The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Gold Nanoparticle-Based Sensing of “Spectroscopically Silent” Heavy Metal Ions
Abstract
A simple colorimetric technique for the detection of small concentrations of aqueous heavy metal ions, including toxic metals such as lead, cadmium, and mercury, is described. Functionalized gold nanoparticles are aggregated in solution in the presence of divalent metal ions by an ion-templated chelation process; this causes an easily measurable change in the absorption spectrum of the particles. The aggregation also enhances the hyper-Rayleigh scattering (HRS) response from the nanoparticle solutions, providing an inherently more sensitive method of detection. The chelation/aggregation process is reversible via addition of a strong metal ion chelator such as EDTA. Suggestions for improving the sensitivity and selectivity of the technique are given.
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Cites
Quantum Dot Bioconjugates for Ultrasensitive Nonisotopic Detection
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Organization of 'nanocrystal molecules' using DNA
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Metal Nanoparticles: Synthesis, Characterization, and Applications
Fedlheim, D. L., & Foss, C. A. (2001) · Cited by 953
Electrodynamics of Noble Metal Nanoparticles and Nanoparticle Clusters
Jensen, T., Kelly, L., Lazarides, A., & Schatz, G. C. (1999) · Journal of Cluster Science · doi:10.1023/a:1021977613319 · Cited by 568
DNA-Linked Metal Nanosphere Materials: Structural Basis for the Optical Properties
Lazarides, A. A., & Schatz, G. C. (2000) · The Journal of Physical Chemistry B · doi:10.1021/jp992179+ · Cited by 309
Optical properties of aggregates of small metal particles
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Cited by
Daniel, M.-C., & Astruc, D. (2004) · Chemical Reviews · doi:10.1021/cr030698+ · Cited by 12,446
Gold Nanoparticles in Chemical and Biological Sensing
Saha, K., Agasti, S. S., Kim, C., Li, X., & Rotello, V. M. (2012) · Chemical Reviews · doi:10.1021/cr2001178 · Cited by 4,620
Nanostructures in Biodiagnostics
Rosi, N. L., & Mirkin, C. A. (2005) · Chemical Reviews · doi:10.1021/cr030067f · Cited by 4,603
Exploitation of Localized Surface Plasmon Resonance
Hutter, E., & Fendler, J. H. (2004) · Advanced Materials · doi:10.1002/adma.200400271 · Cited by 2,726
Optical Properties and Ultrafast Dynamics of Metallic Nanocrystals
Link, S., & El-Sayed, M. A. (2003) · Annual Review of Physical Chemistry · doi:10.1146/annurev.physchem.54.011002.103759 · Cited by 1,444
Metadata
- Authors
- Kim, Y., Johnson, R. C., & Hupp, J. T.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-03-09
- Volume
- 1
- Issue
- 4
- Pages
- 165-167
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2014774010
- Cited by
- 907
- References
- 9
- FWCI
- 11.47
- Type
- journal article
- Language
- en
- Open access
- closed
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