Preparação e caracterização de substratos SERS ativos: um estudo da adsorção do cristal violeta sobre nanopartículas de prata

Química Nova

Henrique De Santana²  Dimas A. M. Zaia²  Paola Corio¹  Fady El Haber¹  Guy Louarn¹ 

[1] ,Universidade Estadual de Londrina Departamento de Química Londrina PR

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

DOI  :  10.1590/S0100-40422006000200003

来源: SciELO

【 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】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License