Electrogenerated chemiluminescence of ruthenium complex immobilized in a highly cross‐linked polymer and its analytical applications

Abstract

Electrogenerated chemiluminescence (ECL) of a ruthenium complex polymer modified carbon paste electrode and its analytical applications were investigated. The ruthenium complex polymer was prepared using bis(2,2-bipyridine) (4,4-dicarboxy-2,2-bipyridine) ruthenium(II). The ECL behaviours of ruthenium complex polymer modified carbon paste electrode were investigated in the absence and presence of tripropylamine (TPA). The modified carbon paste electrode exhibited long-term stability and fine reproducibility. The ECL intensity of the modified carbon paste electrode was linear with the concentration of TPA in the range 2.0 x 10(-6)-3.8 x 10(-3) mol/L, with a detection limit (S:N = 3) of 6 x 10(-7) mol/L. It was also found that raceanisodamine could enhance the ECL intensity of the modified electrode. The ECL intensity of the modified carbon paste electrode was linear with the concentration of raceanisodamine in the range 1.1 x 10(-5)-6.0 x 10(-4) mol/L, with a detection limit (S:N = 3) of 6 x 10(-6) mol/L. This work demonstrates that the entrapment of ruthenium complex in a highly cross-linked polymer is a promising approach to construct an ECL modified electrode with long-term stability and fine reproducibility. The modified electrode designed has a potential application in the ECL detector.

Electrochemiluminescence of palmatine being oxidized by electrogenerated hydroxyl radical and its analytical application

“…It was based on chemical oxidation of palmatine base by electrogenerated hydroxyl radical. As compared with the luminol–potassium ferricyanide CL method (7) and the ECL methods using analyte as coreactant (12–16), enhancer (17) or inhibitor (18) for the known ECL emitter, the proposed method was simpler and did not require any luminescence agent. It could also be applied to simultaneous determination of palmatine and berberine in natural medical plants or traditional Chinese medicines if it was used as the detector in CE or HPLC.…”

“…The third type is the conventional CL reactions initiated by electrochemical means such as the luminol–H 2 O 2 system. With the ECL reactions mentioned above, many ECL methods have been proposed by using analyte as coreactant (12–16), enhancer (17) or inhibitor (18) for the known ECL emitter. As these ECL depend on the used luminescence agents, both the development and the performance of ECL methods are limited by the kind and chemical property of these used luminescence agents to some extent.…”

Electrochemiluminescence of an electrocatalytic action of etimicin on Tris(2,2′‐bipyridyl)ruthenium(II) immobilized in Nafion modified carbon paste electrode

“…[12,13,17] Therefore, extensive efforts have been directed towards the immobilization of Ru(bpy) 3 2+ on electrode surfaces to fabricate a regenerable ECL sensor. Unitl now, a number of different approaches have been tried to immobilize Ru(bpy) 3 2+ or its derivatives on a variety of different electrode surfaces[18–36], including the immobilization of Ru(bpy) 3 2+ in Nafion films,[18] the direct attachment to an electrode by a Langmuir–Blodgett techniques,[19,20] monolayers[21] or by self‐assembly,[22,23] immobilization in sol–gel[16,24–27] and nanoparticles[28,29] and other materials. [30–35] Dong and co‐workers reported Ru(bpy) 3 2+ ECL at a lauric acid‐modified carbon paste electrode.…”

Enhanced Electrochemiluminescence Employed for the Selective Detection of Methyl Parathion Based on a Zirconia Nanoparticle Film Modified Electrode

“…However, the ECL generation of the reaction at the electrode surface, underwent electron-transfer reactions, and could effectively avoid impacts of the electrode. 46 We found in the experiment that MP absorbed on the surface of ZrO2 NPs can significantly enhance the ECL signal of luminol; the added value of the luminous signal was proportional to the concentration of MP that can be used for the quantification of MP. However, to the best of our knowledge, the use of ECL methods employing a ZrO2 modified electrode for signal detection has not yet been reported.…”