A Semiconducting Organic‐Inorganic Hybrid Metal Halide [(C6H15ClNO)2CdBr4] with Switchable Dielectric and Large Phase Transition Thermal Hysteresis

A semiconducting organic‐inorganic hybrid compound [(C6H15ClNO)2CdBr4] (1), which displays excellent switchable dielectric, has been successfully synthesized. Systematic characterizations including variable‐temperature structural analyses, DSC, TG, variable‐temperature dielectric measurements, solid...

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Bibliographic Details
Published in:ChemistrySelect (Weinheim) 2019-04, Vol.4 (13), p.3921-3925
Main Authors: Sui, Yan, Zhang, Gui‐Xin, Wang, Wen‐Qian, Hu, Fan, Liu, Cui‐Lian, Luo, Dan, Liu, Dong‐Sheng
Format: Article
Language:English
Subjects:
3-Chloro-2-hydroxypropyltrimethyl Ammonium chloride
Phase Transition
Semiconductor
Switchable Dielectric
Thermal Hysteresis
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Summary:A semiconducting organic‐inorganic hybrid compound [(C6H15ClNO)2CdBr4] (1), which displays excellent switchable dielectric, has been successfully synthesized. Systematic characterizations including variable‐temperature structural analyses, DSC, TG, variable‐temperature dielectric measurements, solid‐state UV/Vis diffuse reflectance and photoluminescence were performed. DSC curve shows a couple of reversible heat anomaly peaks at 363/322 K on the heating/cooling process with a very large thermal hysteresis of ∼41 K, indicating the first‐order type of phase transition. Obvious dielectric switching occurs at about 364 K and 314 K also with a large thermal hysteresis of ∼50 K in the heating and cooling process, respectively. The large phase transition thermal hysteresis makes 1 a potential latent heat based thermal energy storage materials which can maintain the system over a wide temperature range. Variable‐temperature structural analyses show that the rotating or orientating movement of anion clusters is the mainly attribution for the phase transition of 1. A semiconducting organic‐inorganic hybrid metal halide [(C6H15ClNO)2CdBr4] exhibits switchable dielectric and a large phase transition thermal hysteresis of ∼50 K due to temperature‐triggered rotating or orientating movement of anion clusters.
ISSN:2365-6549
2365-6549
DOI:10.1002/slct.201900598