Artículos de revistas
Preparation, characterization and application of modified surfaces with 3,5-Bis (3,5-dinitrobenzoyl-amino) benzoic acid
Fecha
2010-04Registro en:
Paez, Julieta Irene; Capelletti, Ariel L.; Baruzzi, Ana Maria; Brunetti, Veronica; Strumia, Miriam Cristina; Preparation, characterization and application of modified surfaces with 3,5-Bis (3,5-dinitrobenzoyl-amino) benzoic acid; Wiley; Macromolecular Symposia; 290; 1; 4-2010; 37-45
1022-1360
Autor
Paez, Julieta Irene
Capelletti, Ariel L.
Baruzzi, Ana Maria
Brunetti, Veronica
Strumia, Miriam Cristina
Resumen
The spontaneous adsorption of the dendron 3,5-Bis (3,5-dinitrobenzoylamino) benzoic acid (D-NO2) onto gold and carbon electrodes produced conductive surfaces with electroactive chemical functions. A comparative electrochemical behavior of both electrodes after dendron immobilization led us to conclude that the self-assembly of D-NO2 on carbon is faster and stronger. Considering this advantage, the surface of magnetic maghemite nanoparticles (MNPs) was modified using D-NO2. Firstly, MNPs were modified with APS as silane coupling agent and afterwards, D-NO2 was covalently attached to the surface, achieving nitro-functionalized MNPs. Subsequently, the immobilization of these modified MNPs onto glassy carbon surfaces was explored to generate a novel platform promising for biosensors development.