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. 2010 Mar 8;6(5):623-6.
doi: 10.1002/smll.200901691.

Colorimetric Cu(2+) detection using DNA-modified gold-nanoparticle aggregates as probes and click chemistry

Xiaoyang Xu  1 , Weston L Daniel, Wei Wei, Chad A Mirkin
Affiliations

Colorimetric Cu(2+) detection using DNA-modified gold-nanoparticle aggregates as probes and click chemistry

Xiaoyang Xu et al. Small. .
No abstract available

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Figures

Figure 1
Figure 1
Normalized melting curves of the aggregates in the presence of Cu2+ concentrations ranging from 0 μM to 500 μM. The change in the extinction was monitored at 525 nm.
Figure 2
Figure 2
Normalized melting curves of the aggregates in the presence of 200 μM of various metal ions. The change in extinction was monitored at 525 nm.
Figure 3
Figure 3
A photograph of the DNA Au NPs at 55 °C in the presence of different metal ions after ligation.
Scheme 1
Scheme 1
Schematic illustration representing the aggregation and dissociation of the gold nanoparticle probes used in the colorimetric detection of copper ions.
See this image and copyright information in PMC

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