Preparation of Fullerene (C-60) Based SiO2 Sonogel Hybrid Composites: UV Laser Induced Photo-Polymerization, Morphological, and Optical Properties
Por:
Morales-Saavedra, OG, Castaneda, R, Banuelos, JG, Carreon-Castro, MD
Publicada:
1 jul 2008
Resumen:
Fullerene (C-60) spheres were successfully embedded by diffusion into a catalyst-free SiO2 sonogel network. By this method, homogeneous and stable solid state hybrid samples suitable for optical characterization were produced. Due to the high porosity exhibited by the sonogel matrix on the nanometric length-scale, the preparation of several C-60 doped composites with variable dopant concentrations was achieved. The obtained bulk hybrids were irradiated with a pulsed Kr-F laser system in order to induce photo-polymerization of the implanted C-60 guest molecules at optimal experimental conditions established according to the pulsed laser photoacoustic technique (LPAT). The adequate purity level displayed by the sonogel route allowed us to perform optimal optical characterizations of these composites (reference hybrids and photo-polymerized samples) in order to evaluate their photo-physical properties for potential photonic applications. In this work the sonolysis process used to prepare
Filiaciones:
Morales-Saavedra, OG:
Univ Nacl Autonoma Mexico, CCADET, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Lab Nonlinear Opt, Mexico City 04510, DF, Mexico
Castaneda, R:
Univ Nacl Autonoma Mexico, CCADET, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Lab Nonlinear Opt, Mexico City 04510, DF, Mexico
Banuelos, JG:
Univ Nacl Autonoma Mexico, CCADET, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Lab Nonlinear Opt, Mexico City 04510, DF, Mexico
Carreon-Castro, MD:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
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