Browsing by Author "Rojas Guerrero, Mabel Natalia"
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- ItemA comparative study on the cucurbit[7]uril-based indicator displacement assay for methyl Viologen. A theoretical and experimental perspectivePavez Guerrero, Paulina; Fierro Huerta, Angelica Maria; Rojas Guerrero, Mabel Natalia; Garcia-Rio, Luis; Dinamarca-Villarroel, Luis; Fuentealba Patino, Denis Alberto; Droguett Muñoz, Kevin Arturo; Santos Blanco, José Guillermo; Aliaga Miranda, Margarita EllyOne colorimetric and one fluorescent-indicator displacement assay (IDA) were studied to assess their interaction with methyl viologen (MV), an herbicide commercially known as paraquat. The host–guest complexes formed by cucurbit[7]uril (CB[7]) and the 4-nitroaniline (NA) or Berberine (Be) dyes function as colorimetric- and fluorescent-IDA for MV, respectively. The CB[7]@NA and CB[7]@Be complexes were characterized by UV–vis, fluorescence spectroscopy, and dynamic simulations. Isothermal titration calorimetry (ITC) experiments and dynamic simulations were employed to obtain thermodynamic data for the formation of the 1:1 inclusion complexes. Finally, NA is proposed as a reference colorimetric dye for determining CB[7]-binding affinities using competitive host–guest titrations, and the fluorescent-IDA as the best assay proposed, as it exhibits a high binding constant, a good detection limit of 2.7 × 10−6 mol L-1, good linearity in the range from 4 × 10−6 mol L-1 to 3.5 × 10−5 mol L-1, in aqueous solution.
- ItemConversion of succinic acid over Ni and Co catalysts(2021) Rojas Guerrero, Mabel Natalia; Zarate, X.; Canales Muñoz, Roberto; Dongil, A. B.; Pazo Carballo, César Alexander; Saavedra Torres, M.; Escalona, Néstor
- ItemDual function of amino acid ionic liquids (Bmim[AA]) on the degradation of the organophosphorus pesticide, Paraoxon®(2018) Morales Oyarzún, Javiera Ignacia; Figueroa, Roberto; Rojas Guerrero, Mabel Natalia; Millán Retamal, Daniela Andrea; Tapia Apati, Ricardo; Pavez Guerrero, Paulina Isabel
- ItemEffect of amino acid addition on the micelle formation of the surface-active ionic liquid 1-tetradecyl-3-methylimidazolium bromide in aqueous solution(2019) Rojas Guerrero, Mabel Natalia; Miskolczy, Zsombor; Biczok, Laszlo; Pavez Guerrero, Paulina Isabel
- ItemInfluence of the ionic liquid on the rate and the mechanism of reaction of p-nitrophenyl acetate with secondary alicyclic amines(2013) Millán Retamal, Daniela Andrea; Rojas Guerrero, Mabel Natalia; Pavez Guerrero, Paulina Isabel; Isaacs Casanova, Mauricio; Díaz Navarro, Carlos Patricio; Santos, José G.
- ItemMicrowave-assisted nucleophilic degradation of organophosphorus pesticides in propylene carbonate(2020) Millan, D.; Rojas Guerrero, Mabel Natalia; Tapia Apati, Ricardo; Pavez Guerrero, Paulina Isabel
- ItemReaction Mechanism in Ionic Liquids: Kinetics and Mechanism of the Aminolysis of 4-Nitrophenyl Acetate(2016) Pavez Guerrero, Paulina Isabel; Millán Retamal, Daniela Andrea; Rojas Guerrero, Mabel Natalia; Morales Oyarzún, Javiera Ignacia; Santos, José G.
- ItemReaction mechanisms in ionic liquids: the kinetics and mechanism of the reaction of O,O-diethyl (2,4-dinitrophenyl) phosphate triester with secondary alicyclic amines(2016) Pavez Guerrero, Paulina Isabel; Millán Retamal, Daniela Andrea; Morales Oyarzún, Javiera Ignacia; Rojas Guerrero, Mabel Natalia; Céspedes, Daniel; Santos, José G.
- ItemToward a pKa scale of N-base amines in ionic liquids(2014) Millán Retamal, Daniela Andrea; Rojas Guerrero, Mabel Natalia; Santos Blanco, José Guillermo; Morales Oyarzún, Javiera Ignacia; Isaacs Casanova, Mauricio; Díaz, C.; Pavez Guerrero, Paulina Isabel