A facile and efficient strategy for the design of ferroelectric and giant dielectric hybrids via intercalating polar molecules into noncentrosymmetric layered inorganic compounds

A facile and efficient strategy for the design of ferroelectric and giant dielectric hybrids via intercalating polar molecules into noncentrosymmetric layered inorganic compounds
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通过将极性分子插入非中心对称层状无机化合物来设计铁电和巨型介电杂化物的简便有效的策略

DOI:
10.1039/c1jm13115j
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发表时间:
2012
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--
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考虑到插层反应,熵和体积减小的过程,可以通过增加反应器中的压力来促进,我们开发了一种简单有效的策略,通过高压釜在温和的反应条件下快速制备DMSO和尿素插层高岭土,将反应时间从几天缩短到6 h。高岭石是一种非中心对称的层状无机基质,将极性分子二甲基亚砜或尿素插入高岭石层间,可以制备出杂化铁电或巨介电材料。我们的研究结果将有助于设计和制备具有重要技术意义的铁电性和巨介电性能的新型杂化功能材料。
Taking into account that an intercalation reaction, an entropy and volume reducing process, can be promoted by increased pressure in a reactor, we developed a facile and efficient strategy for rapid preparation of DMSO and urea intercalated Kaolinites under mild reaction conditions by means of an autoclave, reducing the reaction time from several days to 6 h. The Kaolinite is a noncentrosymmetric layered inorganic host, the polar DMSO or urea molecules were inserted into the inter-layers of Kaolinite to create the hybrid ferroelectric or giant dielectric materials. Our results will shed light on the design and preparation of new hybrid functional materials with technologically important ferroelectricity and giant dielectric properties.
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