title: Differential pulse polarography and electron spin resonance spectroscopy of nitroxyl free radicals used as ESR-spin probes.
abstract: Differential pulse polarography (DPP) and electron spin resonance (ESR) were used to study the influence of substituents and of the pH of the medium on DPP peak potentials (electrochemical reduction) resp. kreduction (chemical reduction) of nitroxyl free radicals. The DPP peak potentials can be used to select the appropriate nitroxide spin label for relevant biochemical and biophysical applications.
authors.affiliation: Institute of Pharmacy, Humboldt University of Berlin, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Kroll
authors.forename: K H
authors.initials: KH
authors.lastname: Schwarz
authors.forename: P
authors.initials: P
authors.lastname: Surmann
authors.forename: H H
authors.initials: HH
authors.lastname: Borchert
mesh_terms: D000465:Algorithms; D003497:Cyclic N-Oxides / Q000737:chemistry*; D004563:Electrochemistry; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000737:chemistry*; D010880:Piperidines / Q000737:chemistry*; D011048:Polarography; D013113:Spin Labels
chemical_list: D003497:Cyclic N-Oxides; D005609:Free Radicals; D007093:Imidazoles; D010880:Piperidines; D013113:Spin Labels