title: EPR and electrochemical quantification of oxygen using newly synthesized para-silylated triarylmethyl radicals.
abstract: Novel silylated triarylmethyl (TAM) radicals based on TAM core CT-03 and their electron paramagnetic resonance (EPR) spectra are evaluated as a function of oxygen concentration. Combination of peak-to-peak linewidth of the EPR signal and electrochemical determination allows designing a method for oxygen quantification in phosphate buffer, dimethylsulfoxide, and dichloromethane, which can be extended to other solvents.
authors.affiliation: LCBPT, UMR 8601 CNRS-Paris Descartes University , Sorbonne Paris Cité, Paris , France.
authors.forename: A
authors.initials: A
authors.lastname: Boutier-Pischon
authors.forename: F
authors.initials: F
authors.lastname: Auger
authors.forename: J-M
authors.initials: JM
authors.lastname: Noël
authors.forename: A
authors.initials: A
authors.lastname: Almario
authors.forename: Y-M
authors.initials: YM
authors.lastname: Frapart
mesh_terms: D055664:Electrochemical Techniques / Q000379:methods*; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D005609:Free Radicals / Q000138:chemical synthesis; D010100:Oxygen / Q000032:analysis*; D014320:Triphenylmethyl Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D005609:Free Radicals; D014320:Triphenylmethyl Compounds; D010100:Oxygen
keywords: electrochemistry; electron paramagnetic resonance; oximetry; silylated trityls; ultramicroelectrode