Issue 20, 2012
From the journal:

Analyst

CTAB-capped Mn-doped ZnS quantum dots and label-free aptamer for room-temperature phosphorescence detection of mercury ions†

Wan Yi Xie,a   Wei Tao Huang,a   Hong Qun Luo*a  and  Nian Bing Li*a  

* Corresponding authors

a Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P.R. China
E-mail: linb@swu.edu.cn, luohq@swu.edu.cn
Fax: +86-23-68253237
Tel: +86-23-68253237

Abstract

A new room-temperature phosphorescence (RTP) mercury ions sensor has been developed based on cetyltrimethylammonium bromide-capped Mn-doped ZnS quantum dots (CTAB/Mn-ZnS QDs) and label-free thymine (T)-rich aptamer. The formed T–Hg2+–T dsDNA can linearly quench the RTP of Mn-ZnS QDs through electron transfer and aggregation effect, and give a detection limit of 1.5 nM.

Graphical abstract: CTAB-capped Mn-doped ZnS quantum dots and label-free aptamer for room-temperature phosphorescence detection of mercury ions

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Article information

DOI
https://doi.org/10.1039/C2AN35777A
Article type
Communication
Submitted
10 Jun 2012
Accepted
13 Aug 2012
First published
15 Aug 2012

Analyst, 2012,137, 4651-4653

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CTAB-capped Mn-doped ZnS quantum dots and label-free aptamer for room-temperature phosphorescence detection of mercury ions

W. Y. Xie, W. T. Huang, H. Q. Luo and N. B. Li, Analyst, 2012, 137, 4651 DOI: 10.1039/C2AN35777A

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