Preparation and characterization of SERS-active substrates: a study of the crystal violet adsorption on silver nanoparticles

Química Nova

El Haber, Fady¹  Corio, Paola¹  Louarn, Guy¹  Institut des Matériaux Jean Rouxel, França¹  Universidade Estadual de Londrina, Londrina¹  Santana, Henrique de¹  Universidade de São Paulo, São Paulo¹  Zaia, Dimas A. M.¹ 

关键词: silver sol;    crystal violet;    surface enhanced resonance Raman spectroscopy (SERRS).;   

DOI  :  10.1590/S0100-40422006000200003

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown