Effects of poly(ethylene glycol) tert-octylphenyl ether on tris(2-phenylpyridine)iridium(III)-tripropylamine electrochemiluminescence
The effects of the nonionic surfactant Triton X-100 (poly(ethylene glycol) tert-octylphenyl ether) on the properties of tris(2-phenylpyridine)iridium(III) (Ir(ppy)3, where ppy = 2-phenylpyridine, electrochemiluminescence (ECL) have been investigated. Anodic oxidation of Ir(ppy)3 produces ECL in the presence of tri-n-propylamine (TPrA) in aqueous surfactant solution. Increases in ECL efficiency (≥10-fold) and TPrA oxidation current (≥2.0-fold) have been observed in surfactant media. The data support adsorption of surfactant on the electrode surface, thus facilitating TPrA and Ir(ppy)3 oxidation and leading to higher ECL efficiencies.
Cole, Christopher, Brian D. Muegge, and Mark M. Richter. "Effects of Poly (ethylene glycol) tert-Octylphenyl Ether on Tris (2-phenylpyridine) iridium (III)− Tripropylamine Electrochemiluminescence." Analytical chemistry 75, no. 3 (2003): 601-604.