Browsing by Author "Bravo, D."
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- ItemImpact of network payment schemes on transmission expansion planning with variable renewable generation(2016) Bravo, D.; Sauma Santis, Enzo Enrique; Contreras, J.; de la Torre, S.; Aguado, J.; Pozo, David
- ItemInteractions of pannexin 1 with NMDA and P2X7 receptors in central nervous system pathologies: Possible role on chronic pain(2015) Bravo, D.; Maturana Fourniel, Carola Jeannette
- ItemSpectroscopic Properties and Biocompatibility Studies of CdTe Quantum Dots Capped with Biological Thiols(AMER SCIENTIFIC PUBLISHERS, 2012) Diaz, V.; Ramirez Maureira, M.; Monras, J. P.; Vargas, J.; Bravo, D.; Osorio Roman, I. O.; Vasquez, C. C.; Perez Donoso, J. M.CdTe quantum dots (QDs) capped with two relevant biological thiols, glutathione (GSH) or cysteine (Cys) were synthesized in aqueous solution using CdCl2, K2TeO3 and NaBH4 and their chemical, spectroscopic and biocompatibility properties were assessed. Synthesized nanoparticles (NPs) are 3-6 nm in diameter, with emission spectra between 480-580 nm depending on QDs size, and emission quantum yields between 0.35-0.65. The toxicity of thiol-capped CdTe NPs to different bacterial strains was determined. Increased biocompatibility for Cys-capped QDs was observed. In addition, QDs uptake by eukaryotic cells was evaluated by fluorescence microscopy. CdTe-GSH NPs were incorporated into MKN45 cells only in the presence of lipofectamine. On the other hand, although CdTe-Cys NPs were freely incorporated into these cells, the amount of incorporation as well as the number of fluorescent cells was lower than that observed with GSH-capped QDs. Finally, no significant changes in cell morphology as a consequence of GSH- or Cys-capped QDs incorporation were observed. Summarizing, our results indicate that the as-synthesized GSH- and Cys-capped QDs display differential spectroscopic properties and cellular interactions, being CdTe-Cys more biocompatible than CdTe-GSH NPs.
- ItemSurface characterization of GSH-CdTe quantum dots(2013) Gautier, J.; Monras, J.; Osorio Román, Igor; Vásquez, C.; Bravo, D.; Herranz, T.; Marco, J.; Pérez Donoso, J.
- ItemSynthesis and characterization of new spirobisindane-based poly(imide)s : Structure effects on solubility, thermal behavior, and gas transport properties(2020) Jessop Rivera, Ignacio; Bravo, D.; Duran, E.; Rodríguez González, Fidel E.; Tagle Domínguez, Luis Hernán; Coll Herrera, Deysma; Ortiz, P.; Mirabal, Y.; Terraza Inostroza, Claudio; Tundidor Camba, Alain; Martin-Trasanco, R.