Journal
ANALYST
Volume 139, Issue 11, Pages 2691-2694Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3an02164e
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Funding
- NSFC [21165023, 20865006]
- PCSIRT
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We utilized Cu2+ induced gold nanorod shortening in the presence of Na2S2O3 and NH3 for colorimetric sensing of copper ions. Compared with conventional methods, this method has good reproducibility, fast response time and very high sensitivity to Cu2+. The sensor has a large dynamic range for Cu2+ covering 5 nM to 500 mM with a detection limit of 1.6 nM, which is lower than previously reported for the colorimetric detection of copper ions.
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