ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2014
Frequency dependence of electron spin-lattice relaxation for semiquinones in alcohol solutions.
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Phononic modulation of spin-lattice relaxation in molecular qubit frameworks.Nature communications · 2024Article
- Stable organic radical qubits and their applications in quantum information science.Innovation (Cambridge (Mass.)) · 2024Review
- Rapid-scan coherence signals in X-band EPR spectra of semiquinones with small hyperfine splittings.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2015Article
- Rapid-Scan EPR of Nitroxide Spin Labels and Semiquinones.Methods in enzymology · 2015Article
- Multifrequency Pulsed EPR and the Characterization of Molecular Dynamics.Methods in enzymology · 2015Article
- X-band electron spin relaxation times for four aromatic radicals in fluid solution and comparison with other organic radicals.Applied magnetic resonance · 2014Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
The spin-lattice relaxation rates at 293 K for three anionic semiquinones (2,5-di-t-butyl-1,4-benzosemiquinone, 2,6-di-t-butyl-1,4-benzosemiquinone, and 2,3,5,6-tetramethoxy-1,4-benzosemiquinone) were studied at up to 8 frequencies between 250 MHz and 34 GHz in ethanol or methanol solution containing high concentrations of OH(-). The relaxation rates are about a factor of 2 faster at lower frequencies than at 9 or 34 GHz. However, in perdeuterated alcohols the relaxation rates exhibit little frequency dependence, which demonstrates that the dominant frequency-dependent contribution to relaxation is modulation of dipolar interactions with solvent nuclei. The relaxation rates were modeled as the sum of two frequency-independent contributions (spin rotation and a local mode) and two frequency-dependent contributions (modulation of dipolar interaction with solvent nuclei and a much smaller contribution from modulation of g anisotropy). The correlation time for modulation of the interaction with solvent nuclei is longer than the tumbling correlation time of the semiquinone and is consistent with hydrogen bonding of the alcohol to the oxygen atoms of the semiquinones.
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Registered trials
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