Hot electron-induced cathodic electrochemiluminescence at oil film-covered carbon paste electrode and application to nano-molar determination of catechol

Immunoassay of β 2 -microglobulin at oxide-coated heavily doped p-silicon electrodes

“…Among the few exceptions was a study by Sun et. al., who observed HECL from Ru(bpy)3 2+ /S2O8 2--system at oil film-covered carbon paste electrodes [155]. The thickness of the insulating layer was not reported in their study, nor did they include any physical properties of paraffin used in their article.…”

Sensitive Detection of Caffeic Acid and Rutin via the Enhanced Anodic Electrochemiluminescence Signal of Luminol

“…For example, S2O8 2is reduced into SO4 •-at highly negative potentials, which is a strong oxidant to oxidize Ru(bpy)3 2+ to Ru(bpy)3 3+ to induce the strong cathodic ECL of Ru(bpy)3 2+ *. 39,41 In the presence of phenolic compounds, SO4 •is captured and cathodic ECL is quenched. For the cathodic ECL of luminol, O2 •-is formed on the cathode during the oxygen reduction reaction, which oxidized luminol into excited and produced cathodic ECL of luminol (Eq.…”

“…[35][36][37][38][39][40][41][42] For example, catechol quenches the solid cathodic ECL of Ru(bpy)3 2+ /S2O8 2with the paraffin-oil-filled carbon paste electrode as the working electrode at pH 9.0 with a pulse voltage to -17 V vs. Ag/AgCl. 39 With antioxidative abilities, phenols were oxidized by SO4that were produced by the reduction of S2O8 2using hot electrodes, and quenched the ECL between S2O8 2and Ru(bpy)3 2+ or CdS. 39,41 On the contrary, phenolic compounds enhance the ECL between S2O8 2and O2 with gold nanomaterials as the catalysts.…”

“…39 With antioxidative abilities, phenols were oxidized by SO4that were produced by the reduction of S2O8 2using hot electrodes, and quenched the ECL between S2O8 2and Ru(bpy)3 2+ or CdS. 39,41 On the contrary, phenolic compounds enhance the ECL between S2O8 2and O2 with gold nanomaterials as the catalysts. 43,44 Moreover, phenolic compounds enhance the ECL of Ru(bpy)3 2+ in an alkaline aqueous solution, probably because semiquinone radicals are produced on the anode, which assist the formation of active-oxygen-related radicals and excited Ru(bpy)3 2+ .…”

Enhanced chemiluminescence of the fluorescein–KIO4 system by CdTe quantum dots for determination of catechol

“…Therefore, the monitoring of CT in environmental samples is quite necessary. A series of analytic techniques, including electrochemiluminescence, electrochemistry approaches, spectro‐photometry and high performance liquid chromatography (HPLC) have been adopted for the detection of CT. Unfortunately, it is inconvenient for these methods to determine CT because of the sophisticated operations and expensive instrumentation.…”