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Fluorescent silver nanoclusters for user-friendly detection of Cu2+ on a paper platform.
- Source :
-
The Analyst [Analyst] 2012 May 21; Vol. 137 (10), pp. 2406-14. Date of Electronic Publication: 2012 Apr 10. - Publication Year :
- 2012
-
Abstract
- The development of a user-friendly sensing platform for the detection of Cu(2+) in water is necessary as there are wide concerns due to the substantial impact of Cu(2+) on human health, environmental monitoring, and so on. Motivated by this, we report a fluorescent silver nanoclusters (AgNCs)-based sensor for the detection of Cu(2+). These water-soluble AgNCs, as a new class of fluorescent probes, were synthesized by using azobenzene modified poly(acrylic acid) (MPAA) as templates. Their fluorescence can be quenched in the presence of Cu(2+), which enables the label-free detection of Cu(2+) in real water samples. Furthermore, such AgNCs can be integrated onto cellulose filter paper and used as fluorescent indicators for Cu(2+). The fluorescence quenching can be observed by the naked eye under UV light. It should be noted that this AgNCs-based paper assay performs successfully in barrelled drinking water and river water samples. Therefore, it opens up new avenues to the development of robust clusters-based sensing platforms.
Details
- Language :
- English
- ISSN :
- 1364-5528
- Volume :
- 137
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- The Analyst
- Publication Type :
- Academic Journal
- Accession number :
- 22489282
- Full Text :
- https://doi.org/10.1039/c2an35051c