Long-Range Ferroelectric Order Regulated by Cl–Cl Halogen Bonding in a 1D Ru-Based Hybrid Double Perovskite

IF 3.4 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Crystal Growth & Design Pub Date : 2025-02-23 DOI:10.1021/acs.cgd.5c00060

Ze-Jiang Xu, Hua-Kai Li, Mei-Ling Ren, Liang-Han Shen, Xiang Zhang, Zi-Ao Qiu, Chao Shi, Li-De Yu*, Na Wang*, Heng-Yun Ye* and Le-Ping Miao*,

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Abstract

Long-range order of electric dipoles means important physical properties such as ferroelectricity or antiferroelectricity, making materials have broad applications in information storage, sensors, switches, and optical electric devices. However, the orientation control of electric dipoles remains a great challenge on a molecular/ion level. Herein, we report the realization of ferroelectric order via Cl–Cl halogen-bond interactions in hybrid double perovskite [CH₂ClN(CH₃)₃]₂NaRuCl₆ (TCNRC) derived from [(CH₃)₄N]₂NaRuCl₆ (TNRC) for the first time. TCNRC shows spontaneous polarization (P_s = 2.67 μC cm^–2) and piezoelectricity (d₃₃ = 4 pC N^1–) with a Curie temperature (T_c) of 320 K. This study reveals the important role of halogen-bonding interactions to form ferroelectric orders and provides new insights into the molecular level regulatory polarity in molecular ferroelectric systems.

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一维钌基杂化双钙钛矿中Cl-Cl卤素键合调控的长程铁电序

电偶极子的长程序意味着铁电性或反铁电性等重要的物理性质，使得材料在信息存储、传感器、开关、光电器件等方面有着广泛的应用。然而，在分子/离子水平上，电偶极子的取向控制仍然是一个巨大的挑战。本文首次报道了由[(CH3)4N]2NaRuCl6 （TNRC）衍生而来的杂化双钙钛矿[CH2ClN(CH3)3]2NaRuCl6 （TCNRC）通过Cl-Cl卤素键相互作用实现铁电有序。TCNRC在居里温度（Tc）为320 K时表现出自发极化（Ps = 2.67 μC cm-2）和压电性（d33 = 4 pC N1 -）。该研究揭示了卤素键相互作用对铁电序形成的重要作用，并为分子铁电系统的分子水平调控极性提供了新的见解。

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产品信息

阿拉丁

[N(CH3)4]Cl

来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.