Now showing items 1-20 of 25

    • Clean singlet oxygen production by a Re 

      Spada, Ramiro M.; Cepeda-Plaza, Marjorie; Gómez, María L.; Günther Sapunar, Germán; Jaque, Pablo; Pizarro, Nancy; Palacios, Rodrigo E.; Vega, Andrés (American Chemical Society, 2015)
      © 2015 American Chemical Society.Rhenium complexes are versatile molecular building blocks whose tunable photophysical properties are useful in diverse opto-related applications. Herein we report the synthesis and ...
    • Clean Singlet Oxygen Production by a ReI Complex Embedded in a Flexible Self-Standing Polymeric Silsesquioxane Film 

      Spada, Ramiro M.; Cepeda Plaza, Marjorie; Gómez, María L.; Günther Sapunar, Germán; Jaque, Pablo; Pizarro, Nancy; Palacios, Rodrigo E.; Vega, Andrés (American Chemical Society, 2015)
      Rhenium complexes are versatile molecular building blocks whose tunable photophysical properties are useful in diverse opto-related applications. Herein we report the synthesis and characterization of a novel ReI ...
    • Dual Emission of a Novel (P,N) Re 

      Pizarro, Nancy; Duque, Mario; Chamorro, Eduardo; Nonell, Santi; Manzur Saffie, Jorge; De la Fuente, Julio; Günther Sapunar, Germán; Cepeda Plaza, Marjorie; Vega, Andrés (American Chemical Society, 2015)
      © 2015 American Chemical Society. The spectroscopic, electrochemical, and photophysical properties of the new complex [P,N-{(C<inf>6</inf>H<inf>5</inf>)<inf>2</inf>(C<inf>5</i ...
    • Dual Emission of a Novel (P,N) Re-I Complex: A Computational and Experimental Study on [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)Br] 

      Pizarro, Nancy; Duque, Mario; Chamorro, Eduardo; Nonell, Santi; Manzur Saffie, Jorge; Fuente Urrutia, Julio de La; Günther Sapunar, Germán; Cepeda Plaza, Marjorie; Vega, Andrés (American Chemical Society, 2015)
      The spectroscopic, electrochemical, and photophysical properties of the new complex [P,N-{(C6H5)(2)(C5H4N)-P}Re(CO)(3)Br] are reported. The UV-vis spectrum in dichloromethane shows an absorption maximum centered at 315 rim ...
    • Electronic and Photophysical Properties of Re I (CO) 3 Br Complexes Modulated by Pyrazolyl-Pyridazine Ligands 

      Saldías, Marianela; Guzmán, Nicolás; Palominos, Franco; Sandoval-Altamirano, Catalina; Günther, Germán; Pizarro, Nancy; Vega, Andrés (American Chemical Society, 2019)
      The direct reaction of a series of substituted (1H-pyrazol-1-yl)pyridazine (L I : 6-(1H-pyrazolyl)pyridazine; L II : 3-chloro-6-(1H-pyrazole-1-yl)-pyridazine; L III : 6-(1H-3,5-dimethylpyrazolyl)pyridazine-3-carboxylic ...
    • Flavonoids in Microheterogeneous Media, Relationship between Their Relative Location and Their Reactivity towards Singlet Oxygen 

      Günther Sapunar, Germán; Berríos, Eduardo; Pizarro, Nancy; Valdés Camus, Karina; Montero, Guillermo; Arriagada, Francisco; Morales Montecinos, Javier (Public Library Science, 2015)
      In this work, the relationship between the molecular structure of three flavonoids (kaempferol, quercetin and morin), their relative location in microheterogeneous media (liposomes and erythrocyte membranes) and their ...
    • Kinetics and photophysical behavior of the P,N-Re-I complex [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)(O-O3SCF3)]: a directly coordinated (and labile) triflate 

      Prado, Gaspar; Ibañez, María Belén; Acosta, Alison; Chamorro, Eduardo; Hermosilla Ibañez, Patricio; Günther Sapunar, Germán; Pizarro, Nancy; Vega, Andrés (Elsevier, 2017)
      The reaction of [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)Br] (RePNBr) with silver triflate leads to the complex [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)(O-CF3SO3)] (RePNTfO) with moderate yield. This new P,N-Re-I triflate compound contains ...
    • Kinetics and photophysical behavior of the P,N-ReI complex [P,N-{(C6H5)2(C5H4N)P}Re(CO)3(O-O3SCF3)]: A directly coordinated (and labile) triflate 

      Prado, Gaspar; Ibañez, María Belén; Acosta, Alison; Chamorro, Eduardo; Hermosilla-Ibáñez, Patricio; Günther Sapunar, Germán; Pizarro, Nancy; Vega, Andrés (Elsevier Ltd, 2017)
      © 2017 Elsevier Ltd The reaction of [P,N-{(C6H5)2(C5H4N)P}Re(CO)3Br] (RePNBr) with silver triflate leads to the complex [P,N-{(C6H5)2(C5H4N)P}Re(CO)3(O-CF3SO3)] (RePNTfO) with moderate yield. This new P,N-ReI triflate ...
    • Macrocyclic ZnII and CuII complexes as guests of the hybrid composites based on the layered MnPS3 phase. Comparison of spectroscopic properties 

      Fuentealba, Pablo; Serón, Lorenzo; Sánchez, Camila; Manzur Saffie, Jorge; Paredes García, Verónica; Pizarro, Nancy; Cepeda, Marjorie; Venegas Yazigi, Diego; Spodine Spiridonova, Evgenia (Taylor and Francis Ltd., 2014)
      © 2014 Taylor & Francis. A family of macrocyclic complexes [M2LnCl2] have been synthesized and characterized (M: CuII or ZnII; Ln: macrocyclic ligand derived from 2-hydroxy-5-methyl-1,3-benzenedicarbaldehyde and different ...
    • Photophysics and Photochemistry of Naphthoxazinone Derivatives 

      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 ...
    • Photosensitized generation of singlet molecular oxygen by aryloxazinones 

      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 ...
    • Solvent and Media Effects on the Photophysics of Naphthoxazole Derivatives 

      Curitol, Manuel; Ragas, Xavier; Nonell, Santi; Pizarro, Nancy; Encinas, María V.; Rojas, Pedro; Zanocco, Renzo P.; Lemp Miranda, Else; Günther Sapunar, Germán; Zanocco Loyola, Antonio (The American Society of Photobiology, 2013)
      The photophysical properties of 2-phenyl-naphtho[1,2-d][1,3] oxazole, 2(4-N,N-dimethylaminophenyl)naphtho[1,2-d][1,3] oxazole and 2(4-N,N-diphenylaminophenyl) naphtho[1,2-d] [1,3]oxazole were studied in a series of ...
    • Solvent effect on the quenching of singlet oxygen by 3-methylindole 

      Lemp Miranda, Else; Pizarro, Nancy; Encinas, María Victoria; Zanocco Loyola, Antonio (2001)
      Detection of O2(1Δg) emission, λmax = 1270 nm, following laser excitation and steady-state methods were employed to measure total, kT, and chemical, kR, reaction rate constants for the reaction between 3-methylindole and ...
    • Solvent effect on the sensitized photooxygenation of 2,3-dihydropyrazine derivatives 

      Lemp Miranda, Else; Zanocco Loyola, Antonio; Günther Sapunar, Germán; Pizarro, Nancy (AMER CHEMICAL SOC, 2003-04-18)
      Detection Of O-2((1)Delta(g),) phosphorescence emission, lambda(max) = 1270 nm, following laser excitation and steady-state methods was employed to determine the total rate constant, k(T), and the chemical reaction rate ...
    • Solvent effect on the sensitized photooxygenation of cyclic and acyclic alpha-diimines 

      Lemp Miranda, Else; Zanocco Loyola, Antonio; Günther Sapunar, Germán; Pizarro, Nancy (PERGAMON-ELSEVIER SCIENCE LTD, 2006-11-13)
      The reaction of singlet molecular oxygen with a series of cyclic and acyclic alpha-diimines was studied. Time-resolved methods were used to measure total reaction rate constants and steady-state methods were used to determine ...
    • Solvent effect on the sensitized photooxygenation of cyclic and acyclic α-diimines 

      Lemp Miranda, Else; Zanocco Loyola, Antonio; Günther Sapunar, Germán; Pizarro, Nancy (2006)
      The reaction of singlet molecular oxygen with a series of cyclic and acyclic α-diimines was studied. Time-resolved methods were used to measure total reaction rate constants and steady-state methods were used to determine ...
    • Solvent effects on the sensitized photoxygenation of lidocaine 

      Zanocco Loyola, Antonio; Lemp Miranda, Else; Pizarro, Nancy; De la Fuente, Julio; Günther Sapunar, Germán (Elsevier, 2001)
      Detection of O2(1Δg) phosphorescence emission, λmax=1270nm, following laser excitation and steady state methods were employed to determine both the total constant, kT LID, and the chemical reaction rate constants, kR LID, ...
    • Solvent, coordination and hydrogen-bond effects on the chromic luminescence of the cationic complex [(phen)(H2O)Re(CO)(3)] 

      Mella, Pablo; Cabezas, Karina; Cerda, Carla; Cepeda-Plaza, Marjorie; Günther Sapunar, Germán; Pizarro, Nancy; Vega, Andrés (Royal Society of Chemistry, 2016)
      The [(phen)((HO)-O-2)Re(CO)(3)](+)(CF3SO3)(-) salt, 1(+)(CF3SO3-), has been crystallized in the form of two new solvates, [(phen)(H2O)Re(CO)(3)](+)(CF3SO3)(-)center dot(C4H8O)(0.5) and [(phen)(H2O)Re(CO)(3)](+)(CF3SO3)(-)center ...
    • Structural and photophysical properties of [(CO) 

      Gallardo, Hector; Cepeda-Plaza, Marjorie; Nonell, Santi; Günther Sapunar, Germán; Chamorro, Eduardo; Pizarro, Nancy; Vega, Andrés (Elsevier Ltd, 2015)
      © 2015 Elsevier Ltd. All rights reserved.The multimetallic complex [[(CO)<inf>3</inf>(phen)Re(μ-Br)Re(phen)(CO)<inf>3</inf>][(CO)<inf>3</inf>Re(μ-Br)<inf>3</inf>Re(CO)<i ...
    • Structural and photophysical properties of [(CO)(3)(phen) Re(mu-Br)Re(phen)(CO)(3)](+)[(CO)(3)(+)[Re(mu-Br)(3)Re(CO)(3)](-): Where does its luminescence come from? 

      Gallardo, Héctor; Cepeda Plaza, Marjorie; Nonell, Santi; Günther Sapunar, Germán; Chamorro, Eduardo; Pizarro, Nancy; Vega, Andrés (Elsevier, 2015)
      The multimetallic complex [[(CO)(3)(phen) Re(mu-Br)Re(phen)(CO)(3)][(CO)(3)[Re(mu-Br)(3)Re(CO)(3)]]center dot CH2Cl2 was prepared by direct reaction of (Re(CO)(3)(THF)Br)(2) (THF: tetrahydrofuran) and 1,10-phenanthroline ...