一个半孔三维共价有机框架的金属化
Luke A Baldwin1, Jonathan W Crowe1, David A Pyles1
1Department of Chemistry and Biochemistry, The Ohio State University , Columbus, Ohio 43210, United States.
Journal of the American Chemical Society
|November 5, 2016
概括
研究人员开发了一种新的3D共价有机框架 (COF),使用脱水素单元. 这种高度多孔的材料具有创纪录的低密度和极好的乙和乙烯吸收能力.
科学领域:
- 材料科学
- 化学学
背景情况:
- 合成金属化3D共价有机框架 (COF) 面临重大挑战.
- 脱乙 (DBA) 单元为框架建筑提供独特的结构性质.
研究的目的:
- 合成和描述一个包含DBA单元的新型3DCOF.
- 研究化 (特别是) 对COF的特性的影响.
- 评估产生的材料的气体吸收能力.
主要方法:
- 使用DBA单元合成高度多孔的3DCOF.
- 对COF的表面积 (SABET),密度和结晶性的描述.
- DBA-3D-COF与 (Ni) 的金属化形成了Ni-DBA-3D-COF.
- 气体吸附分析以确定乙和乙烯的吸收能力.
主要成果:
- 成功合成了具有异常高表面积 (5083 m2 g-1) 和创纪录的低密度 (0.13 g cm-3) 的3DCOF.
- 与Ni的金属化产生了Ni-DBA-3D-COF,表面积最小减少 (4763 m2 g-1),保持结晶性.
- 这两种DBA-3D-COF都显示出大量的乙和乙烯气体吸收能力.
结论:
- 开发的DBA-3D-COF是气体储存应用的一个有前途的材料.
- 可以在没有显著的孔隙性损失的情况下实现金属化,从而为功能化COF开辟了道路.
- 高表面积和低密度使这些材料具有各种化学应用的吸引力.
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