可伸缩的自我愈合的聚合物介电物通过金属连接协调交叉连接
Ying-Li Rao, Alex Chortos, Raphael Pfattner
1Corning Incorporated , SP-FR-06-1, Corning, New York 14831, United States.
Journal of the American Chemical Society
|April 22, 2016
概括
这项研究引入了用于先进可拉伸电子的聚甲基 (PDMS) 中的金属连接器协调的自愈电阻弹性体. 这些材料在有机场效应晶体管 (OFET) 中表现出强大的性能,使其可靠,无歇斯底里操作.
科学领域:
- 材料科学
- 聚合物化学
- 有机电子
背景情况:
- 介电弹性体对于灵活的电子产品至关重要.
- 开发自愈和机械坚固的介电材料仍然是一个挑战.
- 对于聚合物网络来说,金属连接器协调提供可调的交叉连接.
研究的目的:
- 在聚甲基 (PDMS) 中使用金属配体协调来设计自我修复的介电弹性体.
- 研究不同金属离子 (Fe2+, Zn2+) 和对抗离子对材料性能和设备性能的影响.
- 评估这些材料在有机场效应晶体管 (OFET) 中作为门介电材料的适用性.
主要方法:
- 纳入2,2'-双-5,5'-二胺联体和金属盐 (FeCl2,ZnCl2等) 在PDMS中.
- 制造金属合物交联PDMS薄膜.
- 在有机场效应晶体管 (OFET) 中集成PDMS作为门介电.
- OFET的电特性,包括传输特性,介电常数和应力下的门泄漏电流.
主要成果:
- 在环境条件下能够快速自我愈合.
- 与FeCl2和ZnCl2交联的PDMS在OFET中表现出增强的介电常数和无歇斯底里特征.
- 使用FeCl2-PDMS的可伸缩晶体管在1000个循环中表现稳定,达到100%的压力.
- 由于离子迁移,大离子导致突出的歇斯底里,而小Cl-离子则阻止了这一点.
结论:
- 金属联体交联PDMS是一种可伸缩电子产品的有前途的自我修复介电材料.
- 选择金属离子和反离子对于实现稳定且无歇斯底里装置的运行至关重要.
- 这种方法为设计灵活和可穿戴设备的先进的自我修复介电材料提供了途径.
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