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Electrogenerated chemiluminescence:Part XLVIII. Electrochemistry and electrogenerated chemiluminescence of bis(2,4,6-trichlorophenyl) oxalate-luminescer systems

Authors
Journal
Journal of Electroanalytical Chemistry
0022-0728
Publisher
Elsevier
Publication Date
Volume
238
Identifiers
DOI: 10.1016/0022-0728(87)85180-x
Disciplines
  • Chemistry

Abstract

Abstract The electrochemical behavior and electrogenerated chemiluminescence (ECL) of bis(2,4,6-trichloro-phenyl) oxalate (TCPO) in acetonitrile+benzene (2:1 v/v) solutions have been investigated. Quasireversible one-electron reduction of TCPO occurs, and the reduction product, the anion radical TCPO − (in the absence of O 2), is stable on the cyclic voltammetric time scale. In the presence of oxygen, TCPO − and O − 2 react, ultimately producing trichlorophenoxide ion and CO 2. ECL is observed on reduction of TCPO+O 2 solutions containing a luminescent compound (e.g., 9,10-diphenylanthracene) where the ECL spectrum is typical of the luminescer. No ECL is observed in the absence of O 2 during reduction of TCPO and fluorescer. The ECL only appears with trace amounts of O 2, suggesting that this system might be useful as a detector for very low concentrations of O 2.

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