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Facile Control of Ferroelectricity Driven by Ingenious Interaction Engineering
Small ( IF 13.0 ) Pub Date : 2023-04-22 , DOI: 10.1002/smll.202301364 Jun-Yi Li 1 , Tie Zhang 1 , Meng-Meng Lun 1 , Yi Zhang 1, 2 , Li-Zhuang Chen 3 , Da-Wei Fu 2
Small ( IF 13.0 ) Pub Date : 2023-04-22 , DOI: 10.1002/smll.202301364 Jun-Yi Li 1 , Tie Zhang 1 , Meng-Meng Lun 1 , Yi Zhang 1, 2 , Li-Zhuang Chen 3 , Da-Wei Fu 2
Affiliation
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Construction of ferroelectric and optimization of macroscopic polarization has attracted tremendous attention for next generation light weight and flexible devices, which brings fundamental vitality for molecular ferroelectrics. However, effective molecular tailoring toward cations makes ferroelectric synthesis and modification relatively elaborate. Here, the study proposes a facile method to realize triggering and optimization of ferroelectricity. The experimental and theoretical investigation reveals that orientation and alignment of polar cations, dominated factors in molecular ferroelectrics, can be controlled by easily processed anionic modification. In one respect, ferroelectricity is induced by strengthened intermolecular interaction. Moreover, ≈50% of microscopic polarization enhancement (from 8.07 to 11.68 µC cm−2) and doubling of equivalent polarization direction (from 4 to 8) are realized in resultant ferroelectric FEtQ2ZnBrI3 (FEQZBI, FEtQ = N-fluoroethyl-quinuclidine). The work offers a totally novel platform for control of ferroelectricity in organic–inorganic hybrid ferroelectrics and a deep insight of structure–property correlations.
中文翻译：
巧妙的交互工程驱动铁电的轻松控制
铁电体的构建和宏观极化的优化引起了下一代轻质柔性器件的极大关注，这为分子铁电体带来了根本性的活力。然而，针对阳离子的有效分子定制使得铁电合成和修饰相对复杂。在这里，研究提出了一种实现铁电性触发和优化的简便方法。实验和理论研究表明，极性阳离子的取向和排列是分子铁电体中的主导因素，可以通过易于加工的阴离子改性来控制。一方面，铁电性是由增强的分子间相互作用引起的。此外，在所得铁电FEtQ2ZnBrI 3 (FEQZBI，FEtQ = N-氟乙基-奎宁环)中实现了约50%的微观极化增强(从8.07到11.68 µC cm -2 )和等效极化方向加倍(从4到8)。这项工作为控制有机-无机杂化铁电体中的铁电性提供了一个全新的平台，并对结构-性能相关性有了深入的了解。
更新日期：2023-04-22
中文翻译：
巧妙的交互工程驱动铁电的轻松控制
铁电体的构建和宏观极化的优化引起了下一代轻质柔性器件的极大关注，这为分子铁电体带来了根本性的活力。然而，针对阳离子的有效分子定制使得铁电合成和修饰相对复杂。在这里，研究提出了一种实现铁电性触发和优化的简便方法。实验和理论研究表明，极性阳离子的取向和排列是分子铁电体中的主导因素，可以通过易于加工的阴离子改性来控制。一方面，铁电性是由增强的分子间相互作用引起的。此外，在所得铁电FEtQ2ZnBrI 3 (FEQZBI，FEtQ = N-氟乙基-奎宁环)中实现了约50%的微观极化增强(从8.07到11.68 µC cm -2 )和等效极化方向加倍(从4到8)。这项工作为控制有机-无机杂化铁电体中的铁电性提供了一个全新的平台，并对结构-性能相关性有了深入的了解。
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