Electrografting of Diazonium‐Functionalized Polyoxometalates: Synthesis, Immobilisation and Electron‐Transfer Characterisation from Glassy Carbon. Issue 41 (3rd September 2013)

• Record Type: Journal Article
• Authors: Rinfray, Corentin; Izzet, Guillaume; Pinson, Jean; Gam Derouich , Sarra; Ganem, Jean‐Jacques; Combellas, Catherine; Kanoufi, Frédéric; Proust, Anna
• Is Part Of: Chemistry. Volume 19:Issue 41(2013)
• Page Start: 13838
• Page End: 13846
• Publication Date: 2013-09-03
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201302304
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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(<italic>p</italic>‐C₆H₄‐CC‐C₆H₄‐<tex-math notation="tex"><![CDATA[${{\rm N}{{+\hfill \atop 2\hfill}}}$]]></tex-math><inline-graphic xlink:href="ark:/27927/pgg3j1pnsrp" mimetype="image" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />)}]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.</p> </abstract>