title: Using stannous ion as an excellent inorganic ECL coreactant for tris(2,2'-bipyridyl) ruthenium(II).
abstract: It was found that stannous chloride (SnCl(2)), as a popular inorganic reducing reagent, could obviously enhance the electrochemiluminescence (ECL) of tris(2,2'-bipyridyl) ruthenium(II) (Ru(bpy)(3)(2+)) in aqueous solution. Some factors affecting the ECL reactions between Ru(bpy)(3)(2+) and Sn(2+), including pH, concentrations of coreactant, and electrode materials, were investigated by comparison with a classic ECL coreactant tripropylamine (TPA). The Ru(bpy)(3)(2+)-Sn(2+) ECL coreactant system produces stronger and more stable ECL signals, can keep its excellent ECL activity over a wider pH range and has more choices in using electrode materials than the Ru(bpy)(3)(2+)-TPA ECL coreactant system. The ECL mechanism of the Ru(bpy)(3)(2+)-Sn(2+) coreactant system was also studied in detail.
authors.affiliation: MOE Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou Univiersity, Fujian, 350108, China.
authors.forename: Liyan
authors.initials: L
authors.lastname: Zheng
authors.forename: Binbin
authors.initials: B
authors.lastname: Wang
authors.forename: Yuwu
authors.initials: Y
authors.lastname: Chi
authors.forename: Shiping
authors.initials: S
authors.lastname: Song
authors.forename: Chunhai
authors.initials: C
authors.lastname: Fan
authors.forename: Guonan
authors.initials: G
authors.lastname: Chen
mesh_terms: D002413:Cations, Divalent / Q000737:chemistry; D049449:Luminescence; D009942:Organometallic Compounds / Q000737:chemistry*; D019163:Reducing Agents / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D002413:Cations, Divalent; D009942:Organometallic Compounds; D019163:Reducing Agents; D017971:Tin Compounds; C415768:tris(2,2'-bipyridyl)ruthenium(II); C023599:stannous chloride