在高度稳定的基于Zr的金属有机框架中控制氧化潜力和电染色
Leonid Shupletsov1, Sebahat Topal1, Alina Schieck1
1Chair of Inorganic Chemistry I, Technische Universität Dresden, 01069 Dresden, Germany.
Journal of the American Chemical Society
|September 3, 2024
概括
研究人员使用基于的金属有机框架 (MOF) 中的Piccard类系统开发了新的电色材料 (EC). 这些基于MOF的新型EC材料提供快速切换,高对比度和出色的稳定性,符合无机标准.
科学领域:
- 材料科学
- 电化学
- 纳米技术
背景情况:
- 电色材料对于智能窗户和显示器至关重要.
- 目前的EC材料通常依赖于有限的构建模块.
- 金属有机框架 (MOF) 具有可调节的特性,但具有有限的EC应用.
研究的目的:
- 引入基于Piccard类型的系统集成到基于的MOF (Zr-MOF) 的新型电色材料.
- 研究这些新材料的电色性能和稳定性.
- 通过框架拓来探索对氧化还原特性的控制.
主要方法:
- 合成含有皮卡德型联体的Zr-MOF (N,N,N',N'-基酸).
- 由此产生的电色MOF材料 (DUT-65和DUT-66) 的特性.
- 电化学测试以评估切换速率,对比率,稳定性和可逆性.
主要成果:
- 新型Zr-MOF材料表现出快速切换率和高对比率 (漂白状态下53%的透射率,彩色状态下~3%).
- 这些材料具有长寿命稳定性,与无机EC材料相美,在5微米薄膜上,在12.5秒内达到90%的着色.
- 框架拓锁定了联体的构造,使其具有独特的氧化还原特性和对氧化途径的控制.
结论:
- 将皮卡德型系统集成到Zr-MOF中可以获得高性能电色材料.
- 这些基于MOF的EC材料为传统的无机EC材料提供了有希望的替代品.
- 框架设计提供了一种调整和控制氧化还原活性链接器的电化学行为的方法.
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