一个没有波灵的超分子冠化合物,具有很大的压电性
Hui-Peng Lv1, Yi-Rong Li1, Xian-Jiang Song1
1Ordered Matter Science Research Center, Nanchang University, Nanchang330031, People's Republic of China.
Journal of the American Chemical Society
|January 26, 2023
概括
研究人员开发了一种新的超分子宿主-客体铁电材料,[CF3-C6H4-NH3][TFSA-18-crown-6],在没有抛光的情况下表现出显著的压电性. 这一突破为PVDF等传统压电聚合物提供了有希望的替代品.
科学领域:
- 材料科学
- 固态物理
- 超分子化学
背景情况:
- 超分子宿主-客体铁电是可取的,因为它们的内在压电性和不需要抛光.
- 现有的材料通常具有有限的压电性能.
- 聚乙烯化物 (PVDF) 需要抛光才能达到压电性.
研究的目的:
- 开发一种具有增强压电性质的新型超分子宿主-客体铁电.
- 研究H/F替代对压电性能的影响.
- 提供超越当前基准的无极电材料.
主要方法:
- 一种新型的高分子宿主-客体化合物的合成:[(CF3-C6H4-NH3) ((18-crown-6) ][TFSA].
- 材料的结构和电气特性.
- 测量压电系数 (d33,g33) 和机械质量系数 (Qm).
主要成果:
- 化合物[CF3-C6H4-NH3][TFSA]在没有抛光的情况下表现出了42 pC/N的显著压电反应.
- 合物增强了相位过渡温度,极轴和第二波生成 (SHG) 强度.
- 获得的d33,g33和Qm值超过了之前报告的超分子铁电和PVDF值.
结论:
- 开发的材料代表了无极体压电超分子化合物的重大进步.
- 替代是一种优化材料压电性的有效策略.
- 这项工作激发了下一代分子压电材料的设计.
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