Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9575383 | Chemical Physics | 2005 | 7 Pages |
Abstract
We report on the absorbance and photoluminescence spectra of photorefractive polymer composites sensitized by three different types of nanoparticles. Each nanoparticle is passivated by 1-hexadecylamine (HDA) and the composites also consist of the charge transporting matrix poly(N-vinylcarbazole) and the dye 1-(2â²-ethylhexyloxy)-2,5-dimethyl-4-(4-nitrophenylazo) benzene. A strong spectral feature is observed that is attributed to a complex formed between the dye and HDA; elemental analysis indicates that the formation of this complex is determined by the metal content of the nanoparticle surface. The photoluminescence quantum yield for the complex is greatly reduced when the HDA is attached to the nanoparticle, indicating that a charge transfer occurs.
Related Topics
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Physical and Theoretical Chemistry
Authors
Farzana Aslam, David J. Binks, Steve Daniels, Nigel Pickett, Paul O'Brien,