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Physical and Optical Properties of Silica/Polymer Nanocomposite Inverse Opal

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Silica/polymer nanocomposite inverse opal films were readily fabricated by blending poly(styrene-co-butyl acrylate-co-acrylic acid) latex with colloidal silica particles and subsequent drying at 110 C for 2 h (namely, the “forced-drying” strategy). The structure, mechanical and optical properties, and solvatochromic effect of the inverse opal films were thoroughly examined. SEM and USAXS results indicate that the as-obtained nanocomposite films possess three-dimensionally ordered macropores with fcc structure. DMA and nanoindentation results show that the films possess robust mechanical strength. The films display brilliant monochromatic colors, which can be easily adjusted by the size of the polymer spheres. The position of photonic band gap considerably shifts when the macropores of the films was filled with water, organic solvents or their mixtures. This solvatochromic effect can be used for refractive index sensing and rapid monitoring of the composition of chemical (or biochemical) products.
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Keywords: INVERSE OPAL; NANOCOMPOSITE; POLYMER LATEX; SILICA SOL; STRUCTURE COLOR

Document Type: Research Article

Publication date: 2011-11-01

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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