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The electrochemical detection of tagged nanoparticles via particle-electrode collisions: nanoelectroanalysis beyond immobilisation.

Chemical communications (Cambridge, England) (2012-01-27)
Yi-Ge Zhou, Neil V Rees, Richard G Compton
RÉSUMÉ

The use of particle-impact coulometry in identifying and quantifying nanoparticles tagged (or labelled) with electroactive molecules is demonstrated via the detection of 1,4-nitrothiophenol-tagged silver nanoparticles in aqueous dispersion at potentials more negative than -0.17 V (vs. Ag/AgCl, the reduction potential of nitrothiophenol) via monitoring of particle-electrode collisions.

MATÉRIAUX
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Description du produit

Sigma-Aldrich
Thiophenol, 97%
Sigma-Aldrich
Thiophenol, ≥99%
Sigma-Aldrich
Sodium thiophenolate, technical grade, 90%
Supelco
Thiophenol, analytical standard