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ERIC Number: EJ1013548
Record Type: Journal
Publication Date: 2013-Apr
Pages: 3
Abstractor: As Provided
ISSN: ISSN-0021-9584
A Demonstration of Simultaneous Electrochemiluminescence
Ibanez, Jorge G.; Zavala-Araiza, Daniel; Sotomayor-Martinez Barranco, Biaani; Torres-Perez, Jonatan; Camacho-Zuniga, Claudia; Bohrmann-Linde, Claudia; Tausch, Michael W.
Journal of Chemical Education, v90 n4 p470-472 Apr 2013
Paired (simultaneous) electrochemical processes can increase energy savings in selected cases by using the reactions at both electrodes of an electrochemical cell to perform a desired process, as is the case in the commercially successful chlor-alkali process. In the demonstration described herein, simultaneous blue electrochemiluminescence (ECL) is obtained with luminol in a basic medium in a divided electrochemical cell. ECL is obtained in the anolyte through the direct oxidation of luminol, the reaction products of which interact with H[subscript 2]O[subscript 2] in the vicinity of the electrode to yield an excited emitting species. ECL is also obtained in the catholyte through an indirect, mediated process involving the initial reduction of ClO[subscript 2] - to ClO-, which then reacts with luminol and H[subscript 2]O[subscript 2] to produce the excited emitting species. The co-reactant (H[subscript 2]O[subscript 2]) is needed to complete the reaction sequences in both compartments of the cell. This ECL phenomenon is visible to the naked eye in a darkened room at a distance of up to 5 m. (Contains 4 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A