通过在金属-有机框架中调整其空间环境来调节非对称的有机催化剂的性能
Lujia Liu1, Tian-You Zhou1, Shane G Telfer1
1MacDiarmid Institute for Advanced Materials and Nanotechnology, Institute of Fundamental Sciences, Massey University , Palmerston North 4442, New Zealand.
Journal of the American Chemical Society
|September 21, 2017
概括
研究人员精确地控制金属有机框架 (MOF) 中的合成催化剂环境. 这种方法通过修改孔隙结构来调整催化活性和立体选择性,提供新的催化剂设计策略.
科学领域:
- 材料科学
- 催化剂
- 超分子化学
背景情况:
- 控制合成催化剂的微环境对于优化反应性和选择性至关重要.
- 多组件金属有机框架 (MOF) 提供了一个有前途的平台,因为它们有序的结构.
研究的目的:
- 展示一个系统调整MOF孔内的活跃站点周围的空间环境的方法.
- 研究工程孔隙结构对催化性能的影响.
主要方法:
- 在MUF-77框架的孔隙中嵌入prolinyl组作为催化单位.
- 将功能组引入框架链接器以系统地修改孔隙环境.
- 在不对称的阿尔多尔反应中分析催化活性和酶子过量.
主要成果:
- 由于MUF-77的结构规律性,可以精确地定位单位催化剂.
- 孔隙结构的系统工程显著影响了反应速率和酶子过量.
- 工程空间环境可以覆盖催化剂的内在立体化学偏好.
结论:
- 在合成催化剂中设计三维活动场所环境的新方法已经开发出来.
- 在MOF中精确控制催化剂的微环境,可以微调催化结果.
- 这种策略为制造高效和选择性的人工酶开辟了新的途径.
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