互锁1D方形带的3D共价有机框架
Yuzhong Liu1, Christian S Diercks1, Yanhang Ma2
1Department of Chemistry, University of California-Berkeley; Materials Sciences Division, Lawrence Berkeley National Laboratory ; and Kavli Energy NanoSciences Institute , Berkeley , California 94720 , United States.
Journal of the American Chemical Society
|December 12, 2018
概括
研究人员使用互锁的1D有机带创建了一个新的3D编织共价有机框架 (COF-500). 这种机械互锁的结构表现出对刺激的动态毛孔大小变化.
科学领域:
- 材料科学
- 超分子化学
- 纳米技术
背景情况:
- 共价有机框架 (COF) 是具有可调节结构的晶体多孔聚合物.
- 机械纠为设计动态和响应性材料提供了一种新策略.
- 以前的COF通常缺乏结构操作的固有动态能力.
研究的目的:
- 在扩展结构中描述一种新的机械纠方式.
- 合成和描述一个3D编织的共价有机框架 (COF-500) 与互锁的1D带.
- 研究合成的COF的动态行为和反应能力.
主要方法:
- 通过化功能化Cu ((PDB) 2PO2Ph2) 复合物和四型ETTBA连接剂的伊敏凝结合成金属化COF (COF-500-Cu).
- 通过COF-500-Cu的脱,产生机械互锁的COF-500.
- 使用吸附和固态光发光学研究进行表征,以探测结构动力学.
主要成果:
- 成功合成具有pts拓的晶体多孔金属化COF (COF-500-Cu).
- 测量结果显示COF-500,其中1D方形带通过机械互锁,使集体运动成为可能.
- 在暴露于四水蒸气时,COF-500显示出动态的孔径变化,可逆缩小和重新开放,同时保持结构完整性.
结论:
- 一个基于机械互锁的1D带的新型3D编织共价有机框架 (COF-500) 已经开发出来.
- 由于机械纠,该材料表现出动态的结构变化和可逆的孔隙调节.
- 这项工作引入了通过受控机械互锁设计响应材料的新范式.
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