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Moving Difference (Mdiff) Non-Adiabatic Rapid Sweep (Nars) Epr Of Copper(Ii), James S. Hyde, Brian Bennett, Aaron W. Kittell, Jason M. Kowalski, Jason Walter Sidabras
Moving Difference (Mdiff) Non-Adiabatic Rapid Sweep (Nars) Epr Of Copper(Ii), James S. Hyde, Brian Bennett, Aaron W. Kittell, Jason M. Kowalski, Jason Walter Sidabras
Physics Faculty Research and Publications
Non-adiabatic rapid sweep (NARS) EPR spectroscopy has been introduced for application to nitroxide-labeled biological samples (Kittell et al., 2011). Displays are pure absorption, and are built up by acquiring data in spectral segments that are concatenated. In this paper we extend the method to frozen solutions of copper-imidazole, a square planar copper complex with four in-plane nitrogen ligands. Pure absorption spectra are created from concatenation of 170 5-gauss segments spanning 850 G at 1.9 GHz. These spectra, however, are not directly useful since nitrogen superhyperfine couplings are barely visible. Application of the moving difference (MDIFF) algorithm to the digitized NARS …