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Khanafer, M., Izquierdo-Lorenzo, I., Akil, S., Louarn, G., Toufaily, J., Hamieh, T., Adam, P.-M. & Jradi, S. (2016) Silver Nanoparticle Rings of Controllable Size: Multi-Wavelength SERS Response and High Enhancement of Three Pyridine Derivatives. ChemistrySelect, 1 1201–1206.
Added by: Richard Baschera (2017-04-03 14:22:58) Last edited by: Richard Baschera (2017-04-03 14:24:38) |
| Type de référence: Article DOI: 10.1002/slct.201600035 Numéro d'identification (ISBN etc.): 2365-6549 Clé BibTeX: Khanafer2016 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, PMN Mots-clés: bipyridine, polymer self-assembly, self-organization of nanoparticles, sers, silver nanoparticles Créateurs: Adam, Akil, Hamieh, Izquierdo-Lorenzo, Jradi, Khanafer, Louarn, Toufaily Collection: ChemistrySelect |
Consultations : 1/501
Indice de consultation : 4% Indice de popularité : 1% |
| Liens URLs http://onlinelibra ... 201600035/abstract |
| Résumé |
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The preparation method of nanoporous poly(methyl methacrylate)(PMMA) containing silver nanoparticles self-organized in rings is highly adaptable, yielding a variety of materials of controllable pore size (ranging from 200 nm to over 5 µm), nanoparticle size (20 to 200 nm), surface coverage and silver precursor concentration. In this article, it is optimized aiming at a best performance as enhancers for Surface Enhanced Raman Spectroscopy. The versatility of these sensors is shown by a multi-wavelength excitation experiment at 457, 488, 514 and 633 nm. Finally, the efficiency of 2,2’-bipyridine, 4,4’-bipyridine and trans-bis-(4,4’-bipyridyl)ethylene as SERS probe molecules is compared using PMMA/Ag-rings. Ag+ ions are shown to play an important role in the adsorption of the target molecules on these surfaces leading to a SERS enhancement factor of 3.78×108 at 488 nm for trans-bis-(4,4’-bipyridyl)ethylene.
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