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Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)

[Image: see text] A new organic–inorganic hybrid, AZEMnBr, has been synthesized and characterized. The thermal differential scanning calorimetry, differential thermal analysis, and thermogravimetric analyses indicate one structural phase transition (PT) at 346 and 349 K, on cooling and heating, resp...

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Autores principales: Rok, Magdalena, Zarychta, Bartosz, Janicki, Rafał, Witwicki, Maciej, Bieńko, Alina, Bator, Grażyna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9006216/
https://www.ncbi.nlm.nih.gov/pubmed/35343686
http://dx.doi.org/10.1021/acs.inorgchem.2c00363
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author Rok, Magdalena
Zarychta, Bartosz
Janicki, Rafał
Witwicki, Maciej
Bieńko, Alina
Bator, Grażyna
author_facet Rok, Magdalena
Zarychta, Bartosz
Janicki, Rafał
Witwicki, Maciej
Bieńko, Alina
Bator, Grażyna
author_sort Rok, Magdalena
collection PubMed
description [Image: see text] A new organic–inorganic hybrid, AZEMnBr, has been synthesized and characterized. The thermal differential scanning calorimetry, differential thermal analysis, and thermogravimetric analyses indicate one structural phase transition (PT) at 346 and 349 K, on cooling and heating, respectively. AZEMnBr crystallizes at 365 K in the orthorhombic, Pnma, structure, which transforms to monoclinic P2(1)/n at 200 K. Due to the X-ray diffraction studies, the anionic MnBr(4)(2–) moiety is discrete. The azetidinium cations show dynamical disorder in the high-temperature phase. In the proposed structural PT, the mechanism is classified as an order–disorder type. The structural changes affect the dielectric response. In this paper, the multiple switches between low- and high- dielectric states are presented. In addition, it was also observed that the crystal possesses a mutation of fluorescent properties between phase ON and OFF in the PT’s point vicinity. We also demonstrate that EPR spectroscopy effectively detects PTs in structurally diverse Mn(II) complexes. AZEMnBr compounds show DC magnetic data consistent with the S = 5/2 spin system with small zero-field splitting, which was confirmed by EPR measurements and slow magnetic relaxation under the moderate DC magnetic field typical for a single-ion magnet behavior. Given the above, this organic–inorganic hybrid can be considered a rare example of multifunctional materials that exhibit dielectric, optical, and magnetic activity.
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spelling pubmed-90062162022-04-13 Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4) Rok, Magdalena Zarychta, Bartosz Janicki, Rafał Witwicki, Maciej Bieńko, Alina Bator, Grażyna Inorg Chem [Image: see text] A new organic–inorganic hybrid, AZEMnBr, has been synthesized and characterized. The thermal differential scanning calorimetry, differential thermal analysis, and thermogravimetric analyses indicate one structural phase transition (PT) at 346 and 349 K, on cooling and heating, respectively. AZEMnBr crystallizes at 365 K in the orthorhombic, Pnma, structure, which transforms to monoclinic P2(1)/n at 200 K. Due to the X-ray diffraction studies, the anionic MnBr(4)(2–) moiety is discrete. The azetidinium cations show dynamical disorder in the high-temperature phase. In the proposed structural PT, the mechanism is classified as an order–disorder type. The structural changes affect the dielectric response. In this paper, the multiple switches between low- and high- dielectric states are presented. In addition, it was also observed that the crystal possesses a mutation of fluorescent properties between phase ON and OFF in the PT’s point vicinity. We also demonstrate that EPR spectroscopy effectively detects PTs in structurally diverse Mn(II) complexes. AZEMnBr compounds show DC magnetic data consistent with the S = 5/2 spin system with small zero-field splitting, which was confirmed by EPR measurements and slow magnetic relaxation under the moderate DC magnetic field typical for a single-ion magnet behavior. Given the above, this organic–inorganic hybrid can be considered a rare example of multifunctional materials that exhibit dielectric, optical, and magnetic activity. American Chemical Society 2022-03-28 2022-04-11 /pmc/articles/PMC9006216/ /pubmed/35343686 http://dx.doi.org/10.1021/acs.inorgchem.2c00363 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Rok, Magdalena
Zarychta, Bartosz
Janicki, Rafał
Witwicki, Maciej
Bieńko, Alina
Bator, Grażyna
Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)
title Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)
title_full Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)
title_fullStr Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)
title_full_unstemmed Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)
title_short Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)(2)MnBr(4)
title_sort dielectric-optical switches: photoluminescent, epr, and magnetic studies on organic–inorganic hybrid (azetidinium)(2)mnbr(4)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9006216/
https://www.ncbi.nlm.nih.gov/pubmed/35343686
http://dx.doi.org/10.1021/acs.inorgchem.2c00363
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