Département de chimie moléculaire

A new approach for the fabrication of homogeneous single-walled carbon nanotube/polypyrrole composites is presented. Stable SWCNT dispersions were obtained using the electropolymerizable (11-pyrrolyl-1-ylundecyl)triethylammonium tetrafluoroborate as surfactant. For these dispersions, the authors used com. available HiPco SWCNTs (purified) as received without any further treatment. Highly homogeneous composite materials could be electrogenerated, which were analyzed by SEM showing thin SWCNT bundles embedded in the polymer matrix. The quality of the SWCNT composite was tested with regard to its performance for biosensor applications. Enzymes like glucose oxidase and tyrosinase were entrapped in this copolymer during electropolymn. The resulting glucose and catechol biosensors exhibit a drastic increase of sensitivities and max. currents compared with the same sensor setup without nanotubes. [on SciFinder(R)]