@article{MTMT:34713084, title = {Synthesis of 3,4-disubstituted pyrroline nitroxides containing diphenylphosphane or diphenylphosphane oxide substituents}, url = {https://m2.mtmt.hu/api/publication/34713084}, author = {Balázsi, Áron and Bognár, Balázs and Jekő, József and Kálai, Tamás}, doi = {10.1055/a-2264-8302}, journal-iso = {SYNOPEN}, journal = {SYNOPEN}, volume = {8}, unique-id = {34713084}, issn = {2509-9396}, year = {2024}, pages = {68-75} } @article{MTMT:34657127, title = {Orientational Ordering of Graphene Oxide Membranes by a Spin Probe Technique and SEM Image Analysis}, url = {https://m2.mtmt.hu/api/publication/34657127}, author = {Marnautov, N.A. and Matveev, M.V. and Gulin, A.A. and Kálai, Tamás and Bognár, Balázs and Rebrikova, A.T. and Chumakova, N.A.}, doi = {10.1021/acs.jpcc.3c07127}, journal-iso = {J PHYS CHEM C}, journal = {JOURNAL OF PHYSICAL CHEMISTRY C}, volume = {128}, unique-id = {34657127}, issn = {1932-7447}, year = {2024}, eissn = {1932-7455}, pages = {2543-2550} } @{MTMT:34131883, title = {Kettős (Spin és Fluoreszcens) Szenzor Molekulák Új Alkalmazása}, url = {https://m2.mtmt.hu/api/publication/34131883}, author = {Bencze, Flórián and Bognár, Balázs and Kálai, Tamás and Kollár, László and Nagymihaly, Zoltan and Kunsági-Máté, Sándor}, booktitle = {A Magyar Szabadgyökkutató Társaság XII. Kongresszusa}, unique-id = {34131883}, year = {2023}, pages = {13-13} } @article{MTMT:33722185, title = {A New Application of Spin and Fluorescence Double-Sensor Molecules}, url = {https://m2.mtmt.hu/api/publication/33722185}, author = {Bencze, Flórián and Bognár, Balázs and Kálai, Tamás and Kollár, László and Nagymihaly, Zoltan and Kunsági-Máté, Sándor}, doi = {10.3390/molecules28072978}, journal-iso = {MOLECULES}, journal = {MOLECULES}, volume = {28}, unique-id = {33722185}, issn = {1420-3049}, abstract = {EPR imaging techniques are known to be successful tools for mapping living bodies, especially because of the high transparency of tissues in the microwave range. This technique assumes the presence of radicals whose in vivo transport is also controlled by serum albumins. Accordingly, in this study, the interactions between 3-hydroxymethyl-1-oxyl-4-(pyren-1-yl)-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrole radical and the human serum albumin molecules were investigated. To clarify the adsorption processes of this radical onto the surface of human serum albumin (HSA), the interaction of the OMe derivative of the radical was also examined parallel with the studies on the radical—HSA interactions. Considering the solubility issues and also to modulate the transport, inclusion complexes of the radical with a cavitand derivative were also studied. The latter interactions were observed through fluorescence spectroscopy, fluorescence polarization, and by EPR spectroscopy. As a double-sensor molecule, we found that the fluorophore nitroxide is a good candidate as it gave further information about host-guest interactions (fluorescence, fluorescence polarization, and EPR). We also found that in the presence of a cavitand, a complex with greater stability was formed between the sensor molecule and the human serum albumin. Based on these observations, we can conclude that applying this double-sensor (spin, fluorescent) molecule is useful in cases when different interactions can affect the EPR measurements.}, year = {2023}, eissn = {1420-3049} } @article{MTMT:33127965, title = {Kabachnik-Fields reactions with stable nitroxide free radicals}, url = {https://m2.mtmt.hu/api/publication/33127965}, author = {Isbera, Mostafa and Bognár, Balázs and Pápayné Sár, Cecília and Jekő, József and Kálai, Tamás}, doi = {10.24820/ark.5550190.p011.849}, journal-iso = {ARKIVOC}, journal = {ARKIVOC}, volume = {3}, unique-id = {33127965}, issn = {1551-7012}, abstract = {The Kabachnik-Fields reaction is a multicomponent reaction that provides alpha-aminophosphonates and phosphorus analogs of alpha-amino acids. While paramagnetic alpha- amino acids are well known, to the best of our knowledge, this is the first report on paramagnetic.-aminophosphonate syntheses. We present examples of nitroxide-containing.-aminophosphonates starting from five- and six-membered paramagnetic aldehydes, a paramagnetic ketone, and five- and six-membered paramagnetic amines. Starting from a beta-bromo-alpha,beta unsaturated aldehyde, we constructed a pyrroline-nitroxide-condensed heterocycle with a phosphonate ester substituent. [GRAPHICS]}, keywords = {HETEROCYCLES; NITROXIDES; Kabachnik-Fields reaction; T3P (R)}, year = {2022}, eissn = {1551-7004}, pages = {186-196} } @article{MTMT:33090440, title = {Szemelvények a PTE GyTK Szerves és Gyógyszerkémiai Intézetének újabb (2013-2021) kutatási eredményeiből}, url = {https://m2.mtmt.hu/api/publication/33090440}, author = {Bognár, Balázs and Lemli, Beáta and Kőrösi, László Tamás and Mohamed Ameen, Hiba Farooq and Derdák, Diána and Isbera, Mostafa and Preisz, Zsolt and Úr, Györgyi and Pápayné Sár, Cecília and Kunsági-Máté, Sándor and Kálai, Tamás}, doi = {10.24100/MKF.2022.02.68}, journal-iso = {MAGY KÉM FOLY KÉM KÖZL}, journal = {MAGYAR KÉMIAI FOLYÓIRAT - KÉMIAI KÖZLEMÉNYEK (1997-)}, volume = {128}, unique-id = {33090440}, issn = {1418-9933}, year = {2022}, eissn = {1418-8600}, pages = {68-78}, orcid-numbers = {Lemli, Beáta/0000-0001-8903-1337} } @article{MTMT:32641372, title = {Phase-Selective Synthesis of Anatase and Rutile TiO2 Nanocrystals and Their Impacts on Grapevine Leaves: Accumulation of Mineral Nutrients and Triggering the Plant Defense}, url = {https://m2.mtmt.hu/api/publication/32641372}, author = {Kőrösi, László Tamás and Bognár, Balázs and Czégény, Gyula and Lauciello, Simone}, doi = {10.3390/nano12030483}, journal-iso = {NANOMATERIALS-BASEL}, journal = {NANOMATERIALS}, volume = {12}, unique-id = {32641372}, year = {2022}, eissn = {2079-4991}, orcid-numbers = {Bognár, Balázs/0000-0001-6695-6839} } @article{MTMT:32467989, title = {Syntheses and utilizations of pyrroline and tetrahydropyridine nitroxide-based phosphonate esters, a phosphate ester and a bisphosphonate}, url = {https://m2.mtmt.hu/api/publication/32467989}, author = {Kálai, Tamás and Isbera, Mostafa and Bognár, Balázs and Pápayné Sár, Cecília and Jekő, József and Hideg, Kálmán}, doi = {10.1080/10426507.2021.1989685}, journal-iso = {PHOSPHOR SULFUR SIL REL ELEM}, journal = {PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS}, volume = {197}, unique-id = {32467989}, issn = {1042-6507}, abstract = {Five- and six-membered cyclic nitroxide-based allylic phosphonate esters, alpha-ketophosphonate esters were obtained from the corresponding paramagnetic allyl bromides and acyl chlorides respectively via the Arbuzov reactions. The alpha-hydroxyphosphonate esters were accessed by Pudovik reactions from the corresponding paramagnetic ketones and aldehydes. The beta-ketophosphonate esters were obtained from the appropriate 1-alkynylphosphonate esters via PdCl2-catalyzed hydration. The synthesis of an allylic phosphate ester and a paramagnetic geminal bisphosphonate was also reported.}, year = {2022}, eissn = {1563-5325}, pages = {498-501} } @article{MTMT:32466727, title = {Syntheses and study of a pyrroline nitroxide condensed phospholene oxide and a pyrroline nitroxide with diphenylphosphino moiety}, url = {https://m2.mtmt.hu/api/publication/32466727}, author = {Isbera, Mostafa and Bognár, Balázs and Gallyas, Ferenc and Bényei, Attila Csaba and Jekő, József and Kálai, Tamás}, doi = {10.1080/10426507.2021.1989690}, journal-iso = {PHOSPHOR SULFUR SIL REL ELEM}, journal = {PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS}, volume = {197}, unique-id = {32466727}, issn = {1042-6507}, abstract = {The reaction of a diene nitroxide precursor with dichlorophenylphosphine in a McCormac procedure afforded pyrroline nitroxide condensed phospholen oxide. Lithiation of the protected 3-bromo-pyrroline nitroxide followed by treatment with chlorodiphenylphosphine after deprotection afforded (1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)diphenylphosphine oxide, and after reduction, (1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)diphenylphosphine was realized, which was also supported by X-ray single crystal diffraction measurements. This pyrroline diphenylphosphine derivative was converted to hexadecylphosphonium salt, which was more effective antineoplastic agent than its analogue MITO-CP.}, year = {2022}, eissn = {1563-5325}, pages = {515-517}, orcid-numbers = {Gallyas, Ferenc/0000-0002-1906-4333} } @article{MTMT:32766022, title = {Nitroxide with diphenylphosphino moiety: synthesis, supramolecular structure, biology and catalysis}, url = {https://m2.mtmt.hu/api/publication/32766022}, author = {Benyei, A. and Isbera, Mostafa and Bognár, Balázs and Gallyas, Ferenc and Jekő, József and Kalai, T.}, journal-iso = {ACTA CRYSTALLOGR A FOUND ADV}, journal = {ACTA CRYSTALLOGRAPHICA SECTION A: FOUNDATIONS AND ADVANCES}, volume = {77}, unique-id = {32766022}, issn = {2053-2733}, keywords = {Chemistry, Multidisciplinary; Nitroxide; Supramolecular structure; tertiary phosphane}, year = {2021}, eissn = {2053-2733}, pages = {C886-C886}, orcid-numbers = {Gallyas, Ferenc/0000-0002-1906-4333} }