Title

Electrogenerated chemiluminescence of Pb(II)-bromide complexes

Abstract

The electrochemistry and electrogenerated chemiluminescence (ECL) of Pb4Br11 3- in acetonitrile solution is reported. Pb4Br11 3- is formed in situ by the reaction of lead(II) and bromide ions with ECL generated upon sweep to positive potentials using tri-n-propylamine (TPrA) as an oxidative–reductive coreactant. An ECL efficiency (φecl) of 0.0079 was obtained compared to Ir(ppy)3 (ppy=2-phenylpyridine; φecl=1). The ECL intensity peaks at a potential corresponding to oxidation of TPrA and Pb4Br11 3- indicating that emission is from the lead-bromide cluster.

Pb4Br11 3-, formed in situ by the reaction between lead ion and excess bromide in acetonitrile solution, undergoes electrogenerated chemiluminescence (ECL) using tri-n-propylamine as an oxidative–reductive coreactant. The electrochemistry, spectroscopy and ECL are discussed.

Department(s)

Chemistry

Document Type

Article

DOI

https://doi.org/10.1016/j.ica.2003.12.008

Keywords

electrogenerated chemiluminescence, lead-bromide clusters

Publication Date

2004

Journal Title

Inorganica Chimica Acta

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