info:eu-repo/semantics/article
Attachment of an aromatic dendritic macromolecule to gold surfaces
Fecha
2008-02Registro en:
Paez, Julieta Irene; Froimowicz, Pablo; Baruzzi, Ana Maria; Strumia, Miriam Cristina; Brunetti, Veronica; Attachment of an aromatic dendritic macromolecule to gold surfaces; Elsevier Science; Electrochemistry Communications; 10; 4; 2-2008; 541-545
1388-2481
CONICET Digital
CONICET
Autor
Paez, Julieta Irene
Froimowicz, Pablo
Baruzzi, Ana Maria
Strumia, Miriam Cristina
Brunetti, Veronica
Resumen
Surface immobilization of dendrons and dendrimers presents an exciting opportunity for creating a wide variety of functionalized polymeric architectures suitable for the immobilization of biomolecules. Dendritic molecules contain multifunctional groups that can be efficiently modified to control the properties of the resulting polymers. We are developing strategies to generate a highly functionalized surface using multifunctional and rigid dendrons immobilized onto different substrates. In this paper, electrochemical methods and scanning probe microscopy were used to explore the immobilization of a dendritic macromolecule (3,5-bis(3,5-dinitrobenzoylamino)benzoic acid) or (D-NO2) onto gold electrodes. D-NO2 adsorbs spontaneously by dipping the metal surface in dendron solution and also via grafting of cystamine covalent attached to gold electrode. Reduction of this layer generates the hydroxylamine product. The resulting redox-active layer exhibits a well-behaved redox response for the adsorbed nitroso/hydroxylamine couple.