机械化学合成化学稳定的异构型共价有机框架
Bishnu P Biswal1, Suman Chandra, Sharath Kandambeth
1Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.
Journal of the American Chemical Society
|March 26, 2013
概括
机械化学研磨提供了一种无溶剂的途径来合成稳定的共价有机框架 (COF). 这种方法产生了具有石墨烯类脱皮层的COF,表现出了显著的热和化学耐受性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 有机化学 有机化学
背景情况:
- 聚合有机框架 (COF) 是晶体多孔聚合物.
- 传统的合成方法通常涉及溶解热过程,需要溶剂和高温.
- 为COF开发无溶剂和节能合成路径至关重要.
研究的目的:
- 通过无溶剂的机械化学方法合成异构共价有机框架 (COFs).
- 为了比较机械化学合成的COF的特性和结构与它们的溶热合成对应物.
- 研究由此产生的COF的稳定性和形态.
主要方法:
- 室温机械化学研磨被用于COF合成.
- 使用无溶剂研磨,与传统的溶热法形成鲜明对比.
- 鉴定包括评估结晶性,热稳定性和耐化学物质.
主要成果:
- 通过机械化学研磨成功合成了三种热和化学稳定的异构形COF.
- 机械化学合成的COF表现出中度的结晶性和在沸水,强酸和强中显著的稳定性.
- 在合成过程中,COF层的同时脱皮导致了类似石墨烯的多层形态.
结论:
- 机械化学研磨提供了一种高效,无溶剂的途径,用于生产强大的COF.
- 这种方法产生了具有增强层次形态和高稳定性的COF.
- 这些发现为可扩展和可持续的COF生产开辟了道路.
相关概念视频
02:34Structural Isomerism
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
01:23Properties of Organometallic Compounds
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.