title: The electrochemical detection of tagged nanoparticles via particle-electrode collisions: nanoelectroanalysis beyond immobilisation.
abstract: 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.
authors.affiliation: Dept. of Chemistry, Physical & Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom.
authors.forename: Yi-Ge
authors.initials: YG
authors.lastname: Zhou
authors.forename: Neil V
authors.initials: NV
authors.lastname: Rees
authors.forename: Richard G
authors.initials: RG
authors.lastname: Compton
mesh_terms: D000327:Adsorption; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D053768:Metal Nanoparticles / Q000032:analysis* / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013438:Sulfhydryl Compounds / Q000737:chemistry
chemical_list: D010636:Phenols; D013438:Sulfhydryl Compounds; D012834:Silver; C042983:thiophenol