A method for enhancing the resolution of overlapping EPR lines |
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| Affiliation: | 1. Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80210, USA;2. Department of Pharmaceutical Sciences, School of Pharmacy & In Vivo Multifunctional Magnetic Resonance Center, West Virginia University, Morgantown, WV 26506, USA;1. Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan;2. Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan;3. Division of Material Science, Faculty of Pure and Applied Science, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-5358, Japan;1. Centre for Oil and Gas Research and Development, Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada;2. Environment and Climate Change Canada, National Water Research Institute, Burlington, Ontario L7R 4A6, Canada;3. Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, Ontario K1A 0H3, Canada;1. Departamento de Ciencias Farmacéuticas, Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, CIETUS, IBSAL, 37007-Salamanca, Spain;2. Instituto de Parasitología y Biomedicina “López-Neyra”, IPBLN-CSIC, Granada, Spain;3. Centro de Investigaciones Biológicas, CIB-CSIC, Madrid, Spain |
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| Abstract: | ![]()
A simple and fast method for enhancing the resolution of overlapping EPR lines based on the convolution theorem of Fourier analysis is presented. The method provides two analytic expressions in real space by means of which the user can remove, by deconvolution, either a Lorentzian or a Gaussian function from a given experimental spectrum. This method is applied to deconvolve the line-overlapping EPR spectrum of molybdenumphthalocyanine (MoPc) in solution in fuming sulfuric acid. The deconvolved spectrum is then compared with the EPR spectrum of MoPc incorporated in concentrated sulfuric acid where the lines do not extensively overlap. Comparison shows that the method is able to enhance the resolution of the originally masked hyperfine pattern of MoPc in the fuming sulfuric acid spectrum. This method can be easily applied to other spectroscopies. |
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