INVESTIGADORES
FROIMOWICZ Pablo
artículos
Título:
Attachment of an aromatic dendritic macromolecule to gold surfaces
Autor/es:
JULIETA I PAEZ; PABLO FROIMOWICZ; ANA M BARUZZI; MIRIAM C STRUMIA; VERÓNICA BRUNETTI
Revista:
ELECTROCHEMISTRY COMMUNICATIONS
Editorial:
ELSEVIER SCIENCE INC
Referencias:
Lugar: Amsterdam; Año: 2008 p. 541 - 545
ISSN:
1388-2481
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.