A comparative study on the immobilization of organic-inorganic polyoxometalates hybrids onto gold electrodes: Direct versus indirect, covalent versus electrostatic grafting
Abstract
We explored the conditions of the covalent grafting of organic-inorganic polyoxometalate hybrids onto gold using two basic reactions: the peptide-type coupling between a functionalized POM and a preformed organic self-assembled monolayer and the direct attachment of a thiol-terminated POM. We aimed at demonstrating that the variability of the POM loading is an inherent parameter of chemical reactions carried out under heterogeneous conditions that should be systematically assessed. Mitigation measures include a careful preparation and characterization of the substrates at every step before the final POM anchoring. Moreover, a very fast electron transfer across a gold microelectrode and a POM layer was achieved in the case of a very short tether.
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BibTeX
@article{laurans2026comparative,
title = {{A comparative study on the immobilization of organic-inorganic polyoxometalates hybrids onto gold electrodes: Direct versus indirect, covalent versus electrostatic grafting}},
author = {Maxime Laurans and Kevin Dalla Francesca and Laure Fillaud and Emmanuel Maisonhaute and Richard Villanneau and Vincent Humblot and Guillaume Izzet and Florence Volatron and Anna Proust},
journal = {Polyoxometalates},
year = {2026},
month = oct,
doi = {10.26599/pom.2026.9140167},
url = {https://hal.sorbonne-universite.fr/hal-05840316v1},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - A comparative study on the immobilization of organic-inorganic polyoxometalates hybrids onto gold electrodes: Direct versus indirect, covalent versus electrostatic grafting
AU - Maxime Laurans
AU - Kevin Dalla Francesca
AU - Laure Fillaud
AU - Emmanuel Maisonhaute
AU - Richard Villanneau
AU - Vincent Humblot
AU - Guillaume Izzet
AU - Florence Volatron
AU - Anna Proust
PY - 2026
DA - 2026/10/16
JO - Polyoxometalates
DO - 10.26599/pom.2026.9140167
UR - https://hal.sorbonne-universite.fr/hal-05840316v1
AB - We explored the conditions of the covalent grafting of organic-inorganic polyoxometalate hybrids onto gold using two basic reactions: the peptide-type coupling between a functionalized POM and a preformed organic self-assembled monolayer and the direct attachment of a thiol-terminated POM. We aimed at demonstrating that the variability of the POM loading is an inherent parameter of chemical reactions carried out under heterogeneous conditions that should be systematically assessed. Mitigation measures include a careful preparation and characterization of the substrates at every step before the final POM anchoring. Moreover, a very fast electron transfer across a gold microelectrode and a POM layer was achieved in the case of a very short tether.
SN - 2957-9821
SN - 2957-9503
ER -