10.3390/ma16072753 UR - https://m2.mtmt.hu/api/publication/33724042 ID - 33724042 AB - Innovative heat- and corrosion-resistant coating approaches, applicable in indirect-food-contact outdoor environments, have been developed. Two systems, a direct-to-metal single-layer, polysiloxane-based, oven-dried system and a bilayer, zinc phosphate active pigment-containing, ambient-cured system were developed to overcome the shortcomings of the traditional bilayer, zinc-rich primer-based heat-resistant surface-protective solutions for outdoor cooking equipment, such as barbecue grills. This case study aims to optimize the application conditions, measure and evaluate the impact of surface preparation and compare thermo-resistant and anticorrosive properties of different coating systems focusing on eco-efficiency. The anticorrosion efficiency of the coatings was characterized using salt-spray chamber corrosion tests and electrochemical impedance spectroscopy. The thermo-resistant character of the coatings was tested by cyclic and constant heat treatment, after which the physical integrity of the coatings was evaluated by optical microscopy. In the overall performance of the coatings, the roughening of the steel substrate surface and the thickness of the coatings were also considered as influential parameters. The study revealed that the newly developed coatings have superior anticorrosion performance to the usually applied Zn-rich coating. The Single-layered Coating has excellent corrosion resistance under certain conditions and has the advantage of fast layer application. The Bilayered Coating showed excellent heat- and corrosion-resistance properties even on a surface without sand-blasting. LA - English DB - MTMT ER - TY - JOUR AU - Jakab, Kristóf AU - Csipor, J. AU - Ulbert, István AU - Keresztes, Zsófia AU - Mészáros, Gábor AU - Márton, Gergely TI - EEG sensor system development consisting of solid polyvinyl alcohol–glycerol–NaCl contact gel and 3D-printed, silver-coated polylactic acid electrode for potential brain–computer interface use JF - MATERIALS TODAY CHEMISTRY J2 - MATER TODAY CHEM VL - 26 PY - 2022 PG - 13 SN - 2468-5194 DO - 10.1016/j.mtchem.2022.101085 UR - https://m2.mtmt.hu/api/publication/33062187 ID - 33062187 LA - English DB - MTMT ER - TY - JOUR AU - Mészáros, Gábor AU - Akbarzadeh, Sanaz AU - De La Franier, Brian AU - Keresztes, Zsófia AU - Thompson, Michael TI - Advances in Electromagnetic Piezoelectric Acoustic Sensor Technology for Biosensor-Based Detection JF - CHEMOSENSORS J2 - CHEMOSENSORS VL - 9 PY - 2021 IS - 3 PG - 10 SN - 2227-9040 DO - 10.3390/chemosensors9030058 UR - https://m2.mtmt.hu/api/publication/31930849 ID - 31930849 N1 - Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, H-1117, Hungary Department of Chemistry, Yasouj University, Yasouj, 75918-74831, Iran Lash Miller Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada Export Date: 19 February 2022 Correspondence Address: Thompson, M.; Lash Miller Laboratories, 80 St. George Street, Canada; email: m.thompson@utoronto.ca Funding details: H2020 Marie Skłodowska-Curie Actions, MSCA, 690898 Funding details: Natural Sciences and Engineering Research Council of Canada, NSERC Funding details: Horizon 2020 Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH, BIONANO-GINOP 2.3.2-15-2016-00017 Funding text 1: Funding: This work was funded by the European Union Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant agreement No 690898, the Development and Innovation Office of Hungary (NKFIH) BIONANO-GINOP 2.3.2-15-2016-00017, and by the Natural Sciences and Engineering Research Council of Canada (grant to M.T.). LA - English DB - MTMT ER - TY - JOUR AU - Bakos, István AU - Vass, Ádám AU - Muckley, Eric S. AU - Ivanov, Ilia N. AU - Keresztes, Zsófia TI - Indirect electrochemical method for high accuracy quantification of protein adsorption on gold surfaces JF - ELECTROCHEMISTRY COMMUNICATIONS J2 - ELECTROCHEM COMMUN VL - 124 PY - 2021 PG - 5 SN - 1388-2481 DO - 10.1016/j.elecom.2021.106961 UR - https://m2.mtmt.hu/api/publication/31873518 ID - 31873518 LA - English DB - MTMT ER - TY - JOUR AU - Marek, Tamás AU - Orbán, Gábor AU - Meszéna, Domokos AU - Márton, Gergely AU - Ulbert, István AU - Mészáros, Gábor AU - Keresztes, Zsófia TI - Optimization Aspects of Electrodeposition of Photoluminescent Conductive Polymer Layer onto Neural Microelectrode Arrays JF - MATERIALS CHEMISTRY AND PHYSICS J2 - MATER CHEM PHYS VL - 260 PY - 2021 PG - 8 SN - 0254-0584 DO - 10.1016/j.matchemphys.2020.124163 UR - https://m2.mtmt.hu/api/publication/31782661 ID - 31782661 LA - English DB - MTMT ER - TY - JOUR AU - Románszki, Loránd AU - Hianik, Tibor AU - Keresztes, Zsófia TI - Plasmin determination based on enzymatic digestion of a β-casein layer at the air/water interface JF - COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS J2 - COLLOID SURFACE A VL - 609 PY - 2021 PG - 6 SN - 0927-7757 DO - 10.1016/j.colsurfa.2020.125786 UR - https://m2.mtmt.hu/api/publication/31683012 ID - 31683012 N1 - Functional Interfaces Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences address: Magyar tudósok körútja 2., Budapest, 1117, Hungary Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava address: Mlynská dolina F1, Bratislava, 84248, Slovakia Export Date: 19 February 2022 CODEN: CPEAE Correspondence Address: Románszki, L.; Functional Interfaces Research Group, Research Centre for Natural Sciences address: Magyar tudósok körútja 2., Hungary; email: romanszki.lorand@ttk.hu Chemicals/CAS: plasmin, 9001-90-5, 9004-09-5; water, 7732-18-5 Funding details: 1/0419/20 Funding details: Horizon 2020 Framework Programme, H2020, 690898 Funding details: European Commission, EC Funding text 1: The research leading to these results has received funding from the European Commission within the project Innovative technology for the detection of enzyme activity in milk ( formilk ) under grant agreement number 690898/H2020-MSCA-RISE-2015, and the BIONANO_GINOP-2.3.2-15-2016-00017 project. T.H. acknowledges funding from the Science Grant Agency VEGA , project No.: 1/0419/20. LA - English DB - MTMT ER -