التفاصيل البيبلوغرافية
| العنوان: |
Hydrogen‐Bonded Engineering Enhancing Phase Transition Temperature in Molecular Perovskite Ferroelastic. |
| المؤلفون: |
Zhang, Tie, Ding, Kun, Li, Jun‐Yi, Du, Guo‐Wei, Chu, Lu‐Lu, Zhang, Yi, Fu, Da‐Wei |
| المصدر: |
Chinese Journal of Chemistry; Jul2022, Vol. 40 Issue 13, p1559-1565, 7p |
| مصطلحات موضوعية: |
PHASE transitions, TRANSITION temperature, FERROELECTRIC materials, INTERMOLECULAR forces, PEROVSKITE |
| مستخلص: |
Comprehensive Summary: The broad operating temperature range is sought for molecular ferroic materials who are expected to be applied to flexible and electronic materials. Hydrogen bonds, an effective force between molecules, are important to regulate the molecule structure and their condition, helping a higher temperature range for ferroic materials. Here, we report a molecular perovskite ferroelastic (Me‐Hdabco)Rb[BF4]3 (Me‐Hdabco = N‐methyldabconium) which shows high temperature (T1 = 322.5 K and T2 = 381 K) ferroelastic phase transitions. The ferroelastic phase transition temperature range of (Me‐Hdabco)Rb[BF4]3 is significantly increased by 71 K compared with [Meda‐bco‐F]Rb[BF4]3 (Medabco‐F = 1‐fluoro‐4‐methyl‐1,4‐diazoniabicyclo[2.2.2]octane). Structural analysis and thermal analysis demonstrate the ferroelastic phase transition is mainly attributed to dynamic cations order and disorder transformation. Therefore, new hydrogen bonds generated between cations and the Rb8[BF4]12 frame increase their intermolecular force, which is beneficial to improving the phase transition temperature. This finding has an important impact on the utilization of weak interaction forces to design and optimize functional materials. [ABSTRACT FROM AUTHOR] |
|
Copyright of Chinese Journal of Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
