loading page

Molecular Ferroelastic Induced by Mono-/double-protonating Strategy
  • +4
  • Jia-Qi Luo,
  • Meng-Meng Lun,
  • Qiang-Qiang Jia,
  • Zhi-Jie Wang,
  • Hai-Feng Lu,
  • Yi Zhang,
  • Da-Wei Fu
Jia-Qi Luo
Zhejiang Normal University
Author Profile
Meng-Meng Lun
Southeast University
Author Profile
Qiang-Qiang Jia
Zhejiang Normal University
Author Profile
Zhi-Jie Wang
Southeast University
Author Profile
Hai-Feng Lu
Zhejiang Normal University
Author Profile
Yi Zhang
Zhejiang Normal University
Author Profile
Da-Wei Fu
Southeast Univ

Corresponding Author:dawei@seu.edu.cn

Author Profile

Abstract

Molecular ferroelastic with the natural features of mechanical flexibility and switchable spontaneous strain have attracted widespread attention in the scientific community due to their potential applications in tunable gratings, flexible memorizers, strain sensors, and intelligent actuators. However, most designs of molecular ferroelastics remain in the stage of blind exploration, posing a challenge to achieve a functional ferroelastic more effectively. Herein, we have successfully obtained a molecular ferroelastic, [Me2NH(CH2)2NH3](ReO4)2 (Me2NH(CH2)2NH3 = N,N-dimethylethylenediammonium), under the guidance of the mono-/double-protonating strategy. The double-protonated [Me2NH(CH2)2NH3](ReO4)2 undergoes a paraelastic-ferroelastic phase transition with the Aizu notation of 2/mF-1 at 322 K. Meanwhile, the theoretical calculation and experimental measurement simultaneously show that [Me2NH(CH2)2NH3](ReO4)2 possesses good mechanical flexibility, because its elastic modulus (E) of 8.26 GPa and hardness (H) of 0.45 GPa is smaller than the average value of organic crystals (E of 12.05 GPa and H of 0.5 GPa), which makes it promising to apply in wearable pressure sensors, implantable medical sensors, high-precision tuners, etc. This work further enriches the molecular ferroelastic family and demonstrates that mono-/double-protonation is one of the effective molecular modification strategies for designing ferroelastics.
Submitted to Chinese Journal of Chemistry
29 Jan 2024Reviewer(s) Assigned
20 Feb 2024Review(s) Completed, Editorial Evaluation Pending
22 Feb 2024Editorial Decision: Revise Minor
29 Feb 20241st Revision Received
01 Mar 2024Submission Checks Completed
01 Mar 2024Assigned to Editor
01 Mar 2024Review(s) Completed, Editorial Evaluation Pending
04 Mar 2024Reviewer(s) Assigned