Browsing by Author "Zanocco Loyola, Antonio"

Now showing items 1-17 of 17

    • Anomalous Dependence of Pyrene Spectra and Lifetimes with Temperature in Large Unilamellar Vesicles from ... 
      Lissi Gervaso, Eduardo A.; Abuin, E.; Saez, M.; Zanocco Loyola, Antonio; Disalvo, A. (1992)
      Lifetimes of pyrene incorporated into large unilamellar vesicles of dipalmitoylphosphatidylcholine and dioctadecyldimethylammonium chloride increase when the temperature increases prior to the melting temperature of the ...
    • Antioxidant capacity of diethyldithiocarbamate in a metal independent lipid peroxidative process 
      Zanocco Loyola, Antonio; Pavez, R.; Videla Cabrera, Luis; Lissi Gervaso, Eduardo A. (1989)
      2,2′-Azobis-[2-amidinopropane] initiated lipid peroxidation of egg yolk phosphatydil choline liposomes was measured by oxygen uptake and the emitted visible luminescence. Lipid peroxidation involved a chain process (kinetic ...
    • Bromide/chloride counterion exchange at the surfaces of dioctadecyldimethylammonium vesicles 
      Lissi Gervaso, Eduardo A.; Abuin, E. B.; Zanocco Loyola, Antonio; Backer, C. A.; Whitten, D. G. (1989)
      The exchange between bromide and chloride counterions at the surfaces of dioctadecyldimethylammonium vesicles has been examined through fluorescence quenching experiments. The quenching of the fluorescence of vesicle-incorporated ...
    • Caracterización físico química de micelas de monoésteres de sacarosa 
      Becerra Pacheco, Natalia Mónica (Universidad de Chile, 2005)
      Con el objetivo de contribuir al conocimiento del comportamiento básico de este tipo de compuestos y sus potenciales aplicaciones, en esta memoria se estudiaron las propiedades fisicoquímicas de soluciones acuosas de ...
    • Effect of stirring on photoinitiated polymerization 
      Zanocco Loyola, Antonio; Garrido, J.; Lissi Gervaso, Eduardo A. (1988)
      The polymerization of methyl methacrylate photosensitized by benzion methyl ether over a wide range of initiator absorbances was investigated. Both the polymerization rate and the polymer molecular weight distribution are ...
    • Estudio de las propiedades fotofísicas de derivados de benzotiazoles 
      Valdebenito Silva, Silvana Abisag Constanza (Universidad de ChileCyberDocs, 2011)
      Los benzotiazoles son moléculas orgánicas heterocíclicas, que, debido a la presencia del átomo de azufre en su estructura presentan propiedades químicas muy particulares. En general los compuestos derivados del benzotiazol ...
    • Estudio termodinámico de la formación de complejos de inclusión de ariloxazinonas y ariloxazoles con ... 
      Valdebenito Silva, Silvana Abisag (Universidad de Chile, 2016)
      En esta tesis se estudiaron tanto las características fisicoquímicas de los complejos de inclusión de derivados de ariloxazinonas y arilnaftoxazoles en ciclodextrinas y se determinaron los parámetros termodinámicos que ...
    • Linear free energy relationship analysis of solvent effect on singlet oxygen reactions with mono and ... 
      Castro Olivares, Rafael; Günther Sapunar, Germán; Zanocco Loyola, Antonio; Lemp Miranda, Else (2009)
      Detection of O2(1 g) emission, max = 1270 nm, following laser excitation and steady-state methodswere employed to measure the total reaction rate constant, kT, and the reactive reaction rate constant, kR, for the reaction ...
    • Naphthoxazole-Based Singlet Oxygen Fluorescent Probes 
      Ruiz González, Rubén; Zanocco, Renzo P.; Gidi, Yasser; Zanocco Loyola, Antonio; Nonell, Santi; Lemp Miranda, Else (The American Society of Photobiology, 2013)
      In this study, we report the synthesis and photochemical behavior of a new family of photoactive compounds to assess its potential as singlet oxygen (1O2) probes. The candidate dyads are composed by a 1O2 trap plus a ...
    • Photochemistry of alkyl pyruvates 
      Scaiano, J. C.; Encinas, M. V.; Lissi Gervaso, Eduardo A.; Zanocco Loyola, Antonio; Das, P. K. (1986)
      The photochemistry of alkyl pyruvates of the type CH3COCOOCHR2 has been examined in solution using a combination of product studies and laser flash photolysis techniques. The results indicate that the main reaction path ...
    • Photochemistry of ethyl esters of α-oxo-carboxylic acids 
      Zanocco Loyola, Antonio; Soto, E. A.; Lissi Gervaso, Eduardo A.; Scaiano, J. C. (1990)
      The photochemistry of ethyl esters of α-oxo-carboxylic acids of the type RCOCO2CH2CH3 was examined using a combination of steady state irradiation and laser flash photolysis techniques. The experimental results indicate ...
    • Polarographic study of the photodecomposition of nimodipine 
      Zanocco Loyola, Antonio; Diaz, L.; Lopez, M.; Núñez Vergara, Luis; Squella Serrano, Juan (1992)
      Nimodipine, a calcium antagonist belonging to the dihydropyridine family, produces a well‐defined polarographic peak due to the four‐electron reduction of the nitro group. This peak was used to track the photodecomposition ...
    • Síntesis, fotoquímica y fotofísica de una sonda fluorescente para la detección de oxígeno molecular singulete ... 
      Cortés Guajardo, Catalina Andrea (Universidad de Chile, 2020)
      El oxígeno singulete (1O2) es una especie electrónicamente excitada del oxígeno molecular y altamente reactiva. Pertenece a la familia de las especies reactivas de oxígeno (ROS), protagonistas de diversos procesos fisiológicos ...
    • Solubilization of dodac small unilamellar vesicles by sucrose esters: A fluorescence study 
      Becerra,; De La Nuez,; Zanocco Loyola, Antonio; Lemp Miranda, Else; Günther Sapunar, Germán (Elsevier, 2006)
      A fluorescence method was employed to study the solubilizing interactions of several sucrose esters with Dioctadecyldimethylammonium chloride small unilamellar vesicles. In this paper we studied four different alkyl esters ...
    • Solubilization of lipid bilayers by myristyl sucrose ester: effect of cholesterol and phospholipid head group size 
      Toro, C.; Sánchez, S. A.; Zanocco Loyola, Antonio; Lemp Miranda, Else; Gratton, E.; Gunthera, G. (Elsevier, 2009-02)
      The solubilization of biological membranes by detergents has been used as amajor method for the isolation and purification of membrane proteins and other constituents. Considerable interest in this field has resulted ...
    • Synthesis of 2-(n-(N,N,N-trimethyl)-n-alkyl)-5-alkylfuryl halides - Useful probes for studying singlet ... 
      Castañeda Magliona, Fernando; Zanocco Loyola, Antonio; Meléndrez Cancino, Mónica Ximena; Günther Sapunar, Germán; Lemp Miranda, Else (ELSEVIER SCIENCE SA, 2004-12-01)
      Three lipid-soluble furan derivatives, 2,5-disubstituted with different n-alkyl chains, and a terminal trimethylammonium group were obtained by reaction of a metalated monoalkylfuran with alkyl dihalides under conditions ...
    • Temperature Dependence of the Photochemistry of Aryl Alkyl Ketones 
      Encina, M. V.; Lissi Gervaso, Eduardo A.; Lemp Miranda, Else; Zanocco Loyola, Antonio; Scaiano, J. C. (1983)
      The photochemistry of several phenyl alkyl and p-anisyl alkyl ketones has been examined using laser flash photolysis and conventional quantum yield techniques. The methoxy-substituted ketones show higher activation energies ...