精确的分子设计对有机-无机ABX3铁电
Lizhuang Chen1, Wei-Qiang Liao2, Yong Ai2
1School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, People's Republic of China.
Journal of the American Chemical Society
|March 12, 2020
概括
研究人员开发了一种新的有机-无机混合铁电材料,[CH3) 3NCH2F]ZnCl3. 这种新型的ABX3材料具有4.8μC/cm2的自发偏振,扩大了铁电化合物的设计.
科学领域:
- 材料科学
- 固态化学
- 晶体学
背景情况:
- 有机-无机ABX3混合物具有矿结构,已知具有可调节的特性,如铁电.
- 在非矿结构的ABX3混合铁电研究是有限的.
研究的目的:
- 设计和合成一种具有非矿结构的新型有机-无机ABX3混合铁电.
- 研究新材料的结构和铁电性质.
主要方法:
- 通过/替代物对[(CH3) 4N]ZnCl3进行分子修饰.
- 结晶结构的表征和自发偏振的测量.
主要成果:
- 成功合成了第一个合物ABX3铁电.
- 该材料具有4.8μC/cm2的自发偏振.
- 它具有与矿结构不同的一维[ZnCl3]-角共享ZnCl4四面体链.
结论:
- 通过打破 ZnCl4 四面体的高对称性形成极性[ZnCl3]-链是铁电性的关键.
- 这项工作引入了一个新的极性离子框架,用于设计有机-无机混合铁电.
- 这些发现鼓励进一步探索新型ABX3铁电材料.
更多相关视频
07:45Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
Published on: August 16, 2018
10.3K
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.5K
相关概念视频
00:56Extraction: Advanced Methods
1.0K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.0K
02:42Ionic Crystal Structures
16.6K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.6K