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mardi 25 avril 2017

Low-Molecular-Weight Hydrogels as New Supramolecular Materials for Bioelectrochemical Interfaces

D. Jain, A. Karajic, M. Murawska, B. Goudeau, S. Bichon, S. Gounel, N. Mano, A. Kuhn, P. Barthélémy

ACS Appl. Mater. Interfaces 2017, in press, DOI: 10.1021/acsami.6b12890

Controlling the interface between biological tissues and electrodes remains an important challenge for the development of implantable devices in terms of electroactivity, biocompatibility, and long-term stability. To engineer such a biocompatible interface a low molecular weight gel (LMWG) based on a glycosylated nucleoside fluorocarbon amphiphile (GNF) was employed for the first time to wrap gold electrodes via a noncovalent anchoring strategy, that is, self-assembly of GNF at the electrode surface. Scanning electron microscopy (SEM) studies indicate that the gold surface is coated with the GNF hydrogels. Electrochemical measurements using cyclic voltammetry (CV) clearly show that the electrode properties are not affected by the presence of the hydrogel. This coating layer of 1 to 2 μm does not significantly slow down the mass transport through the hydrogel. Voltammetry experiments with gel coated macroporous enzyme electrodes reveal that during continuous use their current is improved by 100% compared to the noncoated electrode. This demonstrates that the supramolecular hydrogel dramatically increases the stability of the bioelectrochemical interface. Therefore, such hybrid electrodes are promising candidates that will both offer the biocompatibility and stability needed for the development of more efficient biosensors and biofuel cells.

2017-02

 

Capillary-assisted bipolar electrochemistry: a focused minireview
lundi 13 mars 2017
L. Bouffier, N. Sojic, A. Kuhn Electrophoresis, 2017, in press A bipolar electrode is quite unconventional as it behaves simultaneously as an anode and a cathode in contrast to a classic... Read More...
Hierarchical templating in deposition of semi-covalently imprinted inverse opal polythiophene film for femtomolar determination of human serum albumin
lundi 13 mars 2017
M. Dabrowski⁠, M. Cieplak⁠a⁠, P. Sindhu Sharma⁠, P. Borowicz⁠, K. Noworyta⁠, W. Lisowski⁠, F. D'Souza⁠⁠, A. Kuhn⁠, W. Kutner Biosens.&Bioelectron. 2017, 94, 155-161... Read More...
Spatially-resolved multicolor bipolar electrochemiluminescence
lundi 6 février 2017
Haidong Li, Laurent Bouffier, Stéphane Arbault, Alexander Kuhn, Conor F. Hogan, Neso Sojic Electrochemistry Communications, 2017, in press Here, we describe a new aspect of multicolor... Read More...
Co(III) Complexes of (1,3-Selen-2-yl)hydrazones and Their Sulphur Analogues: Comparative Structural, Electrochemical, Computational and Biological Activity Study
lundi 6 février 2017
Nenad R. Filipović, Hana Elshaflu, Sonja Grubišić, Ljiljana S. Jovanović, Marko Rodić, Irena Novaković, Aleksandar Malešević, Ivana S. Djordjević, Haidong Li, Nešo Šojić, Aleksandar... Read More...
Efficient Annihilation Electrochemiluminescence of Cationic Helicene Luminophores
vendredi 3 février 2017
Haidong Li, Silvia Voci, Antoine Wallabregue, Catherine Adam, Geraldine M. Labrador, Romain Duwald, Irene Hernández Delgado, Simon Pascal, Johann... Read More...
Applications of Electrogenerated Chemiluminescence in Analytical Chemistry
mercredi 18 janvier 2017
N. Sojic, S. Arbault, L. Bouffier, A. Kuhn Luminescence in Electrochemistry. Applications in Analytical Chemistry, Physics and Biology. Eds. F. Miomandre, P. Audebert, 2017. Springer. The great... Read More...
Recent Advances in Bipolar Electrochemistry
jeudi 12 janvier 2017
L. Bouffier, D. Zigah, N. Sojic, A. Kuhn Electroanalytical Chemistry: A Series of Advances, Volume 27, eds. A.J. Bard, C.G. Zoski, 2017, CRC Press, Taylor&Francis Group, in press The concept of... Read More...
Low-Molecular-Weight Hydrogels as New Supramolecular Materials for Bioelectrochemical Interfaces
jeudi 12 janvier 2017
D. Jain, A. Karajic, M. Murawska, B. Goudeau, S. Bichon, S. Gounel, N. Mano, A. Kuhn, P. Barthélémy ACS Appl. Mater. Interfaces 2017, in press, DOI: 10.1021/acsami.6b12890 Controlling the...
Highly Ordered Macroporous Electrodes
jeudi 12 janvier 2017
A. Kuhn, M. Heim Springer Handbook of Electrochemical Energy, eds. C. Breitkopf, K. Swider-Lyons, Chapter 6 p143-206, Springer Verlag, Berlin 2017, ISBN:978-3-662-46656-8 In this book chapter, we... Read More...
Full-Spectral Multiplexing of Bioluminescence Resonance Energy Transfer in Three TRPV Channels
jeudi 12 janvier 2017
H. J. Ruigrok, G. Shahid, B. Goudeau, F. Poulletier de Gannes,E. Poque-Haro, A. Hurtier, I. Lagroye, P. Vacher, S. Arbault, N. Sojic, B. Veyret, Y. Percherancier Biophysical Journal, 2017, 112,... Read More...
Bright Electrochemiluminescence Tunable in the Near-Infrared of Chiral Cationic Helicene Chromophores
mercredi 11 janvier 2017
Haidong Li, Antoine Wallabregue, Catherine Adam, Geraldine M. Labrador, Johann Bosson, Laurent Bouffier, Jérôme Lacour, Neso Sojic J. Phys. Chem. C,... Read More...
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