Now showing items 1914-1933 of 2801

    • Fuente, J. de la; Neira Pacheco, Verónica Alejandra; Saitz Barría, Claudio; Jullian Matthaei, Carolina; Sobarzo Sánchez, Eduardo (AMER CHEMICAL SOC, 2005-07-07)
      Photoreduction by amines of oxoisoaporphine dyes occurs via a stepwise mechanism of electron-proton electron transfer that leads to the metastable N-hydrogen oxoisoaporphine anion. During photoreduction that occurs from ...
    • De la Fuente, Julio; Aliaga, Christian; Poblete, Cristian; Zapata, Gerald; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Cañete, Alvaro; Kciuk, Gabriel; Sobarzo Sánchez, Eduardo; Bobrowski, Krzysztof (2009)
      Photoreduction of oxoisoaporphine (OIA) (l-aza-benzo-[de]anthracen-7-one) and its 5-methoxy (5-MeOOIA) derivative by selected amines (two non-a-hydrogen-donating amines (l,4-diaza[2.2.2]-bicyclooctane (DABCO) and ...
    • Fuente, J. de la; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Sobarzo Sánchez, Eduardo; Neira Pacheco, Verónica Alejandra; González, C.; López, R.; Pessoa Mahana, Hernán (ROYAL SOC CHEMISTRY, 2004)
      Photoreduction of 5,6-dimethoxy-, 5-methoxy- and 2,3-dihydro-7H-dibenzo[de, h] quinolin-7-one (A) by tertiary amines in oxygen-free solutions generates long-lived semi-reduced metastable photoproducts, A - NH-, via a ...
    • 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 ...
    • Almada, M.; Leal Martínez, B. H.; Hassan, N.; Kogan Bocian, Marcelo; Burboa, M. G.; Topete, A.; Valdez, M. A.; Juarez, J. (Elsevier, 2017)
      Gold nanorods (GNR) use has been proposed in medical applications because of their intrinsic photothermal properties. However, the presence of CTAB molecules adsorbed onto the surface of GNRs results in a highly cytotoxic ...
    • Mendizábal Emaldía, Fernando; Olea Azar, Claudio; Briones, Rodolfo (JOHN WILEY & SONS INC, 2001-04-15)
      Electronic structure aspects related to the semiconducting properties of monomers and polymers of phythalocyanoiron with bidentate bridging ligands, PcFe-L-2 and -[PcFe(L)](n), have been investigated from density functional ...
    • Payacan, Claudia; Moncada, Ximena; Rojas, Gloria; Clarke, Andrew; Chung, Kuo Fang; Allaby, Robin; Seelenfreund, Daniela; Seelenfreund, Andrea (Oxford University Press, 2017)
      Background and Aims Paper mulberry or Broussonetia papyrifera (L.) L'Her. ex Vent. (Moraceae) is a dioecious species native to continental South-east Asia and East Asia, including Taiwan, that was introduced to the Pacific ...
    • Puente Díaz, Luis; Pinto Muñoz, Claudia A.; Castro Montero, Eduardo; Cortés, Misael (Elsevier Ltd., 2011)
      The main objective of this work is to spread the physicochemical and nutritional characteristics of the Physalis peruviana L., fruit and the relation of their physiologically active components with beneficial effects on ...
    • Fuentealba Castro, Pablo; Olea Azar, Claudio; Aguilar Bolados, H.; Audebrand, N.; Santana, R. C. de; Doerenkamp, C.; Eckert, H.; Magon, C. J.; Spodine Spiridonova, Evgenia (Royal Society of Chemistry, 2020)
      Four bimetallic phases of the thiophosphate family have been synthesized by the cationic exchange reaction using a freshly prepared K0.5Cd0.75PS3 precursor phase and methanolic solutions of nitrates of the divalent cations ...
    • Bracamonte, María V.; Yáñez Soto, Claudia; Bollo Dragnic, Soledad; Rivas, Gustavo A.; Ferreyra, Nancy F. (Elsevier, 2014)
      In this work, we characterize the electrochemical behavior of a new ferrocenyl-modified, hyperbranched poly(ethylenimine) (HBPei-Fc). The effects of the ionic strength, pH and the nature of the anion of the supporting ...
    • Solar, Paula; Herrera, Natalia; Cea, Diego; Devis, Sindy; González Nilo, Fernando; Juica, Natalia; Moreno, Mabel; Gai Hernández, María Nella; Brescia, Ignacio; Henríquez Barrera, Soledad; Velásquez, Luis (Springer, 2020)
      Lung cancer is a neoplasm associated with bacterial infections, main reason, to design a combined chemotherapy and antimicrobial treatment. Due to adverse drug reactions, we designed and synthetized polymer Poly(3-hydrox ...
    • Erazo, Silvia; García, R.; Backhouse Erazo, Nadine; Lemus Gutiérrez, Igor; Delporte Vergara, Carla; Andrade, C. (ELSEVIER SCI IRELAND LTD, 1997-07)
      The anti-inflammatory property of Lomatia hirsuta (Lam.) Diels ex Macbr. (Proteaceae), leaves (radal), a plant used in Chilean traditional medicine for bronchial troubles and asthma, was evaluated. The biological assays ...
    • Armas-Ricard, Merly de; Quinán Cárdenas, Francisco; Sanhueza, Harold; Pérez Vidal, Rodrigo; Mayorga Lobos, Cristina Alejandra; Ramírez Rodríguez, Oney (MDPI, 2021)
      The genus Nothofagus is one of the most abundant in the subantarctic Patagonian forests. Five species inhabit these ecosystems, three evergreen (Nothofagus betuloides, Nothofagus dombeyi, and Nothofagus nitida) and two ...
    • Fredes, Carolina; Parada, Alejandra; Salinas, Jaime; Robert Canales, Paz (MDPI, 2020)
      Murta and calafate have been traditionally used by indigenous and rural peoples of Chile. Research on murta and calafate has gained interest due to their attractive sensory properties as well as a global trend in finding ...
    • Ordenes Aenishanslins, N.; Anziani Ostuni, G.; Vargas Reyes, M.; Alarcón, J.; Tello, A.; Pérez Donoso, José (2016)
      Here we report the use of pigments produced by UV-resistant Antarctic bacteria as photosensitizers in Dye Sensitized Solar Cells (DSSCs). Pigments were obtained from red and yellow colored psychrotolerant bacteria isolated ...
    • González, Rodrigo; Tirado, Ares; Balanda, Monserrat; Alvo Abodovsky, Miriam; Barquín, Inés; Durruty Alfonso, Pilar; Lobos, S.; Seelenfreund Hirsch, Daniela (SOC BIOLGIA CHILE, 2007)
      Diabetic nephropathy (DN) is one of the major complications of type 2 diabetes and is associated with coronary disease. Nephrin, a protein mainly expressed in glomeruli, is decreased in DN and other kidney diseases. Since ...
    • Hernández, Francisco; Cordano, G.; Medina, Jorge; Rivera, E. (Colegio de Químico Farmacéutico de Chile, 1979)
      Estas dos especies arbóreas tienen grandes proyecciones económicas aparte de las tradicionales de madera y derivados. En nuestro país hay grandes extensiones de terrenos plantados con Pino y con Eucaliptus globulus, no ...
    • Oyarzún, María Paz; Tapia Arellano, Andreas; Cabrera, Pablo; Jara Guajardo, Pedro; Kogan, Marcelo J. (MDPI, 2021)
      Alzheimer’s disease (AD), considered a common type of dementia, is mainly characterized by a progressive loss of memory and cognitive functions. Although its cause is multifactorial, it has been associated with the ...
    • Rivera, L. Patricio (1996)
      (2'E, 6'E, 10'E, 14'E)-2-(8',9'-dione-3', 7', 11', 15'-tetramethylhexadeca-2', 6', 10', 14'-tetraenyl)-6-Methyl-1,4-benzoquinone, (2'E, 6'E, 10'E, 14'E)-2-(8'-one, 15'-formyl-3', 7', 11', trimethylhexadeca-2', 6', 10', ...
    • Vieites, Marisol; Otero, Lucía; Santos, Diego; Toloza, Jeannette; Figueroa, Roberto; Norambuena, Ester; Olea Azar, Claudio; Aguirre, Gabriela; Cerecetto, Hugo; González, Mercedes; Morello Casté, Antonio; Maya Arango, Juan; Garat, Beatriz; Gambino, Dinorah (ELSEVIER SCIENCE INC, 2008-05)
      In the search for new therapeutic tools against Chagas’ disease (American Trypanosomiasis) two series of new platinum(II) complexes with bioactive 5-nitrofuryl containing thiosemicarbazones as ligands were synthesized, ...