Electrografting of Diazonium-Functionalized Polyoxometalates: Synthesis, Immobilisation and Electron-Transfer Characterisation from Glassy Carbon

Abstract : Polyoxometalates (POMs) are attractive candidates for the rational design of multi-level charge-storage materials because they display reversible multi-step reduction processes in a narrow range of potentials. The functionalization of POMs allows for their integration in hybrid complementary metal oxide semiconductor (CMOS)/molecular devices, provided that fine control of their immobilisation on various substrates can be achieved. Owing to the wide applicability of the diazonium route to surface modification, a functionalized Keggin-type POM [PW11O39\Ge(p-C6H4-C C-C6H4-N-2(+))\](3-) bearing a pending diazonium group was prepared and subsequently covalently anchored onto a glassy carbon electrode. Electron transfer with the immobilised POM was thoroughly investigated and compared to that of the free POM in solution.
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Chemistry - A European Journal, Wiley-VCH Verlag, 2013, 19 (41), pp.13838-13846. 〈10.1002/chem.201302304〉
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Corentin Rinfray, Guillaume Izzet, Jean Pinson, Sarra Gam Derouich, Jean-Jacques Ganem, et al.. Electrografting of Diazonium-Functionalized Polyoxometalates: Synthesis, Immobilisation and Electron-Transfer Characterisation from Glassy Carbon. Chemistry - A European Journal, Wiley-VCH Verlag, 2013, 19 (41), pp.13838-13846. 〈10.1002/chem.201302304〉. 〈hal-01237471〉

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