寻求高度连接的金属有机框架平台:稀土多核集群的多功能性满足了净拓需求
Dalal Alezi1, Abdul Malik P Peedikakkal1, Łukasz J Weseliński1
1†Functional Materials Design, Discovery and Development Research Group (FMD3), Advanced Membranes and Porous Materials Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
Journal of the American Chemical Society
|April 9, 2015
概括
研究人员开发了具有独特拓的新型高度连接的稀土金属有机框架 (MOF). 这些新的MOF显示出对气体分离和储存应用的前景,特别是对CO2和CH4.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 控制高度多孔的稀土 (RE) 基金属有机框架 (MOFs) 的组装是材料科学中的一个重大挑战.
- 开发新的,高度连接的网络拓对于设计先进的功能材料至关重要.
研究的目的:
- 探索基于稀土的金属有机框架 (MOF) 的新拓网.
- 合成和描述具有高连接性的新型MOF,并研究它们在气体储存和分离方面的潜力.
主要方法:
- 对稀土多核集群和有机配体进行拓分析,以预测网络形成.
- 合成金属有机框架 (MOFs) 使用特定的三碳酸连接物和稀土集群.
- 合成的MOFs的结构特征.
- 气体吸附研究,以评估气体分离和储存的性能.
主要成果:
- 发现了两种新的,高度连接的最小边际过渡网络:PEK和AEA.
- 成功合成了两个新的三周期MOF,pek-MOF-1和第二个MOF,利用非核和六核RE集群.
- 第一个稀土金属有机框架 (RE-MOF) 的隔离,其中包括双六环 (d6R) 二级建筑单元.
- pek-MOF-1在高压下表现出极好的体积二氧化碳和CH4吸收能力.
结论:
- 该研究提出了一个成功的策略,用于设计具有新型拓的高度连接的稀土金属有机框架 (RE-MOFs).
- 在使用超分子构建层方法的MOF设计中,d6R单元的整合代表了显著的进步.
- 合成的MOF显示出在气体分离和储存中实际应用的有希望的潜力.
相关概念视频
01:23Properties of Organometallic Compounds
2.2K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
2.2K
02:51Metal-Ligand Bonds
25.8K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
25.8K
02:37Metallic Solids
21.5K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
21.5K