ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2013
Moving difference (MDIFF) non-adiabatic rapid sweep (NARS) EPR of copper(II).
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 20 citations in OpenAlex.
- Segmented-overlap Fourier filtering and averaging (SOFFA) approach to improve concentration sensitivity of magnetic resonance spectra.Magnetic resonance (Gottingen, Germany) · 2026Article
- Hyperfine Decoupling of ESR Spectra Using Wavelet Transform.Magnetochemistry (Basel, Switzerland) · 2022Article
- EPR Everywhere.Applied magnetic resonance · 2021Review
- Rapid-Scan Electron Paramagnetic Resonance of Highly Resolved Hyperfine Lines in Organic Radicals.Chemphyschem : a European journal of chemical physics and physical chemistry · 2020Article
- General solution for rapid scan EPR deconvolution problem.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2020Article
- Extending electron paramagnetic resonance to nanoliter volume protein single crystals using a self-resonant microhelix.Science advances · 2019Article
- Resolved Hyperfine at L-band for High-Spin CoEDTA, A Model for Co Sites in Proteins.International journal of molecular sciences · 2019Article
- Autobiography of James S. Hyde.Applied magnetic resonance · 2017Article
- Rapid-scan EPR imaging.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2017Review
- Field-stepped direct detection electron paramagnetic resonance.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2015Article
- Spin-label CW microwave power saturation and rapid passage with triangular non-adiabatic rapid sweep (NARS) and adiabatic rapid passage (ARP) EPR spectroscopy.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2015Article
- EPR Methods for Biological Cu(II): L-Band CW and NARS.Methods in enzymology · 2015Article
- Rapid-Scan EPR of Nitroxide Spin Labels and Semiquinones.Methods in enzymology · 2015Article
- Rapid-scan EPR of immobilized nitroxides.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2014Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
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 pure absorption spectrum is used to produce spectra that are analogous to the first harmonic EPR. The signal intensity is about four times higher than when using conventional 100 kHz field modulation, depending on line shape. MDIFF not only filters the spectrum, but also the noise, resulting in further improvement of the SNR for the same signal acquisition time. The MDIFF amplitude can be optimized retrospectively, different spectral regions can be examined at different amplitudes, and an amplitude can be used that is substantially greater than the upper limit of the field modulation amplitude of a conventional EPR spectrometer, which improves the signal-to-noise ratio of broad lines.
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