title: Co-reactant-on-Demand ECL: Electrogenerated Chemiluminescence by the in Situ Production of S2O82-at Boron-Doped Diamond Electrodes.
abstract: A novel co-reactant-free electrogenerated chemiluminescence (ECL) system is developed where Ru(bpy)32+emission is obtained on boron-doped diamond (BDD) electrodes. The method exploits the unique ability of BDD to operate at very high oxidation potential in aqueous solutions and to promote the conversion of inert SO42-into the reactive co-reactant S2O82-. This novel procedure is rather straightforward, not requiring any particular electrode geometry, and since the co-reactant is only generated in situ, the interference with biological samples is minimized. The underlying mechanism is similar to that of the Ru(bpy)32+/S2O82-system; however, the intensity of the emitted signal increases linearly with [SO42-] up to ∼0.6 M, with possible implications for analytical uses of the proposed procedure.
authors.affiliation: Department of Chemistry, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
authors.lastname: Irkham
authors.affiliation: Department of Chemistry, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Watanabe
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna , Via Selmi, 2, 40126 Bologna, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fiorani
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna , Via Selmi, 2, 40126 Bologna, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Valenti
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna , Via Selmi, 2, 40126 Bologna, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Paolucci
authors.affiliation: Department of Chemistry, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.|JST-ACCEL , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Einaga