Now showing items 1-14 of 14

    • Acid- and hydrogen-bonding-induced switching between 22-π and 18-π electron conjugations in 2-aminothiazolo[4,5-c] porphycenes 

      Planas, Oriol; Fernández-Llaneza, Daniel; Nieves, Ingrid; Ruiz González, Rubén; Lemp Miranda, Else; Zanocco Loyola, Antonio; Nonell, Santi (Royal Society of Chemistry, 2017)
      © 2017 the Owner Societies. 2-Aminothiazolo[4,5-c]porphycenes are a novel class of 22-π electron aromatic porphycene derivatives prepared by click reaction of porphycene isothiocyanates with primary and secondary amines ...
    • 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 ...
    • Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives 

      Zanocco, Renzo P.; Valdebenito, Silvana; Gidi, Yasser; Zapata Torres, Gerald; Lemp Miranda, Else; Nonell, Santi; Zanocco Loyola, Antonio (Blackwell Publishing Inc., 2018)
      © 2018 The American Society of Photobiology Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light ...
    • Morin Flavonoid Adsorbed on Mesoporous Silica, a Novel Antioxidant Nanomaterial 

      Arriagada, Francisco; Correa Briones, Olosmira; Günther Sapunar, Germán; Nonell, Santi; Mura Mardones, Francisco; Olea Azar, Claudio; Morales Montecinos, Javier (Public Library Science, 2016)
      Morin (2' A, 3, 4' , 5,7-pentahydroxyflavone) is a flavonoid with several beneficial health effects. However, its poor water solubility and it sensitivity to several environmental factors avoid its use in applications like ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Structure-activity study of furyl aryloxazole fluorescent probes for the detection of singlet oxygen 

      Zanocco, Renzo P.; Bresoli-Obach, Roger; Nonell, Santi; Lemp Miranda, Else; Zanocco Loyola, Antonio (Public Library of Science, 2018-07-02)
      In this study, we report the synthesis and the photochemical behavior of a series of new "click-on" fluorescent probes designed to detect singlet oxygen. They include a highly fluorescent chemical structure, an aryloxazole ...
    • Substituent Effect on the Photolability of 4-Aryl-1,4-Dihydropyridines 

      García, Cristóbal; Cabezas, Karina; Nonell, Santi; Núñez Vergara, Luis; Morales Valenzuela, Javier; Günther Sapunar, Germán; Pizarro Urzúa, Nancy Alejandra (The American Society of Photobiology, 2014)
      The electronic nature of substituents attached to the 4-aryl moiety of 1,4-dihydropyridines strongly affects the photophysical and photochemical behavior of these family of compounds. The presence of an electron donor ...
    • Synthesis, physicochemical and photophysical characterization of 4-(1-Pyrenyl)-Butyl-α-d-mannopyranoside 

      Sandoval, Catalina; Arriagada, Franco S.; De la Fuente, Julio; Sánchez, Susana A.; Morales, Javier O.; Pizarro, Nancy; Nonell, Santi; Günther Sapunar, Germán (Sociedade Brasileira de Quimica, 2016)
      © 2016 Sociedade Brasileira de Química. Glycolipids are biomolecules composed of a lipid chain (lipophilic) and a monosaccharide or oligosaccharide as hydrophilic group. Their chemical structure and biological role make ...
    • Synthesis, Physicochemical and Photophysical Characterization of 4-(1-Pyrenyl)‑butyl-α-D-mannopyranoside 

      Sandoval Altamirano, Catalina; Arriagada, Franco; Fuente Urrutia, Julio de la; Sánchez, Susana; Morales Montecinos, Javier; Pizarro, Nancy; Nonell, Santi; Günther Sapunar, Germán (Sociedad Brasileira de Quimica, 2016)
      Glycolipids are biomolecules composed of a lipid chain (lipophilic) and a monosaccharide or oligosaccharide as hydrophilic group. Their chemical structure and biological role make them undoubtedly good candidates for a ...