Abstract
The electrogenerated chemiluminescence (ECL) of platinum (II) octaethyl-porphyrin (PtOEP) in acetonitrile:methylene chloride (CH 3CN:CH 2Cl 2, 50:50 v/v) and CH 2Cl 2 is reported. ECL was generated upon sweep to positive potentials using tri- n-propylamine (TPrA) as an oxidative–reductive coreactant. ECL efficiencies ( ϕ ecl) of 0.18 in CH 3CN:CH 2Cl 2 (50:50 v/v) and 3.90 in methylene chloride were obtained using Ru(bpy) 3(PF 6) 2 (bpy = 2,2′-bipyridine) as a relative standard ( ϕ ecl = 1). The ECL intensity peaks at a potential corresponding to oxidation of PtOEP and TPrA, and ECL emission spectra are nearly identical to photoluminescence emission spectra, indicating that emission is from the PtOEP triplet state.
Published Version
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