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. [1] However, the mechanism behind this enhancement is still not elusidated. Since similarly high catalytic currents were measured using electrodes modified with sulfonated carbon nanoparticles [2], as well as with nafion on multi-walled carbon nanotubes [3] it is suspected that the sulphor groups might be significant for the process.

In this communication we have investigated the electrocatalytic effect of SWCNT-supported laccase, where the SWCNTs have been functionalised with different pyrene compounds. The results are discussed in the light of trying to reveal important parameters for the direct electron transfer.

This research was partially supported by the European Union within the European Regional Development Fund, through Grant Innovative Economy (POIG.01.01.02-00-008/08).

[1]    M. Jönsson-Niedziolka et al., Electrochem. Commun. 11, 1042 (2009).
[2]    K. Szot et al., Electrochim. Acta 54, 4620 (2009).
[3]    K. Stolarczyk et al., Electrochim. Acta 53, 3983 (2008).

Legal notice
  • Legal notice:

    Copyright (c) Pielaszek Research, all rights reserved.
    The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
    In every case, proper references including Author(s) name(s) and URL of this webpage: must be provided.


Related papers
  1. BIOPHOSENS: Carbon nanomaterials based electrochemical biosensor for detection of highly toxic organophosphate pesticides
  2. Titanium dioxide nanotube and enzyme-enhanced photo-bio-fuel cell
  3. Ascorbic acid-oxygen biofuel cell and  zinc-oxygen cell based on carbon-silicate biocathode
  4. One-step electrodeposition of carbon–silicate sponge assisted by a three-phase junction for efficient bioelectrocatalysis
  5. A role of phosphonium-phosphate ionic liquid in anion-sensing mechanism at toluene-modified electrode
  6. One-step reduction and functionalization of graphene oxide sheets using biomimetic dopamine derivatives
  7. Bioelectrocatalytic electrode obtained by layer-by-layer assembling of sol-gel processed ionic liquid and hydrophilic carbon nanoparticles and adsorbed bilirubine oxidase
  8. Multistep electroreduction of fullerene C60 in 1,2-dichlorobenzene-water biphasic system
  9. A facile preparation of the nanoparticulate film from conductive and nonconductive particles of the opposite charge
  10. Bilirubin oxidase modified carbon ceramic electrode for bioelectrocatalytic reduction of dioxygen supplied from gas phase
  11. Bioelectrocatalytic dioxygen reduction at carbon nanotubes – silicate composite film modified electrode
  12. Driving ion transfer across the toluene (trihexyl(tetradecyl)-phosphonium tris(pentafluoroethyl)trifluoro-phosphate) | water (electrolyte) interface with the MnTPP(III/II) redox system
  13. Covalently bonded ionic liquid modified electrodes
  14. Scanning electrochemical microscopy study of laccase embedded in sol-gel processed silicate film
  15. Room temperature ionic liquid based carbon paste electrode
  16. Biphasic electrochemistry of ionic liquids deposited on the electrode surface
  17. Ion transfer electrodes based on carbon nanofibers embedded in silicate film modified with room temperature ionic liquid
  18. Nanoobjects embedded in silicate films for biphasic electrodes
  19. Electrocatalytic reduction of dioxygen by redox mediator and laccase immobilised in silicate thin film
  20. Silicate Modified Electrodes for Chemical Sensing
  21. Carbon Ceramic Electrode Modified with Redox Probe Solution in Hydrophobic Polar Solvents

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
© 1998-2021 pielaszek research, all rights reserved Powered by the Conference Engine