Mauricio Isaacs C.
(56-2) 2354 4393
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Profesor Titular
Doctor en Química.
Universidad de Santiago de Chile, 2002
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Areas o líneas de investigación:
Las líneas de investigación abordan distintas estrategias de reconversión de dióxido de carbono ya sea en combustibles líquidos o productos con valor agregado. Para lograr este objetivo se utilizan técnicas fotoquímicas, electroquímicas y foto-electroquímicas utilizando catalizadores y electrocatalizadores tales como, porfirinas multimetálicas, electrocatalizadores híbridos semiconductor-compuesto de coordinación y semiconductores nanocristalinos
Los compuestos de coordinación presentan una rica química redox así como también procesos intramoleculares de transferencia de carga y/o energía convirtiéndose en excelentes candidatos para el estudio de las reacciones de reconversión ambiental. Los macrociclos se utilizan para modificar diversas superficies electródicas para optimizar el proceso de reducción de CO2.
Con la irrupción de los líquidos iónicos como medio de reacción verde, hemos ampliado el horizonte de nuestra línea de investigación usando estos nuevos solventes para la reconversión de dióxido de carbono en presencia de otros sustratos como aminas o epóxidos, con el objeto de obtener, en condiciones suaves, productos de mayor valor agregado tales como uretanos o carbonatos cíclicos respectivamente.
La caracterización de las superficies se logra a través de técnicas espectroscópicas como UV-Visible, FT-IR-ATR Raman, mediante técnicas electroquímicas, espectro-electroquímica y microscopía de barrido electroquímico. La morfología se estudia por SEM-EDX y AFM. Las propiedades electrocatalíticas se estudian por voltametría cíclica, electrodo de disco rotatorio, electrólisis a potencial controlado y espectroscopía de impedancia electroquímica.
Proyectos
2014-2017
Structural and microenvironmental effects in the electro and photoelectrochemical reduction of carbon dioxide on multimetallic porphyrins modified electrodes by “layer-by-layer”methodology.
Proyecto FONDECYT regular 1141199.
Investigador Responsable.
2014-2016
Centro interdisciplinario de Liquidos Ionicos.
Director Suplente Nucleo Milenio.
2014-2012
Centro interdisciplinario de Liquidos Ionicos.
Investigador Asociado ICM – P10-003-F. Nucleo milenio.
2013-2010
Electro and Photoelectro-Catalytic Synthesis of Urea and Urethanes From Carbon Dioxide and Nitrite or Amines, on Tetraruthenated Pophyrins-Modified Electrodes in Water and Ionic Liquids: An Approach to the Green Electrochemistry Concept.
Proyecto Fondecyt Regular 1100203.
Investigador Responsable.
2012-2010
Supercritical Fluid Extraction of Organic Compounds From Aqueous Solutions Using Gelled Ionic Liquid Membranes.
Proyecto Fondecyt Regular 1100305.
Co-investigador.
2008-2005
Diseño de un Sensor Electroquímico Para sulfito y Determinación Electroquímica de la Capacidad Antioxidante de Fenoles en Vinos.
Proyecto Bicentenario Anillos de Investigación en Ciencias y Tecnología, 2004. Universidad de Santiago-Universidad de Chile.
Investigador Titular.
2007-2005
Conversión Foto-electroquímica Simultánea de ión Nitrito y Dióxido de Carbono Mediada por Polímeros Conductores Polinucleares: Una Aproximación a la Fotosíntesis Artificial.
Fundación Andes. Programa de inicio de Carrera Para Jóvenes Investigadores 2005. Universidad de Chile.
Investigador Responsable.
Publicaciones
Varas-Concha, F., Guzmán, D., Isaacs, M., Sáez-Navarrete, C. Operational Conditions Affecting Hydrogen Production by the Photoreforming of Organic Compounds using Titania Nanoparticles with Gold.Energy Technology. 2018; 6 (2): 416-431. DOI: 10.1002/ente.201700546
Pavez, P., Honores, J., Millán, D., Isaacs, M. UN sustainable development goals: How can sustainable/green chemistry contribute? Current Opinion in Green and Sustainable Chemistry. Article in Press. 2018;
DOI: 10.1016/j.cogsc.2018.06.013
Landaeta, E., Schultz, Z.D., Burgos, A., Schrebler, R., Isaacs, M. Enhanced photostability of cuprous oxide by lignin films on glassy carbon electrodes in the transformation of carbon dioxide. Green Chemistry. 2018; 20 (10): 2356-2364. DOI: 10.1039/c8gc00365c
Fuenzalida, F., Aravena, D., García, C., García, M., Arce, R., Ramírez, G., Díaz, C., Isaacs, M., Arévalo, M.D.C., Aguirre, M.J. Effect of the substituent of the cation of N-octylpyridinium hexafluorophosphate in the electrical and electrochemical response of carbon paste electrodes modified with these ionic liquids. Electrochimica Acta. 2017; 258: 959-969. DOI: 10.1016/j.electacta.2017.11.147
Martínez-Rojas, F., Del Valle, M.A., Isaacs, M., Ramírez, G., Armijo, F. Electrochemical Behaviour Study and Determination of Guanine, 6-Thioguanine, Acyclovir and Gancyclovir on Fluorine-doped SnO2 Electrode. Application in Pharmaceutical Preparations. Electroanalysis. 2017; 29 (12): 2888-2895. DOI: 10.1002/elan.201700516
Abarzúa-Illanes, P.N., Padilla, C., Ramos, A., Isaacs, M., Ramos-Grez, J., Olguín, H.C., Valenzuela, L.M. Improving myoblast differentiation on electrospun poly(ε-caprolactone) scaffolds. Journal of Biomedical Materials Research - Part A. 2017; 105 (8): 2241-2251. DOI: 10.1002/jbm.a.36091
Honores, J., Quezada, D., García, M., Calfumán, K., Muena, J.P., Aguirre, M.J., Arévalo, M.C., Isaacs, M.Carbon neutral electrochemical conversion of carbon dioxide mediated by [M: N +(cyclam)Cln] (M = Ni2+ and Co3+) on mercury free electrodes and ionic liquids as reaction media. Green Chemistry. 2017; 19 (4): 1155-1162. DOI: 10.1039/c6gc02599d
Fuenzalida, F., García, C., García, M., Arce, R., Báez, C., Aguirre, M.J., Isaacs, M., Del Carmen Arévalo, M. Electrooxidation of sulfite at carbon paste electrode modified with ionic liquids derivated of N-octyl-pyridinium hexafluorophosphate with different substituents in the cation. Journal of the Chilean Chemical Society. 2017; 62 (4): 3721-3725.
Calfumán, K., Honores, J., Guzmán, D., Ohlbaum, M., Armijo, F., Del Río, R., Isaacs, M.Electrochemical Conversion of Carbon Dioxide into CHO-Containing Compounds on Multimetallic Porphyrins. ChemElectroChem. 2017; 4 (12): 3314-3321. DOI: 10.1002/celc.201700653
Padilla, C., Ramos, A., González, N., Isaacs, M., Zacconi, F., Olguín, H.C., Valenzuela, L.M. Chitosan/poly-octanoic acid 2-thiophen-3-yl-ethyl ester blends as a scaffold to maintain myoblasts regeneration potential in vitro. Journal of Biomedical Materials Research - Part A. 2017; 105 (1): 118-130. DOI: 10.1002/jbm.a.35889
Gallardo-Fuentes, S., Contreras, R., Isaacs, M., Honores, J., Quezada, D., Landaeta, E., Ormazábal-Toledo, R. On the mechanism of CO2 electro-cycloaddition to propylene oxides. Journal of CO2 Utilization. 2016; 16: 114-120. DOI: 10.1016/j.jcou.2016.06.007
Ramírez, C., Del Valle, M.A., Isaacs, M., Armijo, F. Electrochemical oxidation of catecholamines on fluorine-doped SnO2 substrates. Square-wave voltammetric method for methyldopa determination in pharmaceutical dosage forms. Electrochimica Acta. 2016; 199: 227-233. DOI: 10.1016/j.electacta.2016.03.093
García, M., Honores, J., Quezada, D., Díaz, C., Dreyse, P., Celis, F., Kubiak, C.P., Canzi, G., Guzmán, F., Aguirre, M.J., Isaacs, M. Nitrite reduction on a multimetallic porphyrin/polyoxotungstate layer-by-layer modified electrodes. Electrochimica Acta. 2016; 192: 61-71. DOI: 10.1016/j.electacta.2016.01.132
Calfumán, K., Quezada, D., Isaacs, M., Bollo, S. Enhanced Hydrogen Peroxide Sensing Based on Tetraruthenated Porphyrins/Nafion/Glassy Carbon-modified Electrodes via Incorporating of Carbon Nanotubes. Electroanalysis. 2015; 27 (12): 2778-2784. DOI: 10.1002/elan.201500375
Dreyse, P., Honores, J., Quezada, D., Isaacs, M. Electrocatalytic Transformation of Carbon Dioxide into Low Carbon Compounds on Conducting Polymers Derived from Multimetallic Porphyrins.
ChemSusChem. 2015; 8 (22): 3897-3904. DOI: 10.1002/cssc.201500816
Guzmán, D., Isaacs, M., Osorio-Román, I., García, M., Astudillo, J., Ohlbaum, M. Photoelectrochemical reduction of carbon dioxide on quantum-dot-modified electrodes by electric field directed layer-by-layer assembly methodology. ACS Applied Materials and Interfaces. 2015; 7 (36): 19865-19869. DOI: 10.1021/acsami.5b05722
García, C., Díaz, C., Araya, P., Isaacs, F., Ferraudi, G., Lappin, A.G., Aguirre, M.J., Isaacs, M. Electrostatic self-assembled multilayers of tetrachromatedmetalloporphyrins/polyoxometalateand its electrocatalytic properties in oxygen reduction. Electrochimica Acta. 2014; 146: 819-829. DOI: 10.1016/j.electacta.2014.08.117
Cáceres, C., Martínez, M., Rodríguez, C., Dreyse, P., Ortega, V., Isaacs, M. Electrochemical coating of [trans-L14CoIIICNFe II(CN)5]Na on ITO/Au electrode and its electrocatalytic properties towards nitrite reduction.
Journal of Electroanalytical Chemistry. 2014; 722-723: 1-6. DOI: 10.1016/j.jelechem.2014.03.004
Millán, D., Rojas, M., Santos, J.G., Morales, J., Isaacs, M., Diaz, C., Pavez, P. Toward a pKa scale of N-base amines in ionic liquids. Journal of Physical Chemistry B. 2014; 118 (16): 4412-4418.
DOI: 10.1021/jp501082t
Quezada, D., Honores, J., García, M., Armijo, F., Isaacs, M. Electrocatalytic reduction of carbon dioxide on a cobalt tetrakis(4-aminophenyl)porphyrin modified electrode in BMImBF4.
New Journal of Chemistry. 2014; 38 (8): 3606-3612. DOI: 10.1039/c4nj00519h
Quezada, D., Honores, J., Aguirre, M.J., Isaacs, M. Electrocatalytic reduction of carbon dioxide on conducting glass electrode modified with polymeric porphyrin films containing transition metals in ionic liquid medium.Journal of Coordination Chemistry. 2014; 67: 4090-4100. DOI: 10.1080/00958972.2014.974581
García, M., Aguirre, M.J., Canzi, G., Kubiak, C.P., Ohlbaum, M., Isaacs, M. Electro and photoelectrochemical reduction of carbon dioxide on multimetallic porphyrins/polyoxotungstate modified electrodes.
Electrochimica Acta. 2014; 115: 146-154. DOI: 10.1016/j.electacta.2013.10.142
Plaza, A., Merlet, G., Hasanoglu, A., Isaacs, M., Sanchez, J., Romero, J. Separation of butanol from ABE mixtures by sweep gas pervaporation using a supported gelled ionic liquid membrane: Analysis of transport phenomena and selectivity. Journal of Membrane Science. 2013; 444: 201-212. DOI: 10.1016/j.memsci.2013.04.034
Millán, D., Rojas, M., Pavez, P., Isaacs, M., Diaz, C., Santos, J.G. Influence of the ionic liquid on the rate and the mechanism of reaction of p-nitrophenyl acetate with secondary alicyclic amines. New Journal of Chemistry. 2013; 37 (10): 3281-3288. DOI: 10.1039/c3nj00781b
Díaz, C., García, C., Iturriaga-Vásquez, P., Aguirre, M.J., Muena, J.P., Contreras, R., Ormazábal-Toledo, R., Isaacs, M. Experimental and theoretical study on the oxidation mechanism of dopamine in n-octyl pyridinium based ionic liquids-carbon paste modified electrodes. Electrochimica Acta. 2013; 111: 846-854. DOI: 10.1016/j.electacta.2013.08.103
R. Arce, R. del Río, D. Ruiz-León, J. Velez, M. Isaacs, M.A. del Valle, M.J. Aguirre. Evidence for the formation of a copolymer by simultaneous electropolymerization of p-tetraaminophenyl porphyrin cobalt (II)) and o-phenylenediamine on glassy carbon. International Journal of Electrochemical. Science. 2012; 7(11): 11596-11608.
M. García, K. Carfumán, C. Díaz, C. Garrido, I. Osorio-Román, M.J. Aguirre, M. Isaacs. Multimetallic porphyrins/polyoxotungstate modified electrodes by layer-by-layer method: Electrochemical, spectroscopic and morphological characterization. Electrochimica Acta. 2012; 80: 390-398.
P. Dreyse, D. Quezada, J. Honores, M.J. Aguirre, L. Mendoza, B. Matsuhiro, D. Villagra, M. Isaacs. Determination of S(IV) Oxoanions at Poly[Ru(5-NO2-Phen)2Cl] Tetrapyridylporphyrin Glassy Carbon Modified Electrode. Electroanalysis. 2012; 24(8): 1709-1718.
C. Montes, J.H. Vélez, G. Ramírez, M. Isaacs, R. Arce, M.J. Aguirre. Critical comparison between modified Monier-Williams and electrochemical methods to determine sulfite in aqueous solutions. The Scientific World Journal. 2012. Artículo No. 168148.
C. García, G. Ferraudi, A.G. Lappin, M. Isaacs. Synthesis, Spectral, Electrochemical and Flash Photolysis studies of Fe(II), Ni(II) tetrapyridilporphyrine bounded at the periphery with Chromium (III) phenanthroline complexes. Inorganica Chimica Acta. 2012; 386: 73-82.
M. Isaacs, K. Calfumán, M.J. Aguirre, P. Cañete-Rosales, S. Bollo, R. Llusar. Electrocatalytic reduction of nitrite on tetraruthenated metalloporphyrins/ nafion glassy carbon modified electrode. Electrochimica Acta. 2011; 56: 8484-8491.
M.J. Aguirre, M. Isaacs, B. Matsuhiro, L. Mendoza, L. Silva, S. Torres. Anthocyanin composition in aged Chilean Cabernet Sauvignon red wines. Food Chemistry. 2011; 129: 514-519.
P. Dreyse, M. Isaacs, K. Calfumán, C. Cáceres, A. Aliaga, M.J. Aguirre, D. Villagra. Electrochemical reduction of nitrite at poly-[ru(5-no2-phen)2Cl] tetrapyridylporphyrin glassy carbon modified electrode. Electrochimica Acta. 2011; 56: 5230-5237.
C. García, C. Domínguez, A. Aliaga, B. Matsuhiro, L. Mendoza, M.J. Aguirre, M. Isaacs. Electrochemical properties of a conducting film derived from iron(II) trisdiaminepolypyridyl complex in the S(IV) oxoanions reduction. Electroanalysis. 2011; 23(6): 1401-1409.
S. Torres, G. Ferraudi, M.J. Aguirre, M. Isaacs, B. Matsuhiro, N. Chandía, L. Mendoza. On the ligand to metal charge transfer photochemistry of the copper(II) complexes of quercetin and rutin. Helvetica Chimica Acta. 2011; 94: 293-300.
K. Calfumán, P. Dreyse, C. García, M.J. Aguirre, T. Beltrán, E. Guillamón, I. Sorribes, C. Vicent, M. Llusar, M. Isaacs. Characterization of PVC-Tetraruthenated metalloporphyrins modified electrodes: Application as electrocatalyst in the nitrite reduction. Macromolecular Symposia. 2011; 304: 93-100.
L. Mendoza, B. Matsuhiro, M.J. Aguirre, M. Isaacs, G. Sotés, M. Cotorás, R. Melo. Characterization of phenolic acids profile from Chilean red wines by high-performance liquid chromatography. Journal of the Chilean Chemical Society. 2011; 56(2): 688-691.
F. Caruso, L. Mendoza, P. Castro, M. Cotorás, M.J. Aguirre, B. Matsuhiro, M. Isaacs, M. Rossi, A. Viglianti, R. Antonioletti. Antifungal activity of resveratrol against Botrytis cinerea is improved using 2-furyl derivatives. PLoS ONE. 2011; 6(10): e25421-e25421.
P. Dreyse, M. Isaacs, P. Iturriaga, D. Villagra, M.J. Aguirre, C.P. Kubiak, S. Glover, J. Goeltz. Electrochemical preparation of conductive films of tetrapyridylporphyrins coordinated to four [Ru(5-NO2-phen)2Cl]+ groups. Journal of Electroanalytical Chemistry. 2010; 648: 98-104.
W. Cheuquepán, D. Villagra, M. Azócar, G. Ramírez, Y. Chen, B. Matsuhiro, L. Mendoza, M. Isaacs, M. Canales, M.J. Aguirre. Effect of the number of substituents on the behavior of modified electrodes with cobalt porphyrins substituted with a different numbers of bis(methoxyphenyl) groups toward the oxidation of sulfite. Journal of the Chilean Chemical Society. 2010; 55(2): 98-104.
W. Cheuquepán, D. Villagra, M.I. Azócar, G. Ramírez, Y. Chen, B. Matsuhiro, L. Mendoza, M. Isaacs, M.J. Aguirre. Effect of the number of substituents on the behavior of modified electrodes with cobalt porphyrins substituted with a different numbers of bis(methoxyphenyl) groups toward the oxidation of sulfite. Journal of the Chilean Chemical Society. 2010; 55(2): 253-256.
K. Calfumán, D. Villagra, M. Aguirre, Y. Yañez, C. Arévalo, B. Matsuhiro, L. Mendoza, M. Isaacs. Nafion/Tetraruthenated Porphyrins Glassy Carbon Modified Electrode: Characterization and Voltammetric Studies of Sulfite Oxidation in Water-Ethanol Solutions. Journal of Solid State Electrochemistry. 2010; 14(6): 1065-1072.
M.J. Aguirre, Y. Chen, M. Isaacs, B. Matsuhiro, L. Mendoza, S. Torres. Electrochemical behavior and antioxidant capacity of anthocyanins from chilean red wine, grape and raspberry. Food Chemistry. 2010; 121: 44-48.
K. Calfumán, M. García, M.J. Aguirre, B. Matsuhiro, L. Mendoza, M. Isaacs. Electrochemical Reduction of S(IV) Compounds in Water-Ethanol Solutions at Nafion/ Tetraruthenated Porphyrins Glassy Carbon Modified Electrodes. Electroanalysis. 2010; 22(3): 338-344.
B. Matsuhiro, R. Torres, E. Zúñiga, M.J. Aguirre, L. Mendoza, M. Isaacs. Determination of Reducing Sugars and Sucrose in Cabernet Sauvignon Red Wines. Journal Chilean Chemical Society. 2009; 54(4): 405-407.
B. Matsuhiro, M.J. Aguirre, M. Isaacs, L. Mendoza, E. Zuñiga. Characterization of a neutral polysaccharide with antioxidant capacity from red wine. Carbohydrate Research. 2009: 344: 1095-1101.
G. Ramírez, M. Goya, L. Mendoza, B. Matsuhiro, M. Isaacs, Y. Chen, M.C. Arévalo, J. Henríquez, M.J. Aguirre. Fe(III)-tetrakis(p-tetraaminophenyl)porphyrin-modified electrodes: influence of the method of modification on the stability and electrocatalytic activity for the oxidation of sulfite or hydrogensulfite in ethanol-water solutions. Journal of Coordination Chemistry. 2009: 62(17): 2782-2791.
P. Bravo, I. Chen, G. Ramirez, M. Canales, B. Matsuhiro, L. Mendoza, M. Isaacs, M. García, M. Arevalo, M.J. Aguirre. Electro-Oxidation and Determination of Sulfite in Ethanol:Water Solutions Mediated by Poly-Cu(II)-X-Tetraaminophenylporphyrin/Glassy-Carbon Modified Electrodes (X=2, 3 or 4). Collection of Czechoslovak Chemical Communications. 2009: 4(74): 545-557.
C. García, D. Villagra, F. Caruso, M. Rossi, B. Matsuhiro, L. Mendoza, M.J. Aguirre, M. Isaacs. Synthesis, structure and electrochemical properties of the cationic complex tris-(imidazolidine-1,10-phenanthroline)iron(II). Inorganic Chemistry Communications. 2009; 12: 392-395.
F. Fuenzalida, P. Dreyse, D. Villagra, B. Matsuhiro, L. Mendoza, M.J. Aguirre, M. Isaacs. Electrochemical reduction of SO2 on poly-Co-3-tetraaminophenylporphyrin glassy carbon modified electrode. Journal Coordination Chemistry. 2009; 62(1): 130-140.
