Browsing by Author "Natali, Mirco"

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    Air- and Water-Stable Heteroleptic Copper (I) Complexes Bearing Bis(indazol-1-yl)methane Ligands: Synthesis, Characterisation, and Computational Studies
    (2023) Moreno Da Costa, David Ricardo Rafael; Zúñiga-Loyola, César; Droghetti, Federico; Robles, Stephania; Alondra Villegas-Menares; Villegas, Nery Andres; Gonzalez-Pavez, Iván; Molins, Elies; Natali, Mirco; Cabrera, Alan R.; Boucekkine, Abdou
    A series of four novel heteroleptic Cu(I) complexes, bearing bis(1H-indazol-1-yl)methaneanalogues as N,N ligands and DPEPhos as the P,P ligand, were synthesised in high yields undermild conditions and characterised by spectroscopic and spectrometric techniques. In addition, theposition of the carboxymethyl substituent in the complexes and its effect on the electrochemical andphotophysical behaviour was evaluated. As expected, the homoleptic copper (I) complexes with theN,N ligands showed air instability. In contrast, the obtained heteroleptic complexes were air- andwater-stable in solid and solution. All complexes displayed green-yellow luminescence in CH2Cl2at room temperature due to ligand-centred (LC) phosphorescence in the case of the Cu(I) complexwith an unsubstituted N,N ligand and metal-to-ligand charge transfer (MLCT) phosphorescence forthe carboxymethyl-substituted complexes. Interestingly, proper substitution of the bis(1H-indazol1-yl)methane ligand enabled the achievement of a remarkable luminescent yield (2.5%) in solution,showcasing the great potential of this novel class of copper(I) complexes for potential applications inluminescent devices and/or photocatalysis.
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    Exploring catalytic activity modulations: photoredox catalysis with substituted copper(i)-dipyridylamine derivatives
    (Royal Society of Chemistry, 2025) Villegas Menares, Alondra Elena; Hansmann, Yannik Sebastian; Bayas Álvarez, Max Ignacio; Verdugo Leiva, Camilo Andrés; Erazo Valdés, Ignacio Adolfo; Zúñiga Loyola, César Antonio; González, Iván; Galdámez, Antonio; Villa, Lucrezia; Natali, Mirco; Cabrera Caballero, Alan Raúl
    In this work, we have successfully synthesized five new heteroleptic copper(i) complexes (C1-5), bearing N,N ligands derived from dipyridylamine and S-BINAP as the P,P auxiliary ligand. All complexes were structurally characterized using NMR, FT-IR, and elemental analysis. Furthermore, the molecular structures of C1, C4, and C5 were determined via X-ray diffraction analysis. The photophysical properties of all complexes were assessed using UV-Vis spectroscopy and spectrofluorometric measurements in dichloromethane solution and the solid state. All complexes displayed absorption bands at lower energies, attributed to spin-allowed MLCT transitions. In degassed dichloromethane solution at room temperature, all complexes exhibited broad luminescence in the visible spectrum, mainly assigned to MLCT/LLCT phosphorescence, with excited state lifetimes in the μs time regime. Besides, all complexes were assessed as photoredox catalysts in chlorosulfonylation and bromonitromethylation reactions of styrene, showing remarkable performances, thus highlighting the privileged role of the dpa ligand for the design of Earth-abundant metal photocatalysts.
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    Heteroleptic Cu(i) complexes bearing methoxycarbonyl-imidoylindazole and POP ligands-an experimental and theoretical study of their photophysical properties
    (2018) González Pavez, Iván Alonso; Henríquez Toro, Marco Antonio; Cortés Arriagada, Diego; Natali, Mirco; Daniliuc, Constantin G.; Dreyse, Paulina A.; Maze Ríos, Jerónimo; Rojas Guerrero, René; Salas Sánchez, Cristián Osvaldo; Cabrera Caballero, Alan Raúl
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    Synthesis of new phosphorescent imidoyl-indazol and phosphine mixed ligand Cu(i) complexes-structural characterization and photophysical properties
    (2016) Cabrera Caballero, Alan Raúl; González Pavez, Iván Alonso; Cortés Arriagada, Diego; Natali, Mirco; Berke, Heinz; Daniliuc, Constatin G.; Camarada Uribe, María Belén Monserrat; Toro Labbé, Alejandro; Rojas Guerrero, René; Salas Sánchez, Cristián Osvaldo