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- W2035985087 abstract "We report on the immobilization of gold nanoparticles on end-functionalized and solvent responsive polystyrene brushes, grafted on an underlying substrate. The presence of gold nanoparticles on polystyrene brushes was confirmed by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The resulting polystyrene−Au nanoassemblies have been used as the nanosensors for the detection of a variety of organic solvents in surrounding media. The sensing mechanism is based upon the change in the proximity of the immobilized gold nanoparticles as a consequence of the solvent induced reversible swelling−deswelling of polystyrene chains. The sensing ability was demonstrated by a simple analytic tool, i.e., UV−vis spectroscopy, through a shift in plasmon resonance band of immobilized Au nanoparticles. A dramatic blue shift of 32 nm in the surface resonance band was observed as the surrounding media of Au immobilized polystyrene brushes (Au−PS) was changed from air to the toluene. The described approach is facile and versatile in nature, which can be used for the fabrication of a variety of nanosensors based on the polymer brushes−nanoparticle assemblies." @default.
- W2035985087 created "2016-06-24" @default.
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- W2035985087 date "2008-10-15" @default.
- W2035985087 modified "2023-09-29" @default.
- W2035985087 title "Gold Nanoparticles Immobilized on Stimuli Responsive Polymer Brushes as Nanosensors" @default.
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- W2035985087 doi "https://doi.org/10.1021/ma801557u" @default.
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