Département de chimie moléculaire

The authors report the synthesis and suitability of tris[4,4-bis(4-pyren-1-ylbutyloxy)bipyridinyl]iron(II) hexafluorophosphate complex contg. six pyrene groups; this complex allows for both the efficient functionalization of multiwalled carbon nanotubes (MWCNTs) and the immobilization of $\beta$-cyclodextrin-tagged glucose oxidase (GOx) via supramol. interactions between pyrene and $\beta$-cyclodextrin. The octahedral geometry of the complex makes pyrene groups available for concomitant $π$-stacking interaction with CNTs and formation of the supramol. pyrene/$\beta$-cyclodextrin link for the immobilization of GOx. This represents a straightforward and convenient method for immobilizing a large amt. of enzymes on nanotube-modified electrodes. Since 1-alkyl functionalized pyrenes can also be electropolymd., both the Pt and the MWCNT electrodes were modified by the electrogenerated poly[tris(pyrene-bipyridine)]iron(II) film. All electrodes were characterized and their amperometric response was compared. [on SciFinder(R)]