Department of Chemistry, University of Central Florida, 4111 Libra Dr Orlando, FL 32816, USA.
Chem Commun (Camb). 2018 Jun 19;54(50):6947-6950. doi: 10.1039/c8cc04292f.
We present a family of covalent organic frameworks that have been functionalized with oligo-(ethylene oxide) chains of varying lengths. Because of the open structure of the COFs, the side chains do not interfere with their crystallization obtaining materials with predictable crystal structure. The difference in length of the side-chains allowed for the determination of amphidynamic behaviour with the use of 13C solid-state NMR relaxation methods. Computational calculations further contribute to understanding the atomistic dynamic behaviour of the different atoms. This study demonstrates the ability to design complex behaviour in organic crystals.
我们提出了一类用不同长度的寡（氧化乙烯）链官能化的共价有机骨架。由于 COFs 的开放结构，侧链不会干扰其结晶，从而获得具有可预测晶体结构的材料。侧链长度的差异允许使用 13C 固态 NMR 弛豫方法来确定两性动力学行为。计算计算进一步有助于理解不同原子的原子动态行为。这项研究证明了在有机晶体中设计复杂行为的能力。
