Magnetochemistry and chemical synthesis

Hu, Lin; Xia, Guoliang; Chen, Qianwang

doi:10.1088/1674-1056/28/3/037102

Cited by 3 publications

(5 citation statements)

References 30 publications

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“…Another significant physical force that controls chemical reactions is the magnetic field. In recent years, numerous chemical systems with diverse magnetic field intensities have been used to study a wide range of magnetic field effects on chemical reactions [6] . In addition to chemical, electrical, and magnetic field alterations, molecules may be closely coupled to light to alter their chemical and physical characteristics [98] .…”

Section: Discussionmentioning

confidence: 99%

“…In recent years, numerous chemical systems with diverse magnetic field intensities have been used to study a wide range of magnetic field effects on chemical reactions. [6] In addition to chemical, electrical, and magnetic field alterations, molecules may be closely coupled to light to alter their chemical and physical characteristics. [98] Light is a constant example of how nature uses magnetic and electric fields in the form of electromagnetic radiation.…”

Section: Future Directionsmentioning

confidence: 99%

“…With the rapid progress of science and technology, EFs gradually penetrate from pure physics to chemistry, biology, medicine, and other areas. [6] In homogeneous catalysis, [7] heterogeneous catalysis, [8] and electrochemical reactions, [9] EF is frequently used as an externally acting potential. Redox reactions involve oxidation and reduction, while non-redox reactions don't follow either of these processes.…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, the EF has been considered an important method to examine the electrical characteristics of materials. With the rapid progress of science and technology, EFs gradually penetrate from pure physics to chemistry, biology, medicine, and other areas [6] . In homogeneous catalysis, [7] heterogeneous catalysis, [8] and electrochemical reactions, [9] EF is frequently used as an externally acting potential.…”

Section: Introductionmentioning

confidence: 99%

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Electric‐Field‐Induced Organic Transformations

2023

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Experiments showed that the existence of electric fields in non‐redox processes may alter the catalytic activity, rate enhancement, and selection of organic reactions. It is expected that the interaction between electric fields and chemical reactions will create new avenues for producing materials with desired properties in several chemical disciplines, including synthetic organic chemistry, catalysis, nanotechnology, membrane technology, and enzyme catalysis. Specifically, in this review, we discuss the elegant experimental investigations carried out using the scanning tunneling microscope, the interfacial electric field, and designed local electric fields. The results of these studies are remarkable, leading to new information on the function of electric fields in controlling chemical reactivity and selectivity in different reactions and offering a glimpse of the great potential of electrostatic fields. This article not only presents the core concepts of field‐induced chemical transformations but also illustrates the potential use of electric field catalysis in chemistry and other fields.

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Section: Discussionmentioning

confidence: 99%

Section: Future Directionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electric‐Field‐Induced Organic Transformations

2023

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“…As a type of important thermodynamic parameter, the magnetic field has been extensively utilized to manipulate the morphology, structure, and product phase during the synthesis and growth of the nanomaterials [21][22][23][24]. For instance, Ding et al have demonstrated a magneto-hydrothermal approach to prepare pure and stable 1T-MoS 2 nanosheets.…”

Section: Introductionmentioning

confidence: 99%

Tuning Structure and Properties of a Ferromagnetic Organic Semiconductor via a Magnetic Field-Modified Reduction Process

Zhou,

Cheng,

et al. 2024

Magnetochemistry

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The development of novel synthesis and assembly strategies is critical to achieving a ferromagnetic organic semiconductor with high Curie temperature. In this study, we report a high magnetic field (HMF)-modified solvothermal approach for the reduction in neutral perylene diimide (PDI) into the dianion species to prepare the PDI magnets comprising radical anions after subsequent oxidation processes. The PDI materials, assembled from the dianion solution by an HMF-modified reduction, exhibit a smaller crystallite size and an enlarged distance of the π-π stacking in the PDI aggregates. Furthermore, the PDI magnets obtained from the process under a 9T field reveal weakened ferromagnetism and the rapid degradation of electrical conductivity compared to those prepared without a magnetic field. Based on spectral and structural characterizations, such performance deterioration originates from the enhanced instability of the radical anions exposed to air, as well as the decreased crystallinity for the radical PDIs synthesized from the HMF-modified reduction process. This work demonstrates that magnetic fields offer an effective way in the material synthesis process to manipulate the structure and magnetic properties of the radical-based organic magnets.

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Effects of magnetic fields on the Current-Voltage (I-V) characteristics of the chitosan membrane

Sumadiyasa

Putra

Wulandari

et al. 2020

J. Phys.: Conf. Ser.

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This work aimed to study the effect of magnetic fields on the current-voltage (I-V) characteristics of a chitosan membrane. The study consists of the plateau length, limiting current density (LCD), and the ratio of resistance of region III (RIII) and region I (RI) (RIII/RI). The chitosan membranes were prepared by a casting method using chitosan as a matrix and acetic acid as a solvent. The chitosan membranes polymerized under a strong magnetic field of 1.5 mT applied along the membrane surface with various times i.e. 2, 4, 8, and 12 h. The I-V measurements were conducted using a cell model with two working electrodes made of platinum and two reference electrodes connected to a voltmeter. The electrolyte solutions used were HCl and CaCl2 with a concentration of 0.025 M. All experiments were carried out at a room temperature of 28.6 °C. The results showed that the plateau length, LCD and RIII/RI of the chitosan membrane is influenced by the magnetic field given during the membrane formation reaction. The magnitude of the impact depends on the length of exposure. These results can be used in tailoring the chitosan membrane according to the application needed.

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Magnetochemistry and chemical synthesis

Cited by 3 publications

References 30 publications

Electric‐Field‐Induced Organic Transformations

Electric‐Field‐Induced Organic Transformations

Tuning Structure and Properties of a Ferromagnetic Organic Semiconductor via a Magnetic Field-Modified Reduction Process

Effects of magnetic fields on the Current-Voltage (I-V) characteristics of the chitosan membrane

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