Jump to main content
Jump to site search


A selective nanosensor for ultrafast detection of Cu2+ ions based on C5 DNA-templated gold nanoclusters and Fenton-like reaction

Abstract

Copper pollution has become a very serious problem in modern society as the increasing industrial emission and the acid mine drainage. Copper deficiency or excess copper accumulate in human and animal livers can both bring oxidative stress and severe disorders. Thus, the development of simple and efficient strategy for Cu2+ ions detection in water and blood sample is very necessary and meaningful. In this work, a simple, fast, and sensitive fluorescence method was put forward to detect Cu2+ ions based on C5 DNA-templated gold nanoclusters (AuNCs) and Fenton-like reactions. Under aerobic conditions, ascorbic acid not only is involved in the reduction of Cu2+, but also reacts with O2 to produce H2O2. Then, hydroxyl radical (•OH), yielded by H2O2 and Cu+, can seriously quench the fluorescence of AuNCs. Attributed to the unique Fenton-like between ascorbic acid and the Cu2+ ions, high selectivity was achieved for Cu2+ ions monitoring by this nanosensor, with practical applications in real water and blood samples.

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Sep 2017, accepted on 10 Oct 2017 and first published on 12 Oct 2017


Article type: Paper
DOI: 10.1039/C7AY02247F
Citation: Anal. Methods, 2017, Accepted Manuscript
  •   Request permissions

    A selective nanosensor for ultrafast detection of Cu2+ ions based on C5 DNA-templated gold nanoclusters and Fenton-like reaction

    T. Qing, H. Bu, X. He, D. He, B. Zhou, H. Sun, R. Jia, W. Ma and K. Wang, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY02247F

Search articles by author

Spotlight

Advertisements