Nanoparticles of aerosil (size from 16 to 40 nm) and zinc oxide (mean size 15 nm) were treated with solutions of perylene dyes, such as Lumogen Red 300, Lumogen Orange 240 and Lumogen Yellow 83  in organic solvents following by their incorporation in poly(vinyl pyrrolidone), polymethylmethacrylate and copolymers of  methyl acrylate and aliphatic cyanoacrylates. Absorbance and fluorescence spectra of prepared nanocomposites are investigated and compared with the spectra of  liquid solutions of corresponding dyes in chlorinated solvents. The quantitative assessment of the relative quantum yield of fluorescence for dye-containing inorganic nanoparticles in their aggregated form and their aggregate-free form after dispersion in polymer media is performed and possible explanation of enhanced fluorescence in case of polymer-based nanocomposites is discussed.

Experimental study of absorbance and fluorescence spectra of perylene dyes absorbed on nanoparticles of aerosil and zinc oxide   dispersed in polymer matrix

247th National Meeting (2014)

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