链式设计:通过非线性结合连接器提高聚合物半导体的伸缩性
Ting-Wei Chang1, Yu-Ching Weng1, Yi-Ting Tsai1
1Department of Chemical Engineering and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan.
ACS applied materials & interfaces
|October 28, 2023
概括
研究人员开发了一种通用策略,通过结合非线性联链接器来增强聚合物伸展性. 这种方法在不牺牲电荷传输的情况下提高了灵活性,使耐用,可伸缩的电子产品成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 有机电子 有机电子
背景情况:
- 聚合物骨干结构显著影响晶体行为和电荷传输.
- 优化可拉伸聚合物半导体需要有效的策略.
- 目前,对于多种合聚合物而言,还缺乏一种通用方法.
研究的目的:
- 引入一种通用策略,以提高聚合物伸展性.
- 研究非线性联链接器 (NCL) 对聚合物构造和特性的影响.
- 证明这种策略在合聚合物中的广泛适用性.
主要方法:
- 将meta-dibromobenzene (MB) 作为NCL纳入基于diketopyrrolopyrrole-thiophene (基于DPP) 的聚合物骨干中.
- 分析MB对聚合物链形状,结晶性和自由体积的影响.
- 使用修改的DPP聚合物制造和测试完全可拉伸的晶体管.
主要成果:
- 结合MB引发了链曲,破坏了骨干线性和对称性.
- 改性聚合物显示旋转半径减少和自由体积扩大.
- 这导致了调整的结晶性和显著增加的聚合物伸展性.
- 维护了载荷载体的移动性,证明了该方法的有效性.
- 可伸缩晶体管表现出高移动性 (0.5 cm^2 V^-1 s^-1) 和耐用性 (在25%的应变下1000个循环后90%的移动性).
结论:
- 该NCL战略提供了一种通用方法,以提高合聚合物伸展性.
- 这种方法允许对主链形状进行系统控制.
- 这种方法在各种捐赠-接受聚合物中广泛适用.
- 开发的战略使得能够创建高性能,耐用的可拉伸电子设备.
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