Electrochemistry of Biosystems
Linking Glucose Oxidation to Luminol-based Electrochemiluminescence using bipolar Electrochemistry
Asymmetric Modification of TiO2 Nanofibers with Gold by Electric-Field-Assisted Photochemistry
Stimuli-responsive microgels for electrochemiluminescence amplification

Bouffier L., Lister K. E., Higgins S. J., Nichols R. J., Doneux T.,
J. Electroanal. Chem. 2012, 664, 80-87.

The electrochemistry of proton coupled electron transfer phenomena is an important contemporary topic in molecular and interfacial electrochemistry, due to its significance in important organic and bioelectrochemical processes. We report here on the synthesis, self-assembly and electrochemical characterisation of amino-naphthoquinones derivatives on gold electrodes, which provide strong test-beds for such electrochemical processes. Voltammetric analysis of these systems and comparisons between buffered and unbuffered solutions give insights in the electrochemistry of the proton coupled electron transfer phenomenon. The solution electrochemistry of three of these derivatives is analysed with respect to the different side groups on the amino moiety, while the fourth derivative can be self-assembled on the gold electrode through a thiol attachment. The latter enables a Laviron analysis and quantification of the apparent electron transfer rate constant ks ≈ 2 × 102 s−1, this value being barely affected by the buffering conditions. However, switching from buffered to non-buffered solution markedly changed the voltammetric features of the redox active monolayer. While only one cathodic peak and one anodic peak were recorded in phosphate buffer solutions, one or two anodic peaks were observed in KClO4 depending on the scan rate, in very good agreement with recent theoretical works.

 

JElectroanalChem2012 p80 TOC

Potential Induced Fine-tuning the Enantioaffinity of Chiral Metal Phases


Sunday, 16 December 2018
S. Assavapanumat, T. Yutthalekha, P. Garrigue, B. Goudeau, V. Lapeyre, A. Perro, N. Sojic, C. Wattanakit, A. Kuhn Angew. Chem. Int. Ed. (2018) in press Concepts leading to single enantiomers of chiral molecules are of crucial importance for many... Read More...

Surface-confined Electrochemiluminescence Microscopy of Cell Membranes


Wednesday, 14 November 2018
S. Voci, B. Goudeau, G. Valenti, A. Lesch, M. Jović, S. Rapino, F. Paolucci, S. Arbault, N. Sojic J. Am. Chem. Soc., 140, 2018, 14753-14760 Herein is reported a surface-confined microscopy based on electrochemiluminescence (ECL) that allows to... Read More...

Enhanced Annihilation Electrochemiluminescence by Nanofluidic Confinement


Wednesday, 14 November 2018
Hanan Al-Kutubi, Silvia Voci, Liza Rassaei, Neso Sojic, Klaus Mathwig Chem .Sci., 9, 2018, (2018 Chemical Science HOT Article Collection) Microfabricated nanofluidic electrochemical devices offer a highly controlled nanochannel geometry; they... Read More...