Département de chimie moléculaire

An original versatile methodol. for mol. grafting on different surfaces via the photoinduced formation of a covalent bond based on a diazirine group is reported. The synthesis and electrochem. behavior of a new diazirine deriv. which acts as a mol. linking bridge bearing both a photoactivatable covalent binding group (diazirine) and a non-covalent binding group (pyrene) is described. The resulting pyrene-diazirine was electropolymd. onto a platinum electrode and under UV irradn. was successfully used to graft ferrocenemethanol and glucose oxidase (model small mol. and protein, resp.), conferring specific properties on the resulting materials. Furthermore, the immobilization of the diazirine deriv. onto multi-walled carbon nanotubes (MWCNT) by $π$-stacking interaction or by electropolymn. onto both bare and MWCNT-coated platinum electrodes enabled photografting of glucose oxidase. [on SciFinder(R)]