Light emission at electrodes: An electrochemiluminescence demonstration

Ed Bolton and Mark M. Richter
Department of Chemistry, Southwest Missouri State University, Springfield, MO 65804
J. Chem. Educ., 2001, 78 (5), p 641
DOI: 10.1021/ed078p641
Publication Date (Web): May 1, 2001

Abstract

Electrochemiluminescence involves the production of light near an electrode surface by the generation of species that can undergo highly energetic electron transfer reactions. A demonstration is presented that uses Ru(bpy)32+ (bpy = 2,2'-bipyridine) as the light-emitting molecule and tri-n-propylamine (C9H21N) as a coreactant (i.e., a species capable of generating a strong reductant upon oxidation). Upon application of a 3-volt potential to a platinum electrode immersed in a Ru(bpy)32+-C9H21N solution, an orange glow, readily visible in a semidarkened room, is produced at the electrode.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Demonstrations

Keywords (Feature):

Tested Demonstrations

Keywords (Subject):

Electrochemistry

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

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      A new physical chemistry laboratory experience has been designed for upper-level undergraduate chemistry majors. Students customize the first 10 weeks of their laboratory experience by choosing their own set of experiments (from a manual of choices) and ...

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  • Received: August 03, 2009

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