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Título: | Plasmon-based nanolenses assembled on a well-defined DNA template |
Autor: | Bidault, S.; García de Abajo, Francisco Javier; Polman, A. | Fecha de publicación: | 2008 | Editor: | American Chemical Society | Citación: | Journal of the American Chemical Society 130: 2750- 2751 (2008) | Resumen: | The controlled and reproducible synthesis of closely spaced noble metal nanoparticle groupings is an essential step toward the rational design of nanostructures for surface enhanced Raman scattering with single-molecule sensitivity. In this communication, we demonstrate the facile synthesis of 5, 8, and 18 nm gold particle groupings on a well-defined DNA template by hybridizing monoconjugated gold-DNA building blocks. The obtained nanometer interparticle gaps should yield local intensity enhancements up to 4 orders of magnitude as estimated by Generalized Mie Theory. By tuning the particle size and relative curvatures, we calculate that the maximum enhancement can be optimized and localized on a specific part of the nanostructure. These groupings act as plasmon-based nanolenses assembled on a biomolecular backbone that can be functionalized in proximity to the region of highest field. Copyright © 2008 American Chemical Society. | URI: | http://hdl.handle.net/10261/86890 | DOI: | 10.1021/ja711074n | Identificadores: | doi: 10.1021/ja711074n issn: 0002-7863 |
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