网状化学在其状形式:作为一个案例研究的轴性状Zr(IV) - 螺旋金属-有机框架
Wei Gong1, Xinfa Chen1, Kira M Fahy2
1School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
Journal of the American Chemical Society
|June 13, 2023
概括
有机配体中的性控制了基于的金属有机框架 (MOF) 的拓和功能. 斯皮罗-1是一种性MOF,与赛米MOF斯皮罗-3和斯皮罗-4不同,显示出优异的水蒸气吸收能力.
科学领域:
- 材料科学
- 化学学
- 晶体学
背景情况:
- 网状化学,特别是金属有机框架 (MOF),依赖于有机配体和无机二次结构单元 (SBU) 的相互作用.
- 连接物变化对MOF结构和功能有显著影响,但连接物性作用仍未得到充分研究.
研究的目的:
- 调查有机配体性对基于的MOF的合成和特性的影响.
- 探索由联体性和反应条件控制的不同拓结构和功能性质的形成.
主要方法:
- 合成基于的MOF,使用碳酸盐功能化的本质上性1,1'-螺旋-7,7'-酸联体.
- 通过配体度 (enantiopure与racemic) 和温度控制框架拓和相位形成.
- MOF结构,拓 (sjt,alb,azs) 和多孔性的特征.
- 评估水蒸气吸附性能.
主要成果:
- 合成了两种不同的拓结构,即Spiro-1 (同质性,sjt拓) 和Spiro-3 (血性,alb拓).
- 在特定的温度条件下形成了一种动力稳定的阶段,Spiro-4 (racemic, azs net).
- 由于其大腔,高孔隙性和水友群,Spiro-1表现出了显著的水蒸气吸附.
- 由于不良的孔隙系统和结构不稳定性,Spiro-3和Spiro-4的吸水能力较差.
结论:
- 连接物性是指导MOF拓和调材料功能的关键因素.
- 这项研究表明通过奇拉连接物成功控制MOF结构和性能.
- 这项工作有助于理解和发展网状化学和功能性多孔材料.
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