A biosensing application based on quenching the enhanced electrochemiluminescence of poly[tris(N-bipyridylethyl)pyrrole] ruthenium(II) film by Au nanoparticles.

A new stable solid-state electrochemiluminescence (ECL) sensor was fabricated by electropolymg. tris((4-(2-pyrrol-1-ylethyl))-4'-methyl-2,2'-bipyridine) ruthenium(II) complex (denoted as Ru(L)3) upon glassy carbon electrode (GCE). Meanwhile, 3.5-fold enhanced ECL intensity of polyRu(L)3/GCE was obtained in H2O/CH3CN solvent instead of H2O. An obvious ECL quenching was obsd. by introducing gold nanoparticles onto the polymer film. Atomic force microscope (AFM) was used to characterize the obtained polyRu(L)3 film and nanogold seeds/polyRu(L)3 film morphologies. The electrochem. and ECL behaviors were studied by cyclic voltammetry. Based on the efficient quenching, a new glucose ECL biosensor as a model was accomplished by in situ growing-up gold seeds in AuCl-4 soln. induced by biol. generated H2O2. The linear range to detect glucose is from 5.0 × 10-5 M to 2.0 × 10-3 M with the limit of detection of 2.5 × 10-5 M. [on SciFinder(R)]

Références

Titre
A biosensing application based on quenching the enhanced electrochemiluminescence of poly[tris(N-bipyridylethyl)pyrrole] ruthenium(II) film by Au nanoparticles.
Type de publication
Article de revue
Année de publication
2013
Revue
J. Electroanal. Chem.
Volume
692
Pagination
60–65
ISSN
1873-2569
Soumis le 12 avril 2018