Issue 17, 2023

Fast rotating dipole array inducing large dielectric response in a Ruddlesden–Popper hybrid perovskite ferroelastic

Abstract

Dynamic functional materials have attracted increasing interest owing to their broad potential applications in the field of flexible smart. Molecular rotors are a good platform to achieve functionality because of the intrinsic movement of the internal components. Herein, we report a two-dimensional (2D) Ruddlesden–Popper (RP) type hybrid perovskite ferroelastic (TFCA)2CdCl4 (1; TFCA = 2-fluoro-1-amino-pyrrolidium) showing Tc (402 K) and spontaneous strain (0.071). Impressively, the rapid rotating motions of the polar rotors lead to the fast reorientation of the dipoles resulting in a large dielectric response. The switching on–off ratio of dielectric anomaly is more than 100 (εHTP/εLTP > 100) at a high-frequency electric field (1 MHz). This study reveals that the 2D RP hybrid perovskite molecular rotor platform provides a new avenue to explore dynamic functional materials.

Graphical abstract: Fast rotating dipole array inducing large dielectric response in a Ruddlesden–Popper hybrid perovskite ferroelastic

Supplementary files

Article information

Article type
Research Article
Submitted
30 May 2023
Accepted
21 Tem 2023
First published
22 Tem 2023

Inorg. Chem. Front., 2023,10, 5082-5088

Fast rotating dipole array inducing large dielectric response in a Ruddlesden–Popper hybrid perovskite ferroelastic

W. Luo, N. Wang, H. Li, Z. Xu, Y. Feng, X. Fu, C. Shi, H. Ye and L. Miao, Inorg. Chem. Front., 2023, 10, 5082 DOI: 10.1039/D3QI01000G

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