The work in part 6 of this series (J. Phys. Chem. A 2009, 113, 4930), addressing the task of separating the effects of Heisenberg spin exchange (HSE) and dipole-dipole interactions (DD) on electron paramagnetic resonance (EPR) spectra of nitroxide spi . . .

The work in part 1 of this series (J. Phys. Chem. B. 1997, 101, 8707) is extended experimentally and theoretically to include inhomogeneously broadened nitroxide spectra and high spin exchange frequencies. The nitroxide spin probe 16-doxylstearic acid . . .

A stable, monoprotic nitroxide spin probe is utilized as a model to study molecular collisions in aqueous electrolyte solutions. The rate constants of bimolecular collisions, Kcol for 2,2,5,5-tetramethylpyrrolidin-1-oxyl-3-carboxylic acid (CP) when it . . .

Bimolecular collisions between perdeuterated 2,2,6,6-tetramethyl-4-oxopiperidine-l-oxyl molecules in three alkanes have been studied by measuring the electron paramagnetic resonance (EPR) spectral changes induced by spin exchange. We define an "encoun . . .

A method to separate the effects of Heisenberg spin exchange (HSE) and dipole-dipole (DD) interactions on EPR spectra of nitroxide spin probes in solution by employing 15N and 14N nitroxide spin probes in parallel experiments is developed theoreticall . . .

EPR spectra of perdeuterated 2,2,6,6-tetramethyl-4-oxopiperidine-1-oxyl (PDT) are studied as functions of molar concentration, c, and temperature, T, in water and 70 wt % glycerol in water. The increase of the intrinsic line width averaged over the th . . .

EPR line shifts due to spin exchange of perdeuterated 2,2,6,6-tetramethyl-4-oxopiperidine-1-oxyl (14N−PDT) in aqueous solutions and the same probe isotopically substituted with 15N (15N−PDT) were measured from 293 to 338 and 287 to 353 K, respectively . . .

The work in part 2 of this series (J. Phys. Chem. A 2002, 106, 4846) is extended experimentally and theoretically to include inhomogeneously broadened nitroxide spectra consisting of five hyperfine lines due to coupling to two equivalent 14N nuclei. T . . .

EPR spectra of aqueous solutions of the singly charged surfactant nitroxide 4-[N,N-dimethyl-N-(n-dodecyl)ammonium]-2,2,6,6-tetramethylpiperidinyl-N-oxy bromide-d16 (DCAT12) are studied as functions of the molar concentration, c = 0.1−8 mM, and the tem . . .