Title

Phenol substituent effects on electrogenerated chemiluminescence quenching

Abstract

Efficient quenching of Ru(bpy)32+ (bpy = 2,2′-bipyridine) electrogenerated chemiluminescence (ECL) was observed in the presence of phenol and substituted phenols (e.g., 4-fluorophenol). Spectroscopic and electrochemical studies indicated that the mechanism of quenching involves energy transfer from the excited state luminophore to a benzoquinone derivative formed at the electrode. The efficiency of ECL quenching is directly related to the position of the substituent on the aromatic ring, with meta derivatives displaying the greatest magnitude of quenching. The degree of quenching does not appear to be related to the electron-donating or -withdrawing ability of the phenol substituent.

Department(s)

Chemistry

Document Type

Article

DOI

https://doi.org/10.1039/a904540f

Publication Date

2000

Recommended Citation

McCall, Jeff, and Mark M. Richter. "Phenol substituent effects on electrogenerated chemiluminescence quenching." Analyst 125, no. 3 (2000): 545-548.

Journal Title

Analyst

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