Abstract

The reversibility of redox processes is an important function for sensing and molecular electronic devices such as pH reporters or molecular switches. Here we report the electrochemical behaviour and redox reversibility of para-aminothiolphenol (PATP) after different polymerisation methods. We used electrochemical and photo-polymerisation in neutral buffers and plasma polymerisation in air to induce reversible redox states. The chemical stoichiometry and surface coverage of PATP in the polymerized layers were characterized by X-ray photoelectron spectroscopy (XPS), while cyclic voltammetry (CV) was used to measure the charge transfer, double layer capacitance and electrochemical rate of the layers during successive potential cycles. Our results show that the surface coverage of the redox active species is higher on electro-polymerised samples, however, after consecutive cycles all the methods converge to the same charge transfer, while the plasma polymerised samples achieve higher efficiency per molecule and UV polymerised samples have a higher electron transfer rate.

Details

Title
Influence of polymerisation on the reversibility of low-energy proton exchange reactions by Para-Aminothiolphenol
Author
Balakrishnan, Divya 1 ; Lamblin, Guillaume 2 ; Thomann, Jean Sebastien 2 ; Guillot, Jerome 2 ; Duday, David 2 ; van den Berg, Albert 3 ; Olthuis, Wouter 3 ; Pascual-García, César 2 

 Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, Belvaux, Luxembourg; BIOS-Lab on a chip group, MESA+ Institute of Nanotechnology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands 
 Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, Belvaux, Luxembourg 
 BIOS-Lab on a chip group, MESA+ Institute of Nanotechnology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands 
Pages
1-11
Publication year
2017
Publication date
Nov 2017
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
1963432777
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.