Label-free fluorescent detection of copper(II) using DNA-templated highly luminescent silver nanoclusters

Min Zhang; Bang-Ce Ye

doi:10.1039/c1an15891k

Label-free fluorescent detection of copper(II) using DNA-templated highly luminescent silver nanoclusters

Analyst. 2011 Dec 21;136(24):5139-42. doi: 10.1039/c1an15891k. Epub 2011 Oct 21.

Authors

Min Zhang¹, Bang-Ce Ye

Affiliation

¹ Lab of Biosystems and Microanalysis, East China University of Science and Technology, Shanghai, China.

PMID: 22016881
DOI: 10.1039/c1an15891k

Abstract

Novel luminescent silver nanoclusters (AgNCs) were synthesized utilizing DNA as templates by a simple, rapid and one-pot procedure. Luminescence studies indicated that these DNA-AgNCs exhibited strong emission with peak maximum at 624 nm. The fluorescence of the DNA-AgNCs was found to be quenched by Cu(2+) enabling its detection with high sensitivity and selectivity.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Borohydrides / chemistry
Copper / analysis*
DNA / chemistry*
Metal Nanoparticles / chemistry*
Silver / chemistry*
Spectrometry, Fluorescence*

Substances

Borohydrides
Silver
Copper
sodium borohydride
DNA