Observation of Transition from Ferroelasticity to Ferroelectricity by Solvent Selective Effect in Anilinium Bromide
| Autor: | Da-Wei Fu, Li-Jun Han, Ting Shao, Jia Liu, Rui-Ying Ren, Jun-Miao Gong, Ji-Xing Gao, Pei-Zhi Huang |
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| Rok vydání: | 2021 |
| Předmět: |
Polarized light microscopy
Ferroelasticity Materials science 010405 organic chemistry General Chemistry General Medicine 010402 general chemistry 01 natural sciences Ferroelectricity Catalysis 0104 chemical sciences Crystal chemistry.chemical_compound Crystallography chemistry Bromide Dimethylformamide Solvent effects Acetonitrile |
| Zdroj: | Angewandte Chemie (International ed. in English). 60(15) |
| ISSN: | 1521-3773 |
| Popis: | Organic ferroelectrics are highly desirable for their lightweight, mechanical flexibility and biocompatibility. However, the rational design of organic ferroelectrics has always been faced with great challenges. Anilinium bromide (AB) has two structures reported in the Cambridge Crystallographic Data Centre, which might be an mmm F2/ m type ferroelastic (AB-1). When we studied its ferroelasticity, we were surprised to discover that there was another crystal (AB-2) in H 2 O 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 crystallisation solvents of methanol, isopropanol, N -butanol, acetonitrile, dimethyl sulphoxide, and N , N -dimethylformamide, which undergo a ferroelectric phase transition with mm 2F m , 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 offers an efficient exploratory path to enriching the family of organic ferroelectrics, and should inspire further exploration of the interplay between solvent effect and physical properties. |
| Databáze: | OpenAIRE |
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