Efficient direct oxygen reduction by laccases attached and oriented on pyrene-functionalized polypyrrole/carbon nanotube electrodes.

We report the functionalization of multi-walled carbon nanotube (MWCNT) electrodes by oxidative electropolymn. of pyrrole monomers bearing pyrene and N-hydroxysuccinimide groups. Both polymers were applied to the immobilization and elec. wiring of Trametes versicolor laccase via chem. grafting or non-covalent binding. A "pseudo" host-guest interaction of polymd. pyrene with a hydrophobic cavity of laccase was used for the oriented enzyme immobilization on MWCNT electrodes. The latter leads to higher catalytic current for oxygen redn. (1.85 mA cm-2) and higher electroenzymic stability (50{%} after one month). [on SciFinder(R)]

Références

Titre
Efficient direct oxygen reduction by laccases attached and oriented on pyrene-functionalized polypyrrole/carbon nanotube electrodes.
Type de publication
Article de revue
Année de publication
2013
Revue
Chem. Commun. (Cambridge, United Kingdom)
Volume
49
Pagination
9281–9283
ISSN
1359-7345
Soumis le 12 avril 2018