Detection of        mercury(II) based on Hg2+–DNA complexes inducing the aggregation of gold nanoparticles

Chi-Wei Liu; Yi-Ting Hsieh; Chih-Ching Huang; Zong-Hong Lin; Huan-Tsung Chang

doi:10.1039/B719856F

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Detection of mercury(ii) based on Hg²⁺–DNA complexes inducing the aggregation of gold nanoparticles†

Chi-Wei Liu,^a Yi-Ting Hsieh,^b Chih-Ching Huang,^a Zong-Hong Lin^a and Huan-Tsung Chang*^a

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* Corresponding authors

^a Department of Chemistry, National Taiwan University, Taipei, Taiwan
E-mail: changht@ntu.edu.tw
Fax: +011-886-2-33661171
Tel: +011-886-2-33661171

^b Department of Natural Science Education, National Taitung University, Taitung, Taiwan

Abstract

A DNA–Au NP probe for sensing Hg²⁺ using the formation of DNA–Hg²⁺ complexes through thymidine (T)–Hg²⁺–T coordination to control the negative charge density of the DNA strands—thereby varying their structures—adsorbed onto Au NPs.

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Supplementary files

Experimental procedures on prepared compounds and Fig. S1–S4 PDF (527K)

Article information

DOI: https://doi.org/10.1039/B719856F
Article type: Communication
Submitted: 02 Jan 2008
Accepted: 12 Feb 2008
First published: 10 Mar 2008

Download Citation

Chem. Commun., 2008, 2242-2244

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Detection of mercury(II) based on Hg²⁺–DNA complexes inducing the aggregation of gold nanoparticles

C. Liu, Y. Hsieh, C. Huang, Z. Lin and H. Chang, Chem. Commun., 2008, 2242 DOI: 10.1039/B719856F

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