Now showing items 21-40 of 57

    • Zanocco Loyola, Antonio; Günther Sapunar, Germán; Fuente, J. R. de la; Lemp Miranda, Else; Pizarro U., N. (1998)
      Detection of O,('A,) phosphorescence emission, A,,,, = 1270 nm, following laser excitation and steady-state competitive methods was employed to measure total rate constants, k,, for the reactions of the diuretic furosemide, ...
    • Lemp Miranda, Else; Zanocco Loyola, Antonio; Lissi Gervaso, Eduardo A. (2003)
      Linear solvation energy relationship, LSER, and theoretical linear solvation energy relationship, TLSER, formalisms are applied to the analysis of solvent effects on singlet oxygen reactions. Treatments allow quantitative ...
    • Saitz Barría, Claudio; Rodríguez, H.; Márquez, Amelia; Cañete, Alvaro; Jullian Matthaei, Carolina; Zanocco Loyola, Antonio (MARCEL DEKKER INC, 2001)
      A method that allows the synthesis of 4 different heterocyclic systems of fused aryl oxazoles, i.e., naphtho[1,2-d], naphtho[2,1-d], naphtho[2,3-d], and benzo[d]oxazoles in reasonable yield is del scribed. This method ...
    • Günther Sapunar, Germán; Lemp Miranda, Else; Zanocco Loyola, Antonio (SOCIEDAD CHILENA DE QUIMICA, 2000-12)
      Time resolved near IR luminescence detection of singlet oxygen, O-2((1)Delta (g)), and steady-state photolysis experiments were performed to study in detail limitations and approaches involved when 9,10-dimethylanthracene ...
    • Paredes García, Verónica; Venegas Yazigi, Diego; Cabrera, A.; Valencia Gálvez, P.; Arriagada, M.; Ruiz León, Domingo; Zanocco Loyola, Antonio; Spodine Spiridonova, Evgenia (2009)
      In this work, we present the synthesis and optical study of the binuclear zinc(II) macrocyclic complexes, derived from 4-methyl-2,6-diformylphenol and 1,2-diaminobenzene (H2L). Two zinc macrocyclic complexes with different ...
    • Nonell, Santi; Ferreras, Lourdes R.; Cañete, Alvaro; Lemp Miranda, Else; Günther Sapunar, Germán; Pizarro, Nancy; Zanocco Loyola, Antonio (AMER CHEMICAL SOC, 2008-07-18)
      The photophysics and photochemistry of a series of naphthoxazinones have been studied using a combination of methods ranging from steady-state and time-resolved spectroscopic techniques to product analysis. The photophysics ...
    • Lemp Miranda, Else; Cañete, Alvaro; Günther Sapunar, Germán; Pizarro, Nancy; Zanocco Loyola, Antonio (ELSEVIER, 2008-09-25)
      The photophysical properties, the capacity to produce singlet molecular oxygen by sensitization and the photostability of a series of 20 aryloxazinones and one quinoxalinone have been evaluated using a combination of methods ...
    • Valencia U, Cristina; Lemp Miranda, Else; Zanocco Loyola, Antonio (2003)
      Detection of singlet molecular oxygen, O2(1Δ g), by phosphorescence emission, λ = 1270 nm, following laser excitation was employed to measure the quantum yield of O2( 1δg) generation by the antimalaric drugs quinine, ...
    • Morales, Javier; Günther Sapunar, Germán; Zanocco Loyola, Antonio; Lemp Miranda, Else (2012)
      A high-performance liquid chromatography (HPLC) method for the determination of urocanic acid isomers extracted from human skin has been developed. Urocanic acid is a compound present in skin, accumulated in trans form ...
    • Lemp Miranda, Else; Günther Sapunar, Germán; Castro, Rafael; Curitol, Manuel; Zanocco Loyola, Antonio (ELSEVIER SCIENCE, 2005-10-31)
      Detection of O-2((1)Delta(g)) emission, lambda(max) = 1270 nm, following laser excitation and steady-state methods were employed to measure the total reaction rate constant, k(T), and the reactive reaction rate constant, ...
    • Lemp Miranda, Else; Günther Sapunar, Germán; Castro, Rafael; Curitol, Manuel; Zanocco Loyola, Antonio (2005)
      Detection of O2(1Δg) emission, λmax = 1270 nm, following laser excitation and steady-state methods were employed to measure the total reaction rate constant, kT, and the reactive reaction rate constant, kR, for the reaction ...
    • Zanocco Loyola, Antonio; Günther Sapunar, Germán; Lemp Miranda, Else; Lissi Gervaso, Eduardo A. (1998)
      The cationic dye Methylene Blue included in the internal aqueous microphase of dioctadecyldimethylammonium chloride (DODAC) vesicle shows the typical monomer–dimer equilibrium observed in homogenous aqueous solutions. ...
    • Miskoski, Sandra; Soltermann, Arnaldo T.; Molina, Patricia G.; Günther Sapunar, Germán; Zanocco Loyola, Antonio; García, Norman A. (AMER SOC PHOTOBIOLOGY, 2005-03)
      Thyronine derivatives are essential indicators of thyroid gland diseases in clinical diagnosis and are currently used as standards for developing ordinary biochemical assays. Photooxidation of gland hormones of the thyronine ...
    • Miskoski, Sandra; Soltermann, Arnaldo T.; Molina, Patricia G.; Günther Sapunar, Germán; Zanocco Loyola, Antonio; García, Norman A. (2005)
      Thyronine derivatives are essential indicators of thyroid gland diseases in clinical diagnosis and are currently used as standards for developing ordinary biochemical assays. Photo-oxidation of gland hormones of the thyronine ...
    • Lemp Miranda, Else; Zanocco Loyola, Antonio; Günther Sapunar, Germán (ELSEVIER SCIENCE SA, 2001-12-31)
      Detection of O-2((1)Delta(g)) phosphorescence emission, lambda(max) = 1270 nm, following laser excitation and steady state methods were employed to determine the total rate constant, k(T), for the reaction between the ...
    • Morales, Javier; Günther Sapunar, Germán; Zanocco Loyola, Antonio; Lemp Miranda, Else (2007-07)
      Detection of singlet oxygen emission, lmax = 1270 nm, following laser excitation and steady-state methods were employed to measure the total reaction rate constant, kT, and the reactive reaction rate constant, kr, for the ...
    • Castañeda Magliona, Fernando; Rivera, E.; Zanocco Loyola, Antonio (Sociedad Chilena de Química, 1980)
      El estudio químico y espectroscópico de los acil etoxicarbonil metilidentrifenilofosforanos I, revela que son compuestos extraordinariamente estables (1). En este trabajo se informa la síntesis de una serie de ílidos ...
    • Gidi Solorzano, Yasser Abraham (Universidad de Chile, 2011)
      En este trabajo se ha estudiado el efecto del solvente sobre las propiedades fotofísicas de 10 derivados del vinil naftoxazol. Las moléculas se han separado en 3 grupos: compuestos que incluyen anillos de i) benceno ...
    • Becerra Pacheco, Natalia Mónica; Nuez, L. R. de la; Zanocco Loyola, Antonio; Lemp Miranda, Else; Günther Sapunar, Germán (ELSEVIER, 2006-01-05)
      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 ...
    • Berríos, Eduardo; Zanocco Loyola, Antonio; Lemp Miranda, Else; Günther Sapunar, Germán (SOC CHILENA QUIMICA, 2008-12)
      The effect of the microenvironment on the Laurdan fluorescence was employed to study the solubilization mechanism of Dipalimtoyl-sn-glycero-3-phosphocholine (DPPC) small unilamellar vesicles with several sucrose monoesters. ...