Fabrication of polypyrrole-based nanoelectrode arrays by colloidal lithography.
This paper describes a novel technique to produce polypyrrole-based nanoelectrodes for electrochemical detection purpose. The fabrication process relies on the creation of patterned nanotemplates i.e., nanometric gold spots surrounded by an electrically insulating material (SiO(x)). From these templates, polypyrrole nanopillars are grown by classical electrochemical methods. Atomic force microscopy demonstrates that polypyrrole grows selectively inside the gold nanotemplates. The electrochemical characterization by cyclic voltammetry showed a sigmoidal-shaped voltammogram characterizing the typical nanoelectrode array behavior.
Valsesia
Andrea
A
European Commission, Joint Research Center, Institute for Health and Consumer Protection, Via E.Fermi, 1 TP203, 21020 Ispra, Varese, Italy.
Lisboa
Patrícia
P
Colpo
Pascal
P
Rossi
François
F
D003102:Colloids; D004566:Electrodes; D018625:Microscopy, Atomic Force; D036103:Nanotechnology; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*
D003102:Colloids; D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole