Journal
MATERIALS LETTERS
Volume 62, Issue 3, Pages 458-461Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2007.05.065
Keywords
Ru(bpy)(3)(2+); gold; Nafion; luminescence; TPA; composite materials
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The unique electrochemiluminescence (ECL) behavior of tris(bipyridine) ruthenium(II) (Ru(bpy)(3)(2+) immobilized in a gold/Nafion/Ru(bpy)(3)(2+) composite material was investigated. In this composite, the Ru(bpy)(3)(2+) ECL was found mainly occurred at 0-0.4 V during the cathodic scan process and the ECL peak was at about 0.1 V, which was quite different to the reported Ru(bpy)(3)(2+) ECL. Similar to the generally observed Ru(bpy)(3)(2+) ECL, the present ECL also could be enhanced by tri-n-propylarnine (TPA). It is also unique that in the presence of TPA, another ECL peak at about 0.38 V occurred. These two ECL peak potentials all could be used as characteristic potential for the ECL determination of TPA. (c) 2007 Elsevier B.V. All rights reserved.
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