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- W2077568952 abstract "The electrochemistry and electrogenerated chemiluminescence (ECL) of ruthenium(II) tris(bipyridine) (Ru(bpy)(3)(2+)) ion-exchanged in carbon nanotube (CNT)/Nafion composite films were investigated with tripropylamine (TPA) as a coreactant at a glassy carbon (GC) electrode. The major goal of this work was to investigate and develop new materials and immobilization approaches for the fabrication of ECL-based sensors with improved sensitivity, reactivity, and long-term stability. Ru(bpy)(3)(2+) could be strongly incorporated into Nafion film, but the rate of charge transfer was relative slow and its stability was also problematic. The interfusion of CNT in Nafion resulted in a high peak current of Ru(bpy)(3)(2+) and high ECL intensity. The results indicated that the composite film had more open structures and a larger surface area allowing faster diffusion of Ru(bpy)(3)(2+) and that the CNT could adsorb Ru(bpy)(3)(2+) and also acted as conducting pathways to connect Ru(bpy)(3)(2+) sites to the electrode. In the present work, the sensitivity of the ECL system at the CNT/Nafion film-modified electrodes was more than 2 orders of magnitude higher than that observed at a silica/Nafion composite film-modified electrode and 3 orders of magnitude higher than that at pure Nafion films. The CNT/Nafion composite film-modified GC electrodes also exhibited long-term stability." @default.
- W2077568952 created "2016-06-24" @default.
- W2077568952 creator A5022434752 @default.
- W2077568952 creator A5035360447 @default.
- W2077568952 date "2004-04-10" @default.
- W2077568952 modified "2023-10-12" @default.
- W2077568952 title "Electrogenerated Chemiluminescence from Ru(Bpy)<sub>3</sub><sup>2+</sup> Ion-Exchanged in Carbon Nanotube/Perfluorosulfonated Ionomer Composite Films" @default.
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- W2077568952 doi "https://doi.org/10.1021/ac035276e" @default.
- W2077568952 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15144175" @default.
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