Preparation and characterization of SERS-active substrates: a study of the crystal violet adsorption on silver nanoparticles
| Autor: | Guy Louarn, Dimas A. M. Zaia, Fady El Haber, Henrique de Santana, Paola Corio |
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| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 29, Iss 2, Pp 194-199 (2006) Química Nova, Volume: 29, Issue: 2, Pages: 194-199, Published: APR 2006 Química Nova v.29 n.2 2006 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| ISSN: | 1678-7064 0100-4042 |
| Popis: | The structural characterization of molecules used in the sterilization of blood for transfusions, such as crystal violet (CV), is relevant for understanding the action of these prophylactic drugs. The characterization is feasible by surface enhanced resonance Raman spectroscopy (SERRS) of CV in solution or on surfaces. The limit of detection of CV by SERRS, in the presence of colloidal particles, using 514.5 nm as excitation radiation, was found to be around 1 ppb. The characterization of CV was also made by SERS, by using different active-particles-containing substrates, proving the versatility of this technique for the study of such structures. The results suggest that the controlled production of highly efficient SERS-active substrates may allow qualitative and quantitative analysis, with high sensitivity, with potential applications in medical and environmental fields. |
| Databáze: | OpenAIRE |
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