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Quenching of the Electrochemiluminescence of tris(2,2'-bipyridine)-ruthenium(II) by Sodium diphenylamine-4-sulfonate

Quenching of the Electrochemiluminescence of tris(2,2'-bipyridine)-ruthenium(II) by Sodium diphenylamine-4-sulfonate

Yinggui Zhu, Boying Zhao, Liusan Li, Guangchao Zhao

Anal Sci. 2009 Jun;25(6):785-8.

PMID: 19531888

Abstract:

Efficient quenching electrochemiluminescence (ECL) of the tris(2,2'-bipyridine)ruthenium(II)/tripropylamine (Ru(bpy)(3)(2+)/TPrA) system by a novel quencher, sodium diphenylamine-4-sulfonate (SDS), has been investigated. The quenching behaviors can be observed with a 100-fold excess of SDS over Ru(bpy)(3)(2+). The mechanism of quenching is believed to involve energy transfer from the excited-state Ru(bpy)(3)(2+*) to the dimer of SDS, which was formed after the electrochemical oxidation of SDS at the electrode surface. Photoluminescence experiments coupled with bulk electrolysis support formation of the SDS dimer upon electrochemical oxidation.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP6152676	Sodium diphenylamine-4-sulfonate		6152-67-6	Price

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