分子构建块逐步转化为一个包装氨酸的金属有机材料
Zhenjie Zhang1, Lukasz Wojtas, Mohamed Eddaoudi
1Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, CHE205, Tampa, Florida 33620, USA.
Journal of the American Chemical Society
|April 4, 2013
概括
一种金属有机材料将其分子构建块 (MBBs) 从转化为铜,创造出具有增强孔隙性和表面积的新材料 (P11-Cu). 这种单晶转换为材料设计提供了新的可能性.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 微孔金属有机材料为各种应用提供可调节的性能.
- 了解这些材料内部的转变是设计新功能结构的关键.
研究的目的:
- 研究一种基于的金属有机材料 (P11) 转化为含铜的类似物 (P11-Cu).
- 阐明这个单晶转化为单晶的逐步机制.
- 为了描述由此产生的铜材料的结构和多孔性变化.
主要方法:
- 用单晶X射线衍射来研究这种转变.
- 11的晶体被浸入各种比例的 (Cd(2+)) 和铜 (Cu(2+)) 离子的溶液中.
- 包括P11-16/1在内的中间阶段被隔离并进行结构性特征.
主要成果:
- 该转换涉及将基于的分子构建块 (MBB) 替换为基于铜的新型MBB ([Cu4X2(COO) 6(S) 2).
- 该过程以单晶到单晶的方式发生,允许进行详细的机械学研究.
- 与P11相比,得到的P11-Cu材料表现出20%的单元细胞扩张,增加的表面积和更大的孔径.
结论:
- 该研究成功地证明了金属有机物质通过阴子交换的受控单晶转化.
- 新的铜基MBB的形成导致了显著的结构和孔隙性增强.
- 这项工作提供了对金属有机框架的动态行为的洞察,以及它们在创建先进的多孔材料方面的潜力.
相关概念视频
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Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
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