Jump to main content
Jump to site search

Issue 16, 2012
Previous Article Next Article

A facile and highly sensitive probe for Hg(II) based on metal-induced aggregation of ZnSe/ZnS quantum dots

Author affiliations

Abstract

Sensitive and selective detection strategies for toxic heavy metal ions, which are rapid, cheap and applicable to environmental and biological fields, are of significant importance. As a result of specific interaction between thiol(s) used as ligands and heavy metal ions, the photoluminescence intensity of quantum dots (QDs) in PBS buffer solution was quenched and the aggregation of QDs was formed at the same time. Herein, we present water-soluble, low toxic QDs, ZnSe/ZnS, which were applied for ultrasensitive Hg2+ ion detection with a low detection limit (2.5 nM). In addition, a model has been proposed to explain the aggregation of QDs in the presence of heavy metal ions such as Hg2+ ions.

Graphical abstract: A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots

Back to tab navigation

Publication details

The article was received on 06 Mar 2012, accepted on 05 Jun 2012 and first published on 13 Jun 2012


Article type: Paper
DOI: 10.1039/C2NR31238G
Citation: Nanoscale, 2012,4, 4996-5001
  •   Request permissions

    A facile and highly sensitive probe for Hg(II) based on metal-induced aggregation of ZnSe/ZnS quantum dots

    J. Ke, X. Li, Y. Shi, Q. Zhao and X. Jiang, Nanoscale, 2012, 4, 4996
    DOI: 10.1039/C2NR31238G

Search articles by author

Spotlight

Advertisements