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Tanklike Metal-Organic Framework Filled with Perchloric Acid and Its Dielectric-Ferroelectric Properties

机译:高氯酸填充的罐状金属有机骨架及其介电-铁电性质

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摘要

Hydrothermal reaction of (L)-N-(2-cyano-benzyl)-(S)-proline with NaN3 and Zn(ClO4)(2) as a Lewis acid catalyst and H2O as a solvent gave [[Zn(TBPR)subset of 0.25(HClO4)](0.25HClO(4))}(n) (1) (TBPR = (S)-N-2-tetrazoylbenzylproline), an unique homochiral one-dimensional cage- or tanklike metal-organic framework (MOF) in which the cage or tank is filled with free perchloric acid. Permittivity property measurements reveal that 1 exhibits a high dielectric loss, which suggests it could be a potentially useful material for dielectric heating (such as electrocaloric effect), while ferroelectric property measurements show a possible hysteresis loop with a large remnant polarization (P-r = 1.8 mu C/cm(2)) and a lower closing mouth route.
机译:(L)-N-(2-氰基苄基)-(S)-脯氨酸与NaN3和作为路易斯酸催化剂的Zn(ClO4)(2)和作为溶剂的H2O进行水热反应得到[[Zn(TBPR)] (0.25)(HClO4)](0.25HClO(4))}(n)(1)(TBPR =(S)-N-2-四唑基苄基脯氨酸),一种独特的手性一维笼状或罐状金属有机骨架(MOF ),其中笼子或水箱中充满了游离的高氯酸。介电常数的测量结果表明1表现出高的介电损耗,这表明它可能是介电加热的潜在有用材料(例如电热效应),而铁电特性的测量则显示出可能的磁滞回线和大的残余极化(Pr = 1.8μm)。 C / cm(2))和较低的闭合嘴巴路线。

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