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Observation of Transition from Ferroelasticity to Ferroelectricity by Solvent Selective Effect in Anilinium Bromide
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-01-21 , DOI: 10.1002/anie.202015219 Da-Wei Fu 1 , Ji-Xing Gao 2 , Pei-Zhi Huang 2 , Rui-Ying Ren 2 , Ting Shao 2 , Li-Jun Han 2 , Jia Liu 3 , Jun-Miao Gong 2
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-01-21 , DOI: 10.1002/anie.202015219 Da-Wei Fu 1 , Ji-Xing Gao 2 , Pei-Zhi Huang 2 , Rui-Ying Ren 2 , Ting Shao 2 , Li-Jun Han 2 , Jia Liu 3 , Jun-Miao Gong 2
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Organic ferroelectrics are highly desirable for their light weight, mechanical flexibility and biocompatibility. However, the rational design of organic ferroelectrics has always faced great challenges. Anilinium bromide (AB) has two structures reported in the Cambridge Crystallographic Data Centre, which might be an mmmF2/m type ferroelastic (AB‐1). When we studied its ferroelasticity, we were surprised to discover that there was another crystal (AB‐2) in H2O besides this one, and they were very difficult to separate. By changing the solvent, we found that AB‐1 crystals could be formed in ethanol, where ferroelastic domains were visualized by polarized light microscopy, and AB‐2 crystals could be obtained from various crystallization solvents of methanol, isopropanol, N‐butanol, acetonitrile, dimethyl sulfoxide, and N,N‐dimethylformamide, which undergo a ferroelectric phase transition with mm2Fm, showing clear ferroelectricity in two phases. To our knowledge, the regulation of ferroelasticity to ferroelectricity by solvent selective effect is unprecedented in the field of ferroelectrics. This work reveals the important role of solvent effect in organic ferroelectrics.
中文翻译：
溴化苯胺中溶剂选择性效应从铁弹性向铁电转变的观察
有机铁电材料因其重量轻，机械柔韧性和生物相容性而非常需要。然而，有机铁电体的合理设计一直面临着巨大的挑战。剑桥结晶数据中心报道了溴化苯胺（AB）具有两种结构，可能是mmm F2 / m型铁弹性体（AB-1）。当我们研究其铁弹性时，我们惊讶地发现H 2中还有另一个晶体（AB-2）除此以外，他们很难分开。通过改变溶剂，我们发现AB-1晶体可以在乙醇中形成，其中通过偏振光显微镜可以看到铁弹性域，而AB-2晶体可以从甲醇，异丙醇，N-丁醇，乙腈的各种结晶溶剂中获得。，二甲基亚砜和N，N-二甲基甲酰胺，它们发生铁电相变，mm 2F m，在两个阶段中显示出清晰的铁电。据我们所知，在铁电领域中，通过溶剂选择性作用将铁弹性调节为铁电是前所未有的。这项工作揭示了溶剂作用在有机铁电中的重要作用。
更新日期：2021-03-30
中文翻译：
溴化苯胺中溶剂选择性效应从铁弹性向铁电转变的观察
有机铁电材料因其重量轻，机械柔韧性和生物相容性而非常需要。然而，有机铁电体的合理设计一直面临着巨大的挑战。剑桥结晶数据中心报道了溴化苯胺（AB）具有两种结构，可能是mmm F2 / m型铁弹性体（AB-1）。当我们研究其铁弹性时，我们惊讶地发现H 2中还有另一个晶体（AB-2）除此以外，他们很难分开。通过改变溶剂，我们发现AB-1晶体可以在乙醇中形成，其中通过偏振光显微镜可以看到铁弹性域，而AB-2晶体可以从甲醇，异丙醇，N-丁醇，乙腈的各种结晶溶剂中获得。，二甲基亚砜和N，N-二甲基甲酰胺，它们发生铁电相变，mm 2F m，在两个阶段中显示出清晰的铁电。据我们所知，在铁电领域中，通过溶剂选择性作用将铁弹性调节为铁电是前所未有的。这项工作揭示了溶剂作用在有机铁电中的重要作用。
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