Artículos de revistas
Single-Wall Carbon Nanotubes Covalently Functionalized with Polylysine: Synthesis, Characterization and Analytical Applications for the Development of Electrochemical (Bio)Sensors
Fecha
2014-05Registro en:
Pedano, Maria Laura; Rivas, Gustavo Adolfo; Hernández Ferrer, Javier; Ansón Casaos, Alejandro; González Domínguez, José Miguel; Gasnier, Aurelien; et al.; Single-Wall Carbon Nanotubes Covalently Functionalized with Polylysine: Synthesis, Characterization and Analytical Applications for the Development of Electrochemical (Bio)Sensors; Wiley VCH Verlag; Electroanalysis; 26; 8; 5-2014; 1676-1683
1040-0397
CONICET Digital
CONICET
Autor
Gasnier, Aurelien
González Domínguez, José Miguel
Ansón Casaos, Alejandro
Hernández Ferrer, Javier
Pedano, Maria Laura
Rubianes, María Dolores
Martinez, Maria Teresa
Rivas, Gustavo Adolfo
Resumen
This work reports the synthesis of single-wall carbon nanotubes (SWCNT) covalently functionalized with polylysine (Plys) and the analytical performance of glassy carbon electrodes (GCE) modified with this material (GCE/SWCNT-Plys). The resulting electrodes showed an important decrease in the overvoltages for the oxidation of ascorbic acid, uric acid and hydrogen peroxide as well as for the reduction of hydrogen peroxide. The favorable interaction of glucose oxidase (GOx) with SWCNT-Plys allowed the sensitive and selective glucose biosensing at −0.100 V without any permselective membrane. The proposed sensor was challenged with different real samples without pretreatment showing an excellent correlation with the reported values.