烷基
共价键
结晶度
化学稳定性
异丙基
化学
有机化学
高分子化学
材料科学
化学工程
结晶学
工程类
作者
Yunchao Ma,Yujie Wang,Hui Li,Xinyu Guan,Baoju Li,Ming Xue,Yushan Yan,Valentin Valtchev,Shilun Qiu,Qianrong Fang
标识
DOI:10.1002/anie.202005277
摘要
Abstract The development of three‐dimensional (3D) covalent organic frameworks (COFs) with high chemical stability is of critical importance for their practical use. In this work, it is demonstrated that the stability of 3D COFs can be improved by periodic decoration of isopropyl groups on their backbones. Owing to the strong hydrophobicity of the alkyl groups, the resultant COFs show high crystallinity, permanent pores, and exceptional stability in harsh environments, such as strong acids (3 m HCl or 3 m H 2 SO 4 for one week), a strong base (20 m NaOH for one week), and boiling water (100 °C for one month). Furthermore, these highly stable and hydrophobic COFs display excellent oil/water separation performance with >99 % separation efficiency over a wide pH range. This work demonstrates the use of alkyl decoration in 3D COFs to tune their chemical stability and expand their potential applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI