Electrochemiluminescence of a Lead Bromide Cluster

Pavneet Singh

Date of Graduation

Summer 2004

Degree

Master of Science in Chemistry

Department

Chemistry and Biochemistry

Committee Chair

Mark Richter

Abstract

The electrochemistry and electrogenerated chemiluminescence (ECL) of Pb₄Br₁₁³⁻ in acetonitrile solution is reported. Pb₄Br₁₁³⁻ 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 (TPA) as an oxidative-reductive coreactant. An ECL efficiency (øecl) of 0.0079 was obtained compared to Ir(ppy)₃ (ppy=2-phenylpyridine; øecl=1). The ECL intensity peaks at a potential corresponding to oxidation of TPA and Pb₄Br₁₁³⁻ indicating that emission is from the lead-bromide cluster.

Keywords

electrogenerated chemiluminescence, lead-bromide clusters, coreactant, ECL intensity, luminophores

Subject Categories

Chemistry

Copyright

© Pavneet Singh

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Dissertation/Thesis

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