AI Article Synopsis
- The synthesis of high-spin organic polymers is challenging due to the instability of organic radicals, particularly when they are magnetically linked.
- This study introduces a method using a stable fluorenyl radical for creating these polymers, connected by -triazine to enable ferromagnetic coupling.
- The research successfully demonstrates ferromagnetic interactions in the resulting high-spin polymers after oxidation, marking a significant breakthrough in the field.
Article Abstract
The syntheses of high-spin organic polymers have been a daunting task due to the highly reactive nature of organic radicals, especially when they are ferromagnetically coupled. In this paper, we report our approach to obtain high-spin organic polymers, in which a reasonably stable fluorenyl radical was employed as the primary radical unit, and -triazine serves as the connector that facilitates ferromagnetic coupling between them. Initially, the diamagnetic polymer precursor was synthesized by cyclotrimerization of a cyano-monomer. Subsequently, the high-spin polymers were obtained by oxidizing corresponding anionic polymers using O (6) or I (7). The temperature-dependent magnetic moments, and field-dependent magnetization data obtained from SQUID measurements revealed ferromagnetic couplings between primary radical units, with coupling = 7.5 cm and 38.6 cm. The percentages of primary unit in the radical form are 29%, and 47% for 6 and 7, respectively. Notably, this marks the first reported instance of a high-spin fluorenyl radical polymer exhibiting ferromagnetic coupling.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11123602 | PMC |
| http://dx.doi.org/10.1039/d4ra03034f | DOI Listing |
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Article Synopsis
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- This study introduces a method using a stable fluorenyl radical for creating these polymers, connected by -triazine to enable ferromagnetic coupling.
- The research successfully demonstrates ferromagnetic interactions in the resulting high-spin polymers after oxidation, marking a significant breakthrough in the field.
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