1
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Pan Q, Gu ZX, Zhou RJ, Feng ZJ, Xiong YA, Sha TT, You YM, Xiong RG. The past 10 years of molecular ferroelectrics: structures, design, and properties. Chem Soc Rev 2024; 53:5781-5861. [PMID: 38690681 DOI: 10.1039/d3cs00262d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Ferroelectricity, which has diverse important applications such as memory elements, capacitors, and sensors, was first discovered in a molecular compound, Rochelle salt, in 1920 by Valasek. Owing to their superiorities of lightweight, biocompatibility, structural tunability, mechanical flexibility, etc., the past decade has witnessed the renaissance of molecular ferroelectrics as promising complementary materials to commercial inorganic ferroelectrics. Thus, on the 100th anniversary of ferroelectricity, it is an opportune time to look into the future, specifically into how to push the boundaries of material design in molecular ferroelectric systems and finally overcome the hurdles to their commercialization. Herein, we present a comprehensive and accessible review of the appealing development of molecular ferroelectrics over the past 10 years, with an emphasis on their structural diversity, chemical design, exceptional properties, and potential applications. We believe that it will inspire intense, combined research efforts to enrich the family of high-performance molecular ferroelectrics and attract widespread interest from physicists and chemists to better understand the structure-function relationships governing improved applied functional device engineering.
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Affiliation(s)
- Qiang Pan
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
| | - Zhu-Xiao Gu
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, P. R. China.
| | - Ru-Jie Zhou
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
| | - Zi-Jie Feng
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
| | - Yu-An Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
| | - Tai-Ting Sha
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
| | - Yu-Meng You
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
| | - Ren-Gen Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.
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2
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Cao X, Zhou R, Xiong Y, Du G, Feng Z, Pan Q, Chen Y, Ji H, Ni Z, Lu J, Hu H, You Y. Volume-Confined Fabrication of Large-Scale Single-Crystalline Molecular Ferroelectric Thin Films and Their Applications in 2D Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305016. [PMID: 38037482 PMCID: PMC10811469 DOI: 10.1002/advs.202305016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/23/2023] [Indexed: 12/02/2023]
Abstract
With outstanding advantages of chemical synthesis, structural diversity, and mechanical flexibility, molecular ferroelectrics have attracted increasing attention, demonstrating themselves as promising candidates for next-generation wearable electronics and flexible devices in the film form. However, it remains a challenge to grow high-quality thin films of molecular ferroelectrics. To address the above issue, a volume-confined method is utilized to achieve ultrasmooth single-crystal molecular ferroelectric thin films at the sub-centimeter scale, with the thickness controlled in the range of 100-1000 nm. More importantly, the preparation method is applicable to most molecular ferroelectrics and has no dependency on substrates, showing excellent reproducibility and universality. To demonstrate the application potential, two-dimensional (2D) transitional metal dichalcogenide semiconductor/molecular ferroelectric heterostructures are prepared and investigated by optical spectroscopic method, proving the possibility of integrating molecular ferroelectrics with 2D layered materials. These results may unlock the potential for preparing and developing high-performance devices based on molecular ferroelectric thin films.
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Affiliation(s)
- Xiao‐Xing Cao
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Ru‐Jie Zhou
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Yu‐An Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Guo‐Wei Du
- Key Laboratory of Quantum Materials and Devices of Ministry of EducationSchool of PhysicsSoutheast UniversityNanjing211189People's Republic of China
| | - Zi‐Jie Feng
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Qiang Pan
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Yin‐Zhu Chen
- Key Laboratory of Quantum Materials and Devices of Ministry of EducationSchool of PhysicsSoutheast UniversityNanjing211189People's Republic of China
| | - Hao‐Ran Ji
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Zhenhua Ni
- Key Laboratory of Quantum Materials and Devices of Ministry of EducationSchool of PhysicsSoutheast UniversityNanjing211189People's Republic of China
| | - Junpeng Lu
- Key Laboratory of Quantum Materials and Devices of Ministry of EducationSchool of PhysicsSoutheast UniversityNanjing211189People's Republic of China
| | - Huihui Hu
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
| | - Yu‐Meng You
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China
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3
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Li JY, Zhang T, Lun MM, Zhang Y, Chen LZ, Fu DW. Facile Control of Ferroelectricity Driven by Ingenious Interaction Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301364. [PMID: 37086107 DOI: 10.1002/smll.202301364] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/04/2023] [Indexed: 05/03/2023]
Abstract
Construction of ferroelectric and optimization of macroscopic polarization has attracted tremendous attention for next generation light weight and flexible devices, which brings fundamental vitality for molecular ferroelectrics. However, effective molecular tailoring toward cations makes ferroelectric synthesis and modification relatively elaborate. Here, the study proposes a facile method to realize triggering and optimization of ferroelectricity. The experimental and theoretical investigation reveals that orientation and alignment of polar cations, dominated factors in molecular ferroelectrics, can be controlled by easily processed anionic modification. In one respect, ferroelectricity is induced by strengthened intermolecular interaction. Moreover, ≈50% of microscopic polarization enhancement (from 8.07 to 11.68 µC cm-2 ) and doubling of equivalent polarization direction (from 4 to 8) are realized in resultant ferroelectric FEtQ2ZnBrI3 (FEQZBI, FEtQ = N-fluoroethyl-quinuclidine). The work offers a totally novel platform for control of ferroelectricity in organic-inorganic hybrid ferroelectrics and a deep insight of structure-property correlations.
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Affiliation(s)
- Jun-Yi Li
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, P. R. China
| | - Tie Zhang
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, P. R. China
| | - Meng-Meng Lun
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, P. R. China
| | - Yi Zhang
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, P. R. China
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, P. R. China
| | - Li-Zhuang Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, P. R. China
| | - Da-Wei Fu
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, P. R. China
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4
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Xu M, Sheng C, Zhang Q, Zhou X, Tian B, Chen L, Cai Y, Li J, Wang J, Xie Y, Qiu X, Wang W, Xiong S, Cong C, Qiu ZJ, Liu R, Hu L. Large-Area Flexible Memory Arrays of Oriented Molecular Ferroelectric Single Crystals with Nearly Saturated Polarization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203882. [PMID: 36168115 DOI: 10.1002/smll.202203882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/23/2022] [Indexed: 06/16/2023]
Abstract
Molecular ferroelectrics (MFs) have been proven to demonstrate excellent properties even comparable to those of inorganic counterparts usually with heavy metals. However, the validation of their device applications is still at the infant stage. The polycrystalline feature of conventionally obtained MF films, the patterning challenges for microelectronics and the brittleness of crystalline films significantly hinder their development for organic integrated circuits, as well as emerging flexible electronics. Here, a large-area flexible memory array is demonstrated of oriented molecular ferroelectric single crystals (MFSCs) with nearly saturated polarization. Highly-uniform MFSC arrays are prepared on large-scale substrates including Si wafers and flexible substrates using an asymmetric-wetting and microgroove-assisted coating (AWMAC) strategy. Resultant flexible memory arrays exhibit excellent nonvolatile memory properties with a low-operating voltage of <5 V, i.e., nearly saturated ferroelectric polarization (6.5 µC cm-2 ), and long bending endurance (>103 ) under various bending radii. These results may open an avenue for scalable flexible MF electronics with high performance.
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Affiliation(s)
- Mingsheng Xu
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Chenxu Sheng
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Qiuyi Zhang
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Xiaojie Zhou
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Bobo Tian
- Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Luqiu Chen
- Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Yichen Cai
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Jianping Li
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Jiao Wang
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Yongfa Xie
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China
| | - Xinxia Qiu
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Wenchong Wang
- Physikalisches Institut and Center for Nanotechnology, Universität Münster, Wilhelm-Klemm-Straße 10, 48149, Münster, Germany
| | - Shisheng Xiong
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Chunxiao Cong
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
- Yiwu Research Institute of Fudan University, Yiwu City, Zhejiang, 322000, China
| | - Zhi-Jun Qiu
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Ran Liu
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
| | - Laigui Hu
- School of Information Science and Technology, Fudan University, Shanghai, 200433, P. R. China
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5
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Han S, Ma Y, Hua L, Tang L, Wang B, Sun Z, Luo J. Soft Multiaxial Molecular Ferroelectric Thin Films with Self-Powered Broadband Photodetection. J Am Chem Soc 2022; 144:20315-20322. [DOI: 10.1021/jacs.2c07892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shiguo Han
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
| | - Yu Ma
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
| | - Lina Hua
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
| | - Liwei Tang
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
| | - Beibei Wang
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
| | - Zhihua Sun
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
| | - Junhua Luo
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
- School of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350002, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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6
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Han K, Ye X, Li B, Wei Z, Wei J, Wang P, Cai H. Organic–Inorganic Hybrid Compound [H 2-1,5-Diazabicyclo[3.3.0]octane]ZnBr 4 with Reverse Symmetry Breaking Shows a Switchable Dielectric Anomaly and Robust Second Harmonic Generation Effect. Inorg Chem 2022; 61:11859-11865. [DOI: 10.1021/acs.inorgchem.2c01609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keke Han
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Xing Ye
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Bo Li
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Zhenhong Wei
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Jing Wei
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Pan Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Hu Cai
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China
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7
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Shao T, Ren RY, Huang PZ, Ni HF, Su CY, Fu DW, Xie LY, Lu HF. Metal ion modulation triggers dielectric double switching and green fluorescence in A 2MX 4-type compounds. Dalton Trans 2022; 51:2005-2011. [PMID: 35029614 DOI: 10.1039/d1dt03948b] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Multifunctional switching materials show great potential for applications in sensors, smart switches, and other fields due to their ability to integrate different physical channels in one single device. However, multifunctional responsive materials with multiple switching and luminescence properties have rarely been reported. Here, we report three organic-inorganic hybrids: [TMAA]2[CoCl4] (compound 1), [TMAA]2[CdBr4] (compound 2) and [TMAA]2[MnCl4] (compound 3). Compound 1 and compound 2 undergo two reversible phase transitions at high temperature (328.95/359.25 K and 350.45/393.15 K, respectively). Since the inorganic skeleton has a strong influence on the luminescence properties of such structured substances, Cd and Co were replaced with Mn, after which compound 3 was obtained as expected. The above strategy triggered bright green luminescence with a quantum yield of 35.19%, and significantly increased the phase transition temperature of compound 3 to above 400 K. The above results show that the regulation of the inorganic skeleton provides a new strategy for researchers to develop dual phase change/luminous materials.
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Affiliation(s)
- Ting Shao
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
| | - Rui-Ying Ren
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
| | - Pei-Zhi Huang
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
| | - Hao-Fei Ni
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
| | - Chang-Yuan Su
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P.R. China
| | - Da-Wei Fu
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
| | - Li-Yan Xie
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
| | - Hai-Feng Lu
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
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8
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Shao T, Gong JM, Liu J, Han LJ, Chen M, Jia Q, Fu DW, Lu HF. 2D lead-free organic–inorganic hybrid exhibiting dielectric and structural phase transition at higher temperatures. CrystEngComm 2022. [DOI: 10.1039/d2ce00541g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel switchable molecular dielectric material [3-3-difluorocyclobutylammonium]2CdCl4 was synthesized. It shows a reversible phase transition at 353.95 K and rapid switching and reversibility between high and low dielectric states for several cycles.
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Affiliation(s)
- Ting Shao
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
| | - Jun Miao Gong
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
| | - Jia Liu
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
| | - Li Jun Han
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
| | - Ming Chen
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P.R. China
| | - Qiangqiang Jia
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
| | - Da Wei Fu
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
| | - Hai-Feng Lu
- Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China
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9
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Li PF, Ai Y, Zeng YL, Liu JC, Xu ZK, Wang ZX. Highest-Tc single-component homochiral organic ferroelectrics. Chem Sci 2022; 13:657-664. [PMID: 35173929 PMCID: PMC8768840 DOI: 10.1039/d1sc04322f] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 11/15/2021] [Indexed: 01/10/2023] Open
Abstract
Organic single-component ferroelectrics with low molecular mass have drawn great attention for application in organic electronics. However, the discovery of high-Tc single-component organic ferroelectrics has been very scarce. Herein, we report a pair of homochiral single-component organic ferroelectrics (R)-10-camphorsulfonylimine and (S)-10-camphorsulfonylimine under the guidance of ferroelectric chiral chemistry. They crystallize in the chiral–polar space group P21, and their mirror image relations have been identified using vibrational circular dichroism spectra. They both exhibit 422F2 multiaxial ferroelectricity with Tc as high as 429 K. Besides, they possess superior acoustic impedance characteristics with a value of 2.45 × 106 kg s−1 m−2, lower than that of PVDF. To our knowledge, enantiomeric (R and S)-10-camphorsulfonylimine show the highest Tc among the known organic single-component ferroelectrics and low acoustic impedance well matching with that of bodily tissues. This work promotes the development of high-performance organic single-component ferroelectrics and is of great inspiration to explore their application in next-generation flexible smart devices. A pair of enantiomeric organic ferroelectrics (R and S)-10-camphorsulfonylimine show the highest Tc among the known single-component organic ferroelectrics.![]()
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Affiliation(s)
- Peng-Fei Li
- Ordered Matter Science Research Center, Nanchang University, 330031, P. R. China
| | - Yong Ai
- Ordered Matter Science Research Center, Nanchang University, 330031, P. R. China
| | - Yu-Ling Zeng
- Ordered Matter Science Research Center, Nanchang University, 330031, P. R. China
| | - Jun-Chao Liu
- Ordered Matter Science Research Center, Nanchang University, 330031, P. R. China
| | - Zhe-Kun Xu
- Ordered Matter Science Research Center, Nanchang University, 330031, P. R. China
| | - Zhong-Xia Wang
- Ordered Matter Science Research Center, Nanchang University, 330031, P. R. China
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10
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Zhang ZY, Qin LL, Liu Y, Wang P, Hu HZ, Liu ZQ. Reversible structural phase transition and dielectric behaviour associated with the ordering-disordering of molecular rotation in an organic supramolecular solid. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Li YK, Lai YY, Ying TT, Han DC, Tan YH, Tang YZ, Du PK, Zhang H. A multifunctional molecular ferroelectric with chiral features, a high Curie temperature, large spontaneous polarization and photoluminescence: (C 9H 14N) 2CdBr 4. Chem Sci 2021; 12:13061-13067. [PMID: 34745536 PMCID: PMC8513930 DOI: 10.1039/d1sc03964d] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/05/2021] [Indexed: 11/23/2022] Open
Abstract
Low-dimensional chiral organic-inorganic hybrid metal halides have attracted a lot of attention in recent years due to their unique intrinsic properties, including having potential applications in optoelectronic and spintronic devices. However, low-dimensional chiral molecular ferroelectrics are very rare. In this paper, we report a novel zero-dimensional molecular ferroelectric (C9H14N)2CdBr4 (C9H14N+ = protonated 3-phenylpropylamine), which has obvious dielectric and thermal anomalies and shows a high Curie temperature at 395 K. It crystallizes in the P21 space group at room temperature, showing a strong CD signal, large spontaneous polarization (P s = 13.5 μC cm-2), and a clear ferroelectric domain. In addition, it also exhibits a flexible SHG response. The photoluminescence spectrum shows that 1 has broadband luminescence. At the same time, compound 1 has a wide band gap, which is mainly contributed to by the inorganic CdBr4 tetrahedron. The high tunability of low-dimensional chiral molecular ferroelectrics also opens up a way to explore multifunctional chiral materials.
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Affiliation(s)
- Yu-Kong Li
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Yuan-Yuan Lai
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Ting-Ting Ying
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Ding-Chong Han
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Yu-Hui Tan
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Yun-Zhi Tang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Peng-Kang Du
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
| | - Hao Zhang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi Province P. R. China
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12
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Rao W, Li M, You X, Wei Z, Zhang M, Wang L, Cai H. The Role of Fluorine-Substituted Positions on the Phase Transition in Organic-Inorganic Hybrid Perovskite Compounds. Inorg Chem 2021; 60:14706-14712. [PMID: 34546753 DOI: 10.1021/acs.inorgchem.1c01816] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although research on organic-inorganic hybrid perovskites (OIHPs) has grown exponentially in the past two decades, the high phase transition temperature of OIHP materials is still one of the insurmountable difficulties. Herein, a series of A2BX4 type OIHP materials [(2,n-DFBA)2PbCl4] (n = 3, for 1; n = 4, for 2; n = 5, for 3; n = 6, for 4) have been prepared by reactions of double-substituted difluorobenzylamine (difluorobenzylamine = DFBA) with lead chloride in concentrated HCl aqueous solution. It was found the OIHP compounds 1-3 proceed a switchable phase transition with phase transition temperatures (Tc) at 449 K (1), 462 K (2) and 500 K (3), higher than that of the parent compound [(BA)2PbCl4] (BA = benzylammonium) at 438 K, but compound 4 exhibits no phase transition. A crystal structure analysis elucidated that the organic template ligands DFBA lead in the inorganic part in compounds 1-3 to a two-dimensional (2D) perovskite structure, while that in compound 4 leads to a one-dimensional (1D) chain structure. The different double-substituted positions of fluorine atoms on benzylamine have important influences on the phase transition in compounds 1-4.
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Affiliation(s)
- Wenjun Rao
- College of Chemistry, Nanchang University, Nanchang city 330031, People's Republic of China
| | - Mingli Li
- College of Chemistry, Nanchang University, Nanchang city 330031, People's Republic of China
| | - Xiuli You
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
| | - Zhenhong Wei
- College of Chemistry, Nanchang University, Nanchang city 330031, People's Republic of China
| | - Mengxia Zhang
- College of Chemistry, Nanchang University, Nanchang city 330031, People's Republic of China
| | - Lingyu Wang
- College of Chemistry, Nanchang University, Nanchang city 330031, People's Republic of China
| | - Hu Cai
- College of Chemistry, Nanchang University, Nanchang city 330031, People's Republic of China
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13
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Shi Z, Fang Z, Wu J, Chen Y, Mi Q. Order-disorder transition of a rigid cage cation embedded in a cubic perovskite. Nat Commun 2021; 12:3548. [PMID: 34112786 PMCID: PMC8192939 DOI: 10.1038/s41467-021-23917-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/24/2021] [Indexed: 11/25/2022] Open
Abstract
The structure and properties of organic–inorganic hybrid perovskites are impacted by the order–disorder transition, whose driving forces from the organic cation and the inorganic framework cannot easily be disentangled. Herein, we report the design, synthesis and properties of a cage-in-framework perovskite AthMn(N3)3, where Ath+ is an organic cation 4-azatricyclo[2.2.1.02,6]heptanium. Ath+ features a rigid and spheroidal profile, such that its molecular reorientation does not alter the cubic lattice symmetry of the Mn(N3)3− host framework. This order–disorder transition is well characterized by NMR, crystallography, and calorimetry, and associated with the realignment of Ath+ dipole from antiferroelectric to paraelectric. As a result, an abrupt rise in the dielectric constant was observed during the transition. Our work introduces a family of perovskite structures and provides direct insights to the order–disorder transition of hybrid materials. In hybrid perovskites, the driving forces of an order–disorder transition that arise from the organic cation and inorganic framework cannot be easily untangled. Here, the authors introduce a cage-in-framework structure in which reorientation of the cage cation does not alter the cubic symmetry of the perovskite lattice.
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Affiliation(s)
- Zhifang Shi
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Zheng Fang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Jingshu Wu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yi Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Qixi Mi
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
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14
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Zhang HY, Chen XG, Tang YY, Liao WQ, Di FF, Mu X, Peng H, Xiong RG. PFM (piezoresponse force microscopy)-aided design for molecular ferroelectrics. Chem Soc Rev 2021; 50:8248-8278. [PMID: 34081064 DOI: 10.1039/c9cs00504h] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With prosperity, decay, and another spring, molecular ferroelectrics have passed a hundred years since Valasek first discovered ferroelectricity in the molecular compound Rochelle salt. Recently, the proposal of ferroelectrochemistry has injected new vigor into this century-old research field. It should be highlighted that piezoresponse force microscopy (PFM) technique, as a non-destructive imaging and manipulation method for ferroelectric domains at the nanoscale, can significantly speed up the design rate of molecular ferroelectrics as well as enhance the ferroelectric and piezoelectric performances relying on domain engineering. Herein, we provide a brief review of the contribution of the PFM technique toward assisting the design and performance optimization of molecular ferroelectrics. Relying on the relationship between ferroelectric domains and crystallography, together with other physical characteristics such as domain switching and piezoelectricity, we believe that the PFM technique can be effectively applied to assist the design of high-performance molecular ferroelectrics equipped with multifunctionality, and thereby facilitate their practical utilization in optics, electronics, magnetics, thermotics, and mechanics among others.
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Affiliation(s)
- Han-Yue Zhang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, P. R. China.
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15
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Li Y, Du Y, Huang CR, Peng H, Zeng YL, Liu JC, Liao WQ. Homochiral anionic modification toward the chemical design of organic enantiomeric ferroelectrics. Chem Commun (Camb) 2021; 57:5171-5174. [PMID: 33903863 DOI: 10.1039/d1cc01675j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The well-developed design strategy of molecular modification for assembling molecular ferroelectrics mainly focuses on the cations. Herein, by homochiral anionic modification of the non-ferroelectric (quinuclidinium)(HSO4), we designed high-temperature multiaxial organic enantiomeric ferroelectrics, (quinuclidinium)(l- and d-camphorsulfonate). This work paves a new road for precisely constructing excellent molecular ferroelectrics.
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Affiliation(s)
- Yibao Li
- Key Laboratory of Organo-Phamaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, People's Republic of China.
| | - Ye Du
- College of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China.
| | - Chao-Ran Huang
- Key Laboratory of Organo-Phamaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, People's Republic of China.
| | - Hang Peng
- College of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China.
| | - Yu-Ling Zeng
- College of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China.
| | - Jun-Chao Liu
- College of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China.
| | - Wei-Qiang Liao
- College of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China.
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16
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Lee J, Seol W, Anoop G, Samanta S, Unithrattil S, Ahn D, Kim W, Jung G, Jo J. Stabilization of Ferroelectric Phase in Highly Oriented Quinuclidinium Perrhenate (HQReO 4) Thin Films. MATERIALS 2021; 14:ma14092126. [PMID: 33922179 PMCID: PMC8122725 DOI: 10.3390/ma14092126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 11/16/2022]
Abstract
The low-temperature processability of molecular ferroelectric (FE) crystals makes them a potential alternative for perovskite oxide-based ferroelectric thin films. Quinuclidinium perrhenate (HQReO4) is one such molecular FE crystal that exhibits ferroelectricity when crystallized in an intermediate temperature phase (ITP). However, bulk HQReO4 crystals exhibit ferroelectricity only for a narrow temperature window (22 K), above and below which the polar phase transforms to a non-FE phase. The FE phase or ITP of HQReO4 should be stabilized in a much wider temperature range for practical applications. Here, to stabilize the FE phase (ITP) in a wider temperature range, highly oriented thin films of HQReO4 were prepared using a simple solution process. A slow evaporation method was adapted for drying the HQReO4 thin films to control the morphology and the temperature window. The temperature window of the intermediate temperature FE phase was successfully widened up to 35 K by merely varying the film drying temperature between 333 and 353 K. The strategy of stabilizing the FE phase in a wider temperature range can be adapted to other molecular FE materials to realize flexible electronic devices.
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Affiliation(s)
- Junyoung Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Woojun Seol
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Gopinathan Anoop
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Shibnath Samanta
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Sanjith Unithrattil
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Dante Ahn
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Woochul Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Gunyoung Jung
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - Jiyoung Jo
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
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17
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High-temperature dielectric switch and second harmonic generation integrated in a stimulus responsive material. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.02.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Tang YY, Xie Y, Ai Y, Liao WQ, Li PF, Nakamura T, Xiong RG. Organic Ferroelectric Vortex-Antivortex Domain Structure. J Am Chem Soc 2020; 142:21932-21937. [PMID: 33326208 DOI: 10.1021/jacs.0c11416] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Organic ferroelectrics are attracting tremendous interest because of their mechanical flexibility, ease of fabrication, and low acoustical impedance. Although great advances have been made in recent years, topological defects such as vortices remain relatively unexplored in the organic ferroelectric system. Here, from [quinuclidinium]ReO4 ([Q]ReO4), we applied the molecular design strategy of H/F substitution to successfully synthesize the organic ferroelectric [4-fluoroquinuclidinium]ReO4 ([4-F-Q]ReO4). Through H/F substitution, the Curie temperature and spontaneous polarization are respectively increased from 367 K and 5.83 μC/cm2 in [Q]ReO4 to 466 K and 11.37 μC/cm2 in [4-F-Q]ReO4. Moreover, under mechanical stress fields, three kinds of stripelike domains with various polarization directions emerge to form a windmill-like domain pattern in the thin film of [4-F-Q]ReO4, in which intriguing vortex-antivortex topological configurations can exist stably. This work provides an efficient strategy for optimizing the properties of organic ferroelectrics and exploring emergent phenomena.
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Affiliation(s)
- Yuan-Yuan Tang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China
| | - Yongfa Xie
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China
| | - Yong Ai
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China
| | - Wei-Qiang Liao
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China
| | - Peng-Fei Li
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China
| | - Takayoshi Nakamura
- Research Institute for Electronic Science, Hokkaido University, Kitaku, Sapporo, Hokkaido 001-0020, Japan
| | - Ren-Gen Xiong
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China
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19
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Tang YY, Xie Y, Zeng YL, Liu JC, He WH, Huang XQ, Xiong RG. Record Enhancement of Phase Transition Temperature Realized by H/F Substitution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2003530. [PMID: 32697371 DOI: 10.1002/adma.202003530] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/21/2020] [Indexed: 06/11/2023]
Abstract
A high transition temperature (Tc ) is essential for the practical application of ferroelectrics as electronic devices under extreme thermal conditions in the aerospace, automotive, and energy industries. In recent decades, the isotope effect and strain engineering are found to effectively modulate Tc ; however, these strategies are limited to certain systems. Developing simple, universal, and practical methods to improve Tc has become an imminent challenge for expanding the applications of ferroelectrics. Here, by adopting a molecular design strategy involving H/F substitution on an organic-inorganic hybrid perovskite (1-azabicyclo[2.2.1]heptane)CdCl3 at a Tc of 190 K, the successful synthesis of a multiaxial, ferroelectric hybrid perovskite (4-fluoro-1-azabicyclo[2.2.1]heptane)CdCl3 is reported, which demonstrates a large spontaneous polarization of 11.2 µC cm-2 (greater than that of polyvinylidene difluoride) and a Tc of 419 K (greater than that of BaTiO3 ). This temperature enhancement (229 K) is the largest reported for molecular ferroelectrics, far exceeding the reported enhancements induced by the isotope effect and other techniques. This pioneering technique provides an effective and universal method for improving Tc in ferroelectrics and represents an important step toward the development of high-performance ferroelectric technology.
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Affiliation(s)
- Yuan-Yuan Tang
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
| | - Yongfa Xie
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
| | - Yu-Ling Zeng
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
| | - Jun-Chao Liu
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
| | - Wen-Hui He
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
| | - Xue-Qin Huang
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
| | - Ren-Gen Xiong
- Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China
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20
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Liu HY, Zhang HY, Chen XG, Xiong RG. Molecular Design Principles for Ferroelectrics: Ferroelectrochemistry. J Am Chem Soc 2020; 142:15205-15218. [DOI: 10.1021/jacs.0c07055] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hui-Yu Liu
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Han-Yue Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Xiao-Gang Chen
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Ren-Gen Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
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21
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Liu M, Liang J, Xu X, Liu Z. An unusual high-frequency ferroelectric obtained via the post-synthetic modification of a metal-organic framework. Dalton Trans 2020; 49:10895-10900. [PMID: 32720661 DOI: 10.1039/d0dt02066d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Ferroelectrics as crucial functional materials have attracted much interest since ferroelectricity was discovered in 1920. Herein, an unusual high-frequency ferroelectric, (CH3)2NH·HCl@Cd-MOF, was successfully obtained through a dual-step synthetic methodology. A chiral porous Cd-MOF with a channel size of 6.8 × 6.8 Å was synthesized via self-assembly of chiral Schiff-base ligands and Cd2+ ions. Subsequently, polarizable (CH3)2NH·HCl was introduced into the channels of the Cd-MOF and hence the host-guest system (CH3)2NH·HCl@Cd-MOF was formed. The as-synthesized (CH3)2NH·HCl@Cd-MOF displays obvious ferroelectricity at a high frequency of 1 kHz. Such a high-frequency ferroelectric is extremely rare among MOF-based ferroelectric materials, and the high-frequency ferroelectricity means that (CH3)2NH·HCl@Cd-MOF has potential for use in ferroelectric memories. The results again demonstrate that post-synthetic modification is a promising approach for achieving rational and precise design of ferroelectric materials.
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Affiliation(s)
- Meiying Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P.R. China.
| | - Jingjing Liang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P.R. China.
| | - Xuebin Xu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P.R. China.
| | - Zhiliang Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P.R. China.
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22
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Wang ZX, Zhang H, Wang F, Cheng H, He WH, Liu YH, Huang XQ, Li PF. Superior Transverse Piezoelectricity in a Halide Perovskite Molecular Ferroelectric Thin Film. J Am Chem Soc 2020; 142:12857-12864. [PMID: 32602714 DOI: 10.1021/jacs.0c06064] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Piezoelectric materials with inherent mechanical-electric coupling effect are a crucial family of functional materials in high-end information technology. For practical applications, the transverse piezoelectric performance (d31 or d32) is mainly considered, because this parameter is a vitally important index to characterize the performance of piezoelectric thin films. However, the transverse piezoelectricity of the thin films as a key figure of merit is seldom mentioned in molecular ferroelectrics. Herein, we report that a new 1D halide perovskite ferroelectric N,N-dimethylallylammoniumCdCl3 (DMAACdCl3) exhibits an above room-temperature ferroelectric phase transition with a saturated polarization of 1.9 μC cm-2 and a coercive field of 5.0 kV cm-1. The thin film of DMAACdCl3 is successfully fabricated using an easy processing spinning method and maintains well ferroelectric properties verified by piezoresponse force microscopy (PFM). More significantly, the ferroelectric thin film offers superior transverse piezoelectricity with an in-plane piezoelectric response of about 41 pC N-1, which is about twice that of well-known piezoelectric polymer PVDF (21 pC N-1). Transverse piezoelectricity has been scarcely studied in molecular ferroelectrics, and its exploitation would play an important role in the design of next-generation smart piezoelectric devices.
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Affiliation(s)
- Zhong-Xia Wang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Hua Zhang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Fang Wang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Hao Cheng
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Wen-Hui He
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Yu-Hua Liu
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Xue-Qin Huang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
| | - Peng-Fei Li
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, PR China
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23
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Xiong R, Lu S, Zhang Z, Cheng H, Li P, Liao W. A Chiral Thermochromic Ferroelastic with Seven Physical Channel Switches. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000290] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ren‐Gen Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast University Nanjing 211189 P. R. China
| | - Si‐Qi Lu
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast University Nanjing 211189 P. R. China
| | - Zhi‐Xu Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast University Nanjing 211189 P. R. China
| | - Hao Cheng
- Ordered Matter Science Research CenterNanchang University Nanchang 330031 P. R. China
| | - Peng‐Fei Li
- Ordered Matter Science Research CenterNanchang University Nanchang 330031 P. R. China
| | - Wei‐Qiang Liao
- Ordered Matter Science Research CenterNanchang University Nanchang 330031 P. R. China
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24
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Xiong R, Lu S, Zhang Z, Cheng H, Li P, Liao W. A Chiral Thermochromic Ferroelastic with Seven Physical Channel Switches. Angew Chem Int Ed Engl 2020; 59:9574-9578. [DOI: 10.1002/anie.202000290] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Ren‐Gen Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast University Nanjing 211189 P. R. China
| | - Si‐Qi Lu
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast University Nanjing 211189 P. R. China
| | - Zhi‐Xu Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast University Nanjing 211189 P. R. China
| | - Hao Cheng
- Ordered Matter Science Research CenterNanchang University Nanchang 330031 P. R. China
| | - Peng‐Fei Li
- Ordered Matter Science Research CenterNanchang University Nanchang 330031 P. R. China
| | - Wei‐Qiang Liao
- Ordered Matter Science Research CenterNanchang University Nanchang 330031 P. R. China
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25
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Song XJ, Zhang ZX, Chen XG, Zhang HY, Pan Q, Yao J, You YM, Xiong RG. Bistable State of Protons for Low-Voltage Memories. J Am Chem Soc 2020; 142:9000-9006. [DOI: 10.1021/jacs.0c02924] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xian-Jiang Song
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Zhi-Xu Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Xiao-Gang Chen
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Han-Yue Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Qiang Pan
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Jie Yao
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Yu-Meng You
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Ren-Gen Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
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26
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Sui Y, Liu DS, Chen WT, Wang LJ, Ma YX, Lai HQ, Zhou YW, Wen HR. Organic-inorganic Hybrid ([BrCH 2 CH 2 N(CH 3 ) 3 ] + 2 [CdBr 4 ] 2- ) with Unusual Ferroelectric and Switchable Dielectric Bifunctional Properties over Different Temperature Range. Chem Asian J 2020; 15:1621-1626. [PMID: 32239798 DOI: 10.1002/asia.202000241] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/30/2020] [Indexed: 11/09/2022]
Abstract
Both ferroelectric and switchable dielectric behaviors are of great academic value and practical significance, but they usually exist alone. If combine the two properties into one compound, it will be more valuable in practical application. In this paper, quasi-spherical (2-bromoethyl) trimethylammonium cation was used to match with [CdBr4 ]2- anion, and a new organic-inorganic hybrid compound ([BrCH2 CH2 N(CH3 )3 ]+ 2 [CdBr4 ]2- , BETABCdBr) was obtained and carefully characterized. The results indicate that this compound undergoes two continuous reversible phase transition around 342 K and 390 K. It could respectively exhibit ferroelectric and switchable dielectric properties over different temperature range. This work may provide a new clue to explore new types of bifunctional phase transition smart materials to meet various application requirements.
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Affiliation(s)
- Yan Sui
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - Dong-Sheng Liu
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - Wen-Tong Chen
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - Liang-Jun Wang
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - Yu-Xiao Ma
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - Hui-Qi Lai
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - Yu-Wei Zhou
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
| | - He-Rui Wen
- School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China
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Long J, Ivanov MS, Khomchenko VA, Mamontova E, Thibaud JM, Rouquette J, Beaudhuin M, Granier D, Ferreira RAS, Carlos LD, Donnadieu B, Henriques MSC, Paixão JA, Guari Y, Larionova J. Room temperature magnetoelectric coupling in a molecular ferroelectric ytterbium(III) complex. Science 2020; 367:671-676. [DOI: 10.1126/science.aaz2795] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 12/20/2019] [Indexed: 11/02/2022]
Abstract
Magnetoelectric (ME) materials combine magnetic and electric polarizabilities in the same phase, offering a basis for developing high-density data storage and spintronic or low-consumption devices owing to the possibility of triggering one property with the other. Such applications require strong interaction between the constitutive properties, a criterion that is rarely met in classical inorganic ME materials at room temperature. We provide evidence of a strong ME coupling in a paramagnetic ferroelectric lanthanide coordination complex with magnetostrictive phenomenon. The properties of this molecular material suggest that it may be competitive with inorganic magnetoelectrics.
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Affiliation(s)
- Jérôme Long
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Maxim S. Ivanov
- CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
| | | | - Ekaterina Mamontova
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Jean-Marc Thibaud
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Jérôme Rouquette
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Mickaël Beaudhuin
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Dominique Granier
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Rute A. S. Ferreira
- Physics Department and CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Luis D. Carlos
- Physics Department and CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Bruno Donnadieu
- Fédération de Recherche Chimie Balard–FR3105, Université de Montpellier, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | | | - José António Paixão
- CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
| | - Yannick Guari
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Joulia Larionova
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
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28
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Zhang ZX, Zhang T, Shi PP, Zhang WY, Ye Q, Fu DW. Exploring high-performance integration in a plastic crystal/film with switching and semiconducting behavior. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01498e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
As a room-temperature plastic crystal, (N,N-dimethylpiperidinium)3Bi2Cl9 can integrate semiconducting behavior and switchable properties into one single flexible material, making it a potential candidate in flexible multifunctional devices.
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Affiliation(s)
- Zhi-Xu Zhang
- Ordered Matter Science Research Center
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics
- Southeast University
- Nanjing 211189
- P.R. China
| | - Tie Zhang
- Ordered Matter Science Research Center
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics
- Southeast University
- Nanjing 211189
- P.R. China
| | - Ping-Ping Shi
- Ordered Matter Science Research Center
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics
- Southeast University
- Nanjing 211189
- P.R. China
| | - Wan-Ying Zhang
- Institute for Science and Applications of Molecular Ferroelectrics
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P.R. China
| | - Qiong Ye
- Ordered Matter Science Research Center
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics
- Southeast University
- Nanjing 211189
- P.R. China
| | - Da-Wei Fu
- Ordered Matter Science Research Center
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics
- Southeast University
- Nanjing 211189
- P.R. China
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29
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Zhang HY, Tang YY, Shi PP, Xiong RG. Toward the Targeted Design of Molecular Ferroelectrics: Modifying Molecular Symmetries and Homochirality. Acc Chem Res 2019; 52:1928-1938. [PMID: 30986035 DOI: 10.1021/acs.accounts.8b00677] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Although the first ferroelectric discovered in 1920 is Rochelle salt, a typical molecular ferroelectric, the front-runners that have been extensively studied and widely used in diverse applications, such as memory elements, capacitors, sensors, and actuators, are inorganic ferroelectrics with excellent electrical, mechanical, and optical properties. With the increased concerns about the environment, energy, and cost, molecular ferroelectrics are becoming promising supplements for inorganic ferroelectrics. The unique advantages of high structural tunability and homochirality, which are unavailable in their inorganic counterparts, make molecular systems a good platform for manipulating ferroelectricity. Remarkably, based on the Neumann's principle and the Curie symmetry principle defining the group-to-subgroup relationship, we have found some outstanding high-temperature molecular ferroelectrics, like diisopropylammonium bromide (DIPAB) with a large spontaneous polarization up to 23 μC/cm2 ( Fu, D. W.; et al. Science 2013 , 339 , 425 ). However, their application potential is severely limited by the uniaxial nature, leading to major issues in finding proper substrates for thin-film growth and achieving high thin-film performance. Inspired by the commercialized inorganic ferroelectrics like Pb(Zr, Ti)O3 (PZT), where the multiaxial nature contributes greatly to the optimized ferroelectric and piezoelectric performance, developing high-temperature multiaxial molecular ferroelectrics is an imminent task. In this Account, we review our recent research progress on the targeted design of multiaxial molecular ferroelectrics. We first propose the "quasi-spherical theory", a phenomenological theory based on the Curie symmetry principle, to modify the spherical cations to a low-symmetric quasi-spherical geometry for acquiring the highly symmetric paraelectric phase and the polar ferroelectric phase of multiaxial ferroelectrics simultaneously. Besides the sizes and weights of the cation and anion, the intermolecular interactions are particularly crucial for decelerating the molecular rotation at low temperature to reasonably induce ferroelectricity. It means that the momentums of the cation and anion should be matched, so we describe the "momentum matching theory". In particular, introducing homochirality, a superiority of molecular materials over the inorganic ones, was demonstrated as an effective approach to increase the incidence of ferroelectric crystal structures. Thanks to the striking chemical variability and structure-property flexibility of molecular materials, our research efforts outlined in this Account have led to and will further motivate the richness and the application exploration of high-temperature, high-performance multiaxial molecular ferroelectrics, along with the implementation and perfection of the targeted design strategies.
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Affiliation(s)
- Han-Yue Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Yuan-Yuan Tang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Ping-Ping Shi
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Ren-Gen Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
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30
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Fan XW, Liu Y, Tang YZ, Wei WJ, Zhang JC, Luo ZY, Wang CF, Tan YH. High-Temperature Reversible Phase-Transition Behavior, Switchable Dielectric and Second Harmonic Generation Response of Two Homochiral Crown Ether Clathrates. Chem Asian J 2019; 14:2203-2209. [PMID: 31127685 DOI: 10.1002/asia.201900512] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/20/2019] [Indexed: 11/08/2022]
Abstract
Crowning achievement: Two homochiral crown ether clathrates were synthesized which undergo high-temperature reversible phase transition. In addition, second harmonic generation (SHG) responses and abnormal dielectric property further confirm the reversible phase transitions and symmetry breaking behaviors of the structures.
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Affiliation(s)
- Xiao-Wei Fan
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yi Liu
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yun-Zhi Tang
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Wen-Juan Wei
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Jian-Chen Zhang
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Zi-Yu Luo
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Chang-Feng Wang
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yu-Hui Tan
- School of Material & Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
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31
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Yunis R, Hollenkamp AF, Forsyth C, Doherty CM, Al-Masri D, Pringle JM. Organic salts utilising the hexamethylguanidinium cation: the influence of the anion on the structural, physical and thermal properties. Phys Chem Chem Phys 2019; 21:12288-12300. [PMID: 31139779 DOI: 10.1039/c9cp01740b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The synthesis and characterisation of new solid-state electrolytes is a key step in advancing the development of safer and more reliable electrochemical energy storage technologies. Organic ionic plastic crystals (OIPCs) are an increasingly promising class of material for application in devices such as lithium or sodium metal batteries as they can support high ionic conductivity, with good electrochemical and thermal stability. However, the choice of OIPC-forming ions is still relatively limited. Furthermore, understanding of the influence of different cations and anions on the thermal, structural and transport properties of these materials is still in its infancy. Here we report the synthesis and in-depth characterisation of a range of new OIPCs utilising the hexamethylguanidinium cation ([HMG]) with five different anions. The thermal, structural, transport properties and free volume in the different salts have been investigated. The free volume within the salts has been investigated by positron annihilation lifetime spectroscopy, and the single crystal and powder X-ray diffraction analysis of [HMG] bis(trifluoromethanesulfonyl)imide ([TFSI]) in phase I and II, [HMG] hexafluorophosphate ([PF6]) and [HMG] tetrafluoroborate ([HMG][BF4]) are reported. The HMG cation can exhibit significant disorder, which is advantageous for plasticity and future use of these materials as high ionic conductivity matrices. The bis(fluorosulfonyl)imide salt, [HMG][FSI], is identified as particularly promising for use as an electrolyte, with good electrochemical stability and soft mechanical properties. The findings introduce a range of new materials to the solid-state electrolyte arena, while the insights into the physico-chemical relationships in these materials will be of importance for the future development and understanding of other ionic electrolytes.
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Affiliation(s)
- Ruhamah Yunis
- Institute for Frontier Materials, Deakin University, Melbourne, Victoria 3125, Australia.
| | - Anthony F Hollenkamp
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Energy, Clayton, 3168, VIC, Australia
| | - Craig Forsyth
- School of Chemistry, Monash University, Wellington Road, Clayton, VIC 3800, Australia
| | - Cara M Doherty
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Manufacturing, Clayton, 3168, VIC, Australia
| | - Danah Al-Masri
- Institute for Frontier Materials, Deakin University, Melbourne, Victoria 3125, Australia.
| | - Jennifer M Pringle
- Institute for Frontier Materials, Deakin University, Melbourne, Victoria 3125, Australia.
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32
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Harada J, Kawamura Y, Takahashi Y, Uemura Y, Hasegawa T, Taniguchi H, Maruyama K. Plastic/Ferroelectric Crystals with Easily Switchable Polarization: Low-Voltage Operation, Unprecedentedly High Pyroelectric Performance, and Large Piezoelectric Effect in Polycrystalline Forms. J Am Chem Soc 2019; 141:9349-9357. [PMID: 31184147 DOI: 10.1021/jacs.9b03369] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Molecular ferroelectric crystals have attracted growing interest as potential alternatives to conventional lead-based ceramic ferroelectrics. We have recently discovered that a class of compounds known as plastic crystals can show multiaxial ferroelectricity, which allows ferroelectric performance even in polycrystalline forms. Here, we report new plastic/ferroelectric ionic molecular crystals that exhibit remarkably small coercive electric fields at room temperature. The easily switchable ferroelectric polarization enables low-voltage switching operations and high-frequency performance. Such ferroelectric crystals can be readily processed into bulk polycrystalline forms with desired shapes that are characterized by unprecedentedly high pyroelectric figures of merit and large piezoelectricity. These multifunctional molecular crystals represent highly attractive prospects for device elements with a diverse range of applications, which will significantly boost the development of molecular ferroelectric crystals.
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Affiliation(s)
| | | | | | - Yohei Uemura
- Department of Applied Physics , The University of Tokyo , Tokyo 113-8656 , Japan
| | - Tatsuo Hasegawa
- Department of Applied Physics , The University of Tokyo , Tokyo 113-8656 , Japan
| | - Hiroki Taniguchi
- Department of Physics , Nagoya University , Nagoya 464-8602 , Japan
| | - Koji Maruyama
- Department of Physics , Nagoya University , Nagoya 464-8602 , Japan
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33
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Wang S, Liu X, Li L, Ji C, Sun Z, Wu Z, Hong M, Luo J. An Unprecedented Biaxial Trilayered Hybrid Perovskite Ferroelectric with Directionally Tunable Photovoltaic Effects. J Am Chem Soc 2019; 141:7693-7697. [DOI: 10.1021/jacs.9b02558] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sasa Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xitao Liu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Lina Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Chengmin Ji
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Zhihua Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Zhenyue Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Maochun Hong
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Junhua Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
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34
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Effect of alkyl chain length in 2-(quinuclidinium)-alkanocarboxylates on structures of their complexes with 2,6-dichloro-4-nitrophenol. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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35
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Yang CK, Chen WN, Ding YT, Wang J, Rao Y, Liao WQ, Xie Y, Zou W, Xiong RG. Directional Intermolecular Interactions for Precise Molecular Design of a High-Tc Multiaxial Molecular Ferroelectric. J Am Chem Soc 2019; 141:1781-1787. [DOI: 10.1021/jacs.8b13223] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chen-Kai Yang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Wang-Nan Chen
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Yan-Ting Ding
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Jing Wang
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Yin Rao
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Wei-Qiang Liao
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Yongfa Xie
- College of Chemistry, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Wennan Zou
- Institute for Advanced Study, Nanchang University, Nanchang 330031, People’s Republic of China
| | - Ren-Gen Xiong
- Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People’s Republic of China
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
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36
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Chen SP, Wang CF, Zhou HT, Tan YH, Wen HR, Tang YZ. Symmetry breaking and switchable thermal dielectric behaviors triggered by order-disorder phase transition in a neutral co-crystallized organic adduct. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.11.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Zafar Z, Zafar A, Wang WH, Liu MY, Ni ZH, You YM. Nonvolatile Memory Based on Molecular Ferroelectric/Graphene Field Effect Transistor. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39187-39193. [PMID: 30295018 DOI: 10.1021/acsami.8b12768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ferroelectric thin films are extensively attractive as next-generation nonvolatile memories. Recently, molecular ferroelectrics (MFe), as an emerging new class, have been a new research focus because of their desirable characteristics such as good solution processability, tunable chemical properties, and bio-friendly compositions. However, traditional uniaxial MFe only possess one polar axis which greatly limits their application, as it requires restricted orientational control in single crystal. To achieve macroscopic ferroelectricity and thus fully realize technological advantages of MFe, development of multiaxes is imperative to maximize effective polarization in specific crystallographic orientations. Herein, we present an early exploration on polycrystalline multiaxial MFe thin films of [Hdabco][ReO4] with a two-dimensional graphene hybrid nonvolatile memory device. The polarization switching of MFe is experimentally realized by the nonvolatile modulation of two current states in graphene. Such a hybrid device can exhibit large memory window ∼35 V implying its great potential in memory applications. Hence, by taking the advantages of multiple polarization axes of MFe, the low cost and large area MFe/graphene hybrid memory manifests new possibilities for the integration of these materials as flexible next generation memory devices.
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Affiliation(s)
- Zainab Zafar
- Ordered Matter Science Research Center , Southeast University , Nanjing 211189 , P. R. China
| | - Amina Zafar
- School of Physics , Southeast University , Nanjing 211189 , China
| | - Wen-Hui Wang
- School of Physics , Southeast University , Nanjing 211189 , China
| | - Mei-Ying Liu
- Ordered Matter Science Research Center , Southeast University , Nanjing 211189 , P. R. China
| | - Zhen-Hua Ni
- School of Physics , Southeast University , Nanjing 211189 , China
| | - Yu-Meng You
- Ordered Matter Science Research Center , Southeast University , Nanjing 211189 , P. R. China
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38
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Liu Y, Zhu CL, Zheng XY, Qin LL, Yang SX, Liu ZQ. Phase transition and switchable dielectric behaviours in an organic-inorganic hybrid compound: (3-nitroanilinium) 2(18-crown-6) 2(H 2PO 4) 2(H 3PO 4) 3(H 2O). ROYAL SOCIETY OPEN SCIENCE 2018; 5:180738. [PMID: 30473824 PMCID: PMC6227991 DOI: 10.1098/rsos.180738] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 08/29/2018] [Indexed: 06/09/2023]
Abstract
An organic-inorganic hybrid compound with an extensive three-dimensional (3D) crystal structure, (3-nitroanilinium)2(18-crown-6)2(H2PO4)2(H3PO4)3(H2O) (1), was synthesized under slow evaporation conditions. Differential scanning calorimetry measurements indicated that 1 underwent a reversible phase transition at ca 231 K with a hysteresis width of 10 K. Variable-temperature X-ray single-crystal diffraction revealed that the phase transition of 1 can be ascribed to coupling of pendulum-like motions of its nitro group with proton transfer in O-H···O hydrogen bonds of the 3D framework. The temperature dependence of its dielectric permittivity demonstrated a step-like change in the range of 150-280 K with remarkable dielectric anisotropy, making 1 a promising switchable dielectric material. Potential energy calculations further supported the possibility of dynamic motion of the cationic nitro group. Overall, our findings may inspire the development of other switchable dielectric phase transition materials by introducing inorganic anions into organic-inorganic hybrid systems.
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Affiliation(s)
| | | | | | | | | | - Zun-qi Liu
- Author for correspondence: Zun-qi Liu e-mail:
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39
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Tang YY, Li PF, Liao WQ, Shi PP, You YM, Xiong RG. Multiaxial Molecular Ferroelectric Thin Films Bring Light to Practical Applications. J Am Chem Soc 2018; 140:8051-8059. [PMID: 29894637 DOI: 10.1021/jacs.8b04600] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Though dominating most of the practical applications, inorganic ferroelectric thin films usually suffer from the high processing temperatures, the substrate limitation, and the complicated fabrication techniques that are high-cost, energy-intensive, and time-consuming. By contrast, molecular ferroelectrics offer more opportunities for the next-generation flexible and wearable devices due to their inherent flexibility, tunability, environmental-friendliness, and easy processability. However, most of the discovered molecular ferroelectrics are uniaxial, one major obstacle for improving the thin-film performance and expanding the application potential. In this Perspective, we overview the recent advances on multiaxial molecular ferroelectric thin films, which is a solution to this issue. We describe the strategies for screening multiaxial molecular ferroelectrics and characterizations of the thin films, and highlight their advantages and future applications. Upon rational and precise design as well as optimizing ferroelectric performance, the family of multiaxial molecular ferroelectric thin films surely will get booming in the near future and inject vigor into the century-old ferroelectric field.
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Affiliation(s)
- Yuan-Yuan Tang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics , Southeast University , Nanjing 211189 , People's Republic of China
| | - Peng-Fei Li
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics , Southeast University , Nanjing 211189 , People's Republic of China
| | - Wei-Qiang Liao
- Ordered Matter Science Research Center , Nanchang University , Nanchang 330031 , People's Republic of China
| | - Ping-Ping Shi
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics , Southeast University , Nanjing 211189 , People's Republic of China
| | - Yu-Meng You
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics , Southeast University , Nanjing 211189 , People's Republic of China
| | - Ren-Gen Xiong
- Ordered Matter Science Research Center , Nanchang University , Nanchang 330031 , People's Republic of China.,Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics , Southeast University , Nanjing 211189 , People's Republic of China
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40
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Tokutomi H, Wu J, Takeda T, Hoshino N, Akutagawa T. Phase transition and molecular assembly structure of ellagic acid ester derivatives. NEW J CHEM 2018. [DOI: 10.1039/c8nj02609b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ellagic acid and its esters were examined in terms of phase transition, electronic structure, dielectric constant, and molecular assembly.
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Affiliation(s)
- Hisashi Tokutomi
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8577
- Japan
| | - JianYun Wu
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8577
- Japan
| | - Takashi Takeda
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8577
- Japan
- Institute of Multidisciplinary Research for Advanced Materials
| | - Norihisa Hoshino
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8577
- Japan
- Institute of Multidisciplinary Research for Advanced Materials
| | - Tomoyuki Akutagawa
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8577
- Japan
- Institute of Multidisciplinary Research for Advanced Materials
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41
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Xu WJ, Zeng Y, Yuan W, Qiu RG, Zhang WX, Chen XM. Room-temperature optic-electric duple bistabilities induced by plastic transition. Chem Commun (Camb) 2018; 54:3347-3350. [DOI: 10.1039/c8cc00867a] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A plastic crystal simultaneously exhibits room-temperature bistabilities in two physical channels: dielectric and nonlinear optics.
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Affiliation(s)
- Wei-Jian Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Ying Zeng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wei Yuan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Rong-Guan Qiu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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42
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Lu SQ, Chen XG, Gao JX, Lu Y, Hua XN, Liao WQ. High-temperature sequential structural transitions with distinct switchable dielectric behaviors in two organic ionic plastic crystals: [C4H11NBr] [ClO4] and [C4H11NBr] [BF4]. CrystEngComm 2018. [DOI: 10.1039/c7ce01731f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[C4H11NBr] [ClO4] and [C4H11NBr] [BF4] undergo phase transitions from an ordered phase to plastic phase accompanied by switchable dielectric anomalies.
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Affiliation(s)
- Si-Qi Lu
- Ordered Matter Science Research Center
- College of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P.R. China
| | - Xiao-Gang Chen
- Ordered Matter Science Research Center
- College of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P.R. China
| | - Ji-Xing Gao
- Ordered Matter Science Research Center
- College of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P.R. China
| | - Yang Lu
- Ordered Matter Science Research Center
- College of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P.R. China
| | - Xiu-Ni Hua
- Ordered Matter Science Research Center
- College of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P.R. China
| | - Wei-Qiang Liao
- Ordered Matter Science Research Center
- College of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P.R. China
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43
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Harada J, Yoneyama N, Yokokura S, Takahashi Y, Miura A, Kitamura N, Inabe T. Ferroelectricity and Piezoelectricity in Free-Standing Polycrystalline Films of Plastic Crystals. J Am Chem Soc 2017; 140:346-354. [PMID: 29224333 DOI: 10.1021/jacs.7b10539] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Plastic crystals represent a unique compound class that is often encountered in molecules with globular structures. The highly symmetric cubic crystal structure of plastic crystals endows these materials with multiaxial ferroelectricity that allows a three-dimensional realignment of the polarization axes of the crystals, which cannot be achieved using conventional molecular ferroelectric crystals with low crystal symmetry. In this work, we focused our attention on malleability as another characteristic feature of plastic crystals. We have synthesized the new plastic/ferroelectric ionic crystals tetramethylammonium tetrachloroferrate(III) and tetramethylammonium bromotrichloroferrate(III), and discovered that free-standing translucent films can be easily prepared by pressing powdered samples of these compounds. The thus obtained polycrystalline films exhibit ferroelectric polarization switching and a relatively large piezoelectric response at room temperature. The ready availability of functional films demonstrates the practical utility of such plastic/ferroelectric crystals, and considering the vast variety of possible constituent cations and anions, a wide range of applications should be expected for these unique and attractive functional materials.
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Affiliation(s)
- Jun Harada
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
| | - Naho Yoneyama
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
| | - Seiya Yokokura
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
| | - Yukihiro Takahashi
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
| | - Atsushi Miura
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
| | - Noboru Kitamura
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
| | - Tamotsu Inabe
- Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan
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44
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Gao W, Zhang Z, Li PF, Tang YY, Xiong RG, Yuan G, Ren S. Chiral Molecular Ferroelectrics with Polarized Optical Effect and Electroresistive Switching. ACS NANO 2017; 11:11739-11745. [PMID: 29136365 DOI: 10.1021/acsnano.7b07090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multifunctional properties of chiral molecules arise from the coexistence of mirror-symmetry-induced stereoisomers and optical rotation characteristics in one material. One of these complex phenomena in these molecules is chiral ferroelectricity, providing the coupling between polarized light and the spatial asymmetry induced dipole moment. Herein we describe the chiral polarization and electroresistance in molecular ferroelectric (R)-(-)-3-hydroxyquinuclidinium chloride thin films with a Curie temperature of 340 K. The high transmittance of chiral ferroelectrics is coupled with polarized light for a linear electro-optic effect, which exhibits angle-dependent optical behaviors. The polarization-controlled conductance imposes a large on/off ratio (∼26.6) of electroresistive switching in molecular ferroelectrics with superior antifatigue endurance.
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Affiliation(s)
- Wenxiu Gao
- Department of Mechanical Engineering and Temple Materials Institute, Temple University , Philadelphia, Pennsylvania 19122, United States
- School of Materials Science and Engineering, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Zhuolei Zhang
- Department of Mechanical Engineering and Temple Materials Institute, Temple University , Philadelphia, Pennsylvania 19122, United States
| | - Peng-Fei Li
- Ordered Matter Science Research Center, Southeast University , Nanjing 211189, China
| | - Yuan-Yuan Tang
- Ordered Matter Science Research Center, Southeast University , Nanjing 211189, China
| | - Ren-Gen Xiong
- Ordered Matter Science Research Center, Southeast University , Nanjing 211189, China
| | - Guoliang Yuan
- School of Materials Science and Engineering, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Shenqiang Ren
- Department of Mechanical Engineering and Temple Materials Institute, Temple University , Philadelphia, Pennsylvania 19122, United States
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45
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Tang YY, Li PF, Zhang WY, Ye HY, You YM, Xiong RG. A Multiaxial Molecular Ferroelectric with Highest Curie Temperature and Fastest Polarization Switching. J Am Chem Soc 2017; 139:13903-13908. [PMID: 28866880 DOI: 10.1021/jacs.7b07715] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The classical organic ferroelectric, poly(vinylidene fluoride) (PVDF), has attracted much attention as a promising candidate for data storage applications compatible with all-organic electronics. However, it is the low crystallinity, the large coercive field, and the limited thermal stability of remanent polarization that severely hinder large-scale integration. In light of that, we show a molecular ferroelectric thin film of [Hdabco][ReO4] (dabco = 1,4-diazabicyclo[2.2.2]octane) (1), belonging to another class of typical organic ferroelectrics. Remarkably, it displays not only the highest Curie temperature of 499.6 K but also the fastest polarization switching of 100k Hz among all reported molecular ferroelectrics. Combined with the large remanent polarization values (∼9 μC/cm2), the low coercive voltages (∼10 V), and the unique multiaxial ferroelectric nature, 1 becomes a promising and viable alternative to PVDF for data storage applications in next-generation flexible devices, wearable devices, and bionics.
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Affiliation(s)
- Yuan-Yuan Tang
- Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China
| | - Peng-Fei Li
- Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China
| | - Wan-Ying Zhang
- Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China
| | - Heng-Yun Ye
- Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China
| | - Yu-Meng You
- Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China
| | - Ren-Gen Xiong
- Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China
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46
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Zhang WY, Tang YY, Li PF, Shi PP, Liao WQ, Fu DW, Ye HY, Zhang Y, Xiong RG. Precise Molecular Design of High-Tc 3D Organic–Inorganic Perovskite Ferroelectric: [MeHdabco]RbI3 (MeHdabco = N-Methyl-1,4-diazoniabicyclo[2.2.2]octane). J Am Chem Soc 2017; 139:10897-10902. [DOI: 10.1021/jacs.7b06013] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wan-Ying Zhang
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Yuan-Yuan Tang
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Peng-Fei Li
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Ping-Ping Shi
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Wei-Qiang Liao
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Da-Wei Fu
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Heng-Yun Ye
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Yi Zhang
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
| | - Ren-Gen Xiong
- Ordered Matter Science Research
Center and Jiangsu Key Laboratory for Science and Applications of
Molecular Ferroelectrics, Southeast University, Nanjing 211189, People’s Republic of China
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