光反应性状金属有机框架的构建及其 [2 + 2] 光环添加反应
Seulgi Kim1, Jaewook An2, Heekyoung Choi2
1Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, South Korea.
Inorganic chemistry
|August 8, 2023
概括
研究人员创建了性金属有机框架 (CMOFs),经历了 [2 + 2] 光环添加反应. 这些新型光反应性CMOF表现出可调节的反应性,为性网络材料开辟了新的途径.
科学领域:
- 晶体工程 晶体工程
- 材料科学是一种材料科学.
- 摄影化学的使用.
背景情况:
- 晶体金属有机框架 (CMOF) 和固态 [2 + 2] 光环化是晶体工程的关键领域.
- 这些领域在很大程度上是独立探索的.
研究的目的:
- 报告CMOF经历 [2 + 2] 光环添加反应的第一例.
- 为了构建和描述光反应性同体性 Zn(II) CMOFs.
- 为了研究溶剂去除对光反活性的影响.
主要方法:
- 将二氧化烯酸联体 (1,4-bis[2-(4-pyridyl) 乙烯]) 和酸反体纳入Zn(II) CMOFs.
- 两个步骤的合成程序,以2Dsql拓构建 homochiral 框架 (d-1 或 l-1),避免种族化.
- 溶剂去除以创建激活框架 (d-1a和l-1a) 用于光环添加研究.
主要成果:
- 构建了一对具有2D sql拓的同体基的Zn{\displaystyle \Zn}II) CMOFs (d-1和l-1).
- 最初的框架 (d-1, l-1) 是光惰性的,因为有很大的烯酸结合分离.
- 激活框架 (d-1a,l-1a) 在去除溶剂后经历了 [2 + 2] 循环添加.
- 与l-1a (20%) 相比,d-1a表现出更高的光反应性 (70%的转化),这是由于溶解引起的重新排列.
- 还研究了光发光的特性.
结论:
- 演示了第一个能够进行 [2 + 2] 光环添加的光反应性CMOF的例子.
- 框架溶解对于使光环添加反应成为可能至关重要.
- 反应性取决于特定的性框架和溶解过程.
- 介绍了一种具有潜在应用的新一类光反应性同人体网络材料.
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