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Magnetochemistry
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Magnetic Effects—a Tool for Studying the Mechanism of Chemical and...
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Magnetic Effects—a Tool for Studying the Mechanism of Chemical and Biochemical Processes

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Applications of Magnetism and Magnetic Materials".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 4556

Special Issue Editor

Prof. Dr. Evgenii Moiseevich Pliss

E-Mail Website
Guest Editor
Director Institute of Fundamental and Applied Chemistry, P.G. Demidov Yaroslavl State University, 150003 Yaroslavl, Russia
Interests: magnetic field effect; radical-chain oxidation; antioxidants

Special Issue Information

Dear Colleagues,

Magneto-biology is a field of knowledge that considers the phenomena accompanying the influence of permanent and alternating magnetic fields on biological systems at all levels: molecular, cellular, and whole organism. There is no doubt that magnetic fields influence the health and feeling of well-being in humans; the latter is a key factor stimulating both social and scientific interest in magneto-biology [1–3]. Magnetic effects represent a reliable and versatile tool and unambiguous indicator of reaction mechanisms.

The purpose of this issue is to summarize, illustrate, and critically analyze the basic principles of magnetic control of chemical and biological processes at both qualitative and quantitative levels.

The specific areas of focus are:

  • Chemical and biochemical reactions that show any significant (and experimentally detectable) magnetic field dependence.
  • Presentation of a physically clear and experimentally substantiated concept of magnetic effects in chemical and biochemical reactions.
  • Analysis of magnetic control of DNA synthesis.
  • Evaluation of the contribution to the magnetic dependence of biosystems of molecular–chemical processes in which spin carriers are born or participate—radicals, radical ions, paramagnetic particles.
  • Examples of the use of magnetic catalysis for the treatment and research of cognitive disorders and neurological diseases.

Prof. Dr. Evgenii Moiseevich Pliss
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Magnetochemistry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • magnetic field effect
  • physical principles of magnetic phenomena
  • magnetic catalysis
  • magnetic control of the reactivity of paramagnetic intermediates

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Published Papers (2 papers)

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Research

14 pages, 4443 KiB  
Article
Homoconjugation Mediated Spin-Spin Coupling in Triptycene Nitronyl Nitroxide Diradicals
by Chengfang Shi, Laiwei Gao, Martin Baumgarten, Dongdong Wei, Zhipeng Xu, Wenping Wang and Di Wang
Magnetochemistry 2023, 9(7), 178; https://doi.org/10.3390/magnetochemistry9070178 - 9 Jul 2023
Cited by 5 | Viewed by 2037
Abstract
In contrast to diradical linked by π-conjugation, there have been only a limited number of studies reported for those linked by homoconjugation systems. Bis(nitronyl nitroxide) diradicals and monoradical connected by a core non-rigid triptycene unit were synthesized. EPR spectroscopy and SQUID were employed [...] Read more.
In contrast to diradical linked by π-conjugation, there have been only a limited number of studies reported for those linked by homoconjugation systems. Bis(nitronyl nitroxide) diradicals and monoradical connected by a core non-rigid triptycene unit were synthesized. EPR spectroscopy and SQUID were employed to investigate the magnetic exchange interactions. The results demonstrate that the values of ΔEST are 0.19 kcal/mol (J = 34.4 cm−1) for 2,6-TP-NN and −0.21 kcal/mol (J = −36.9 cm−1) for 2,7-TP-NN, indicating ferromagnetic interaction and antiferromagnetic interaction, respectively. The spin polarization rule is not a precise predictor of the behavior of triptycene diradicals, and therefore, we improve the model. The experimental findings indicate that homoconjugation can function directly as a coupling pathway between the two spin centers, which is in qualitative agreement with the DFT theoretical calculations and the Borden rule. This research has found a special means of achieving spin coupling in non-rigid aromatics by means of homoconjugation. Full article
(This article belongs to the Special Issue Magnetic Effects—a Tool for Studying the Mechanism of Chemical and Biochemical Processes)
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10 pages, 1595 KiB  
Article
Influence of a Constant Magnetic Field on the Mechanism of Adrenaline Oxidation
by Vyacheslav N. Kazin, Evgenii A. Guzov, Valentina A. Moshareva and Evgenii M. Pliss
Magnetochemistry 2022, 8(7), 70; https://doi.org/10.3390/magnetochemistry8070070 - 1 Jul 2022
Cited by 2 | Viewed by 1905
Abstract
In order to establish the role of the magnetic effect in the key stages of the autoxidation and initiated oxidation radical-chain reactions, the experimental data and kinetic analysis of the influence of a magnetic field on the oxidative transformations of adrenaline are presented [...] Read more.
In order to establish the role of the magnetic effect in the key stages of the autoxidation and initiated oxidation radical-chain reactions, the experimental data and kinetic analysis of the influence of a magnetic field on the oxidative transformations of adrenaline are presented in this work. In the case of autoxidation, the process is being controlled by the rate of adrenaline consumption in the gross process of quinoid oxidation. The analysis of the obtained results is estimative and is based on the assumption of the leading role of superoxide radical during the autoxidation. Superoxide radical concentration increases with the increase in the applied magnetic field strength, which leads to the decrease in the rate of initiation of the quinoid process. In the case of initiated oxidation, the results obtained are based on the known radical-chain mechanism, and they were interpreted using the theory of radical pairs. The observed magnetic effect is explained by the influence of a constant magnetic field on the mechanism of chain termination of radical-chain oxidation and/or initiation of the autoxidation process. Full article
(This article belongs to the Special Issue Magnetic Effects—a Tool for Studying the Mechanism of Chemical and Biochemical Processes)
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