J
Judite Costa
Researcher at University of Lisbon
Publications - 43
Citations - 951
Judite Costa is an academic researcher from University of Lisbon. The author has contributed to research in topics: Protonation & Metal ions in aqueous solution. The author has an hindex of 19, co-authored 43 publications receiving 861 citations. Previous affiliations of Judite Costa include University of Nebraska–Lincoln & Instituto Superior Técnico.
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A new redox-responsive 14-membered tetraazamacrocycle with ferrocenylmethyl arms as receptor for sensing transition-metal ions
TL;DR: In this paper, a new redox-responsive receptor, 3,11-bis(ferrocenylmethyl)-7-methyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene, L1, has been synthesized at 25.0°C, in methanol-water (1∶1, v/v), and at ionic strength 0.10 mol dm−3 in KNO3.
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Tetraaza macrocycles containing pyridine and their copper(II) and nickel(II) complexes: X-ray, spectroscopic, molecular mechanics and molecular orbital studies
Vítor Félix,Maria José Calhorda,Judite Costa,Rita Delgado,Cláudia Brito,Maria Teresa Duarte,Teresa Arcos,Michael G. B. Drew +7 more
TL;DR: In this article, the behavior in solution of nickel(II) complexes of the macrocycles L1{3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene} and L2(7-methyl-3, 7, 11,17tetRAazabicycleclo] containing pyridine rings was investigated spectroscopically (UV/VIS/near IR and 1H NMR).
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Structural characterization of cobalt(III), nickel(II), copper(II) and iron(III) complexes of tetraazamacrocycles with N-carboxymethyl arms
TL;DR: The single crystal structures of complexes [CoL1]Br 0.5·[NO3]0.5 ·[CoL3]·2H2O 4 were determined, where H2L1 is 3,11-bis(carboxymethyl)-7-methyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene and H3L3 was determined by as discussed by the authors.
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Development of pyridine-containing macrocyclic copper(II) complexes: potential role in the redox modulation of oxaliplatin toxicity in human breast cells
Ana Sofia Fernandes,Judite Costa,Jorge Gaspar,José Rueff,MF Cabral,Madalena Cipriano,Matilde Castro,Nuno G. Oliveira +7 more
TL;DR: Results show that CuL3 enhances the therapeutic window of oxaliplatin, by both protecting non-tumour cells and increasing its cytotoxic effect in breast carcinoma cells, and is thus a promising complex to be further studied and to be used as a lead compound for the optimization of novel chemotherapy sensitizers.
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Ditopic hexaazamacrocycles containing pyridine: synthesis, protonation and complexation studies
TL;DR: Mononuclear and dinuclear complexes of the divalent metal ions studied with [22]- to [26]-py2N4 were found in solution and EPR spectroscopy of the copper complexes indicated the presence of mono- and din nuclear species.