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Issue 81, 2013
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Efficient direct oxygen reduction by laccases attached and oriented on pyrene-functionalized polypyrrole/carbon nanotube electrodes

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Abstract

We report the functionalization of multi-walled carbon nanotube (MWCNT) electrodes by oxidative electropolymerization of pyrrole monomers bearing pyrene and N-hydroxysuccinimide groups. Both polymers were applied to the immobilization and electrical wiring of Trametes versicolor laccase via chemical grafting or non-covalent binding. A “pseudo” host–guest interaction of polymerized 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 reduction (1.85 mA cm−2) and higher electroenzymatic stability (50% after one month).

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

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Article information


Submitted
03 Jul 2013
Accepted
08 Aug 2013
First published
08 Aug 2013

Chem. Commun., 2013,49, 9281-9283
Article type
Communication

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

N. Lalaoui, K. Elouarzaki, A. L. Goff, M. Holzinger and S. Cosnier, Chem. Commun., 2013, 49, 9281
DOI: 10.1039/C3CC44994G

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