Electrogenerated Chemiluminescence of Tris(dibenzoylmethane)phenanthroline Europium(III) as a Light Source: An Application for the Detection of PO43-Based on the Ion Associate Formation of Phosphomolybdic Acid and Malachite Green

Abstract

We demonstrate that electorogenerated chemiluminescence (ECL) of an organometallic Eu(III) complex, tris(dibenzoylmethane)phenanthroline europium(III), whose emission spectra is very sharp with the maximum wavelength of 612 nm, can be used as a light source for the detection of PO4 3based on changing the absorbance of the ion associate of malachite green (MG +) and phosphomolybdic acid. The ECL was also applied to measure the absorbance of MG +. With the detection system we established, absorbance up to ∼1.6 with a change of ∼0.1 could be detected.

Electrochemiluminescence Sensing

“…3,4 Ishimatsu et al developed various organometallic complexes of europium(III), 5 such as tris(dibenzoylmethane)phenanthroline europium(III), whose full width at half maximum of the main emission (612 nm) was 6 nm. 6 Moreover, various nanomaterials such as carbon nanotubes (CNTs), 7 gold nanoclusters, 8 and silver nanoparticles, 9 were provided to amplify the ECL signal for the highly sensitive detection of a low-abundance analyte. Shan et al provided graphite carbon nitride (g-C3N4)/mesoporous silica hollow spheres (SiO2) as a modified glassy carbon electrode for the detection of reduced glutathione (GSH).…”