Pyrene functionalised single-walled carbon nanotubes for bioelectrocatalysis
|Martin Jönsson-Niedziółka , Marcin Opallo|
Polish Academy of Sciences, Institute of Physical Chemistry, Kasprzaka 44/52, Warszawa 01-224, Poland
Recently it was shown that single-walled carbon nanotubes(SWCNTs) is a suitable support for non-mediated bioelectrocatalytic dioxygen reduction using the enzyme laccase. Further, it was revealed that the use of SWCNTs non-covalently functionalised with pyrene sulfonic acid through π-electron stacking significantly enhances the catalytic activity of the electrode.  However, the mechanism behind this enhancement is still not elusidated. Since similarly high catalytic currents were measured using electrodes modified with sulfonated carbon nanoparticles , as well as with nafion on multi-walled carbon nanotubes  it is suspected that the sulphor groups might be significant for the process.
Presentation: Short communication at SMCBS'2009 International Workshop, by Martin Jönsson-Niedziółka
See On-line Journal of SMCBS'2009 International Workshop
Submitted: 2009-09-11 12:42 Revised: 2009-09-11 12:42