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 i...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 T_(c)(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(ε’HTP/ε’LTP>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.展开更多
基金support from the National Natural Science Foundation of China(Grant No.22175079)support from National Natural Science Foundation of China(Grant No.22205087)+3 种基金Open Project Program of Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry,Jiangxi University of Science and Technology,(Grant No.20212BCD42018)Science and Technology Project of Jiangxi Provincial Department of Education(GJJ210812)support from National Natural Science Foundation of China(Grant No.21875093 and 22275075)Natural Science Foundation of Jiangxi Province(Grant No.20204BCJ22015 and 20202ACBL203001).
文摘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 T_(c)(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(ε’HTP/ε’LTP>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.
