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A Versatile Protocol for Functionalization of Covalent Organic Frameworks via Suzuki-Miyaura Cross-Coupling

preprint
submitted on 13.09.2020 and posted on 15.09.2020 by Qiaobo Liao, Can Ke, Xin Huang, Dongni Wang, Qingwen Han, Yifan Zhang, Yiying Zhang, Kai Xi
Post-synthetic modification (PSM) is a prevalent and powerful strategy to introduce desired functionalities into covalent organic frameworks (COFs) for functional products, expediting their applications vastly. Herein, we demonstrate a PSM strategy for functionalizing brominated COFs via the well-developed Suzuki-Miyaura cross-coupling. By this protocol, a variety of functionalities were installed into COFs efficiently, while the crystallinity and porosity of COFs retained well. As a proof-of-concept, BrCOF-2 was modified with trifluoromethyl groups to produce a SF6 adsorbent with remarkably enhanced properties. This facile and versatile approach opens a new door for the synthesis of functional COFs, and greatly expands the scope of their structural design aiming for various properties and applications.

Funding

Shenzhen Science and Technology Innovation Committee (No. JCYJ20180307151441165)

Fundamental Research Funds for the Central Universities (No. 020514380221)

History

Email Address of Submitting Author

xikai@nju.edu.cn

Institution

Nanjing University

Country

P. R. China

ORCID For Submitting Author

0000-0002-8770-5956

Declaration of Conflict of Interest

There is no conflict of interest to declare.

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