Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 601-604 |
| Number of pages | 4 |
| Journal | Analytical Chemistry |
| Volume | 75 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 1 2003 |