Abstract
In this paper, we demonstrate a label-free ion-selective optical sensor for metal ion. This sensing mechanism is based on (1) selective formation of metal-ligand complex on the surface of nanoplasmonic probes and (2) selective plasmonic resonance energy transfer (PRET) between conjugated metal-ligand complex and gold nanoplasmonic probes (GNPs). We used functionalized GNP with ethylenediamine ligands in order to demonstrate high selectivity and sensitivity toward Cu2+. Due to the selective energy transfer from GNP to dd transition of the Cu2+ complex, the scattering spectrum of GNP changes quantitatively down to 1 nM of Cu2+.
| Original language | English |
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| Title of host publication | Proceedings of the 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007 |
| Editors | Jean-Louis Viovy, Patrick Tabeling, Stephanie Descroix, Laurent Malaquin |
| Publisher | Chemical and Biological Microsystems Society |
| Pages | 464-466 |
| Number of pages | 3 |
| ISBN (Electronic) | 9780979806407 |
| State | Published - 2007 |
| Event | 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007 - Paris, France Duration: 7 Oct 2007 → 11 Oct 2007 |
Publication series
| Name | Proceedings of the 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007 |
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Conference
| Conference | 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007 |
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| Country/Territory | France |
| City | Paris |
| Period | 7/10/07 → 11/10/07 |
Bibliographical note
Publisher Copyright:© 2007 CBMS.
Keywords
- Gold Nanoparticle
- Metal-Ligand Complex
- Plasmonic Resonance Energy Transfer
- Rayleigh Scattering