Journal
NATIONAL SCIENCE REVIEW
Volume 7, Issue 1, Pages 170-190Publisher
OXFORD UNIV PRESS
DOI: 10.1093/nsr/nwz122
Keywords
covalent organic frameworks; crystalline materials; porous materials; postsynthetic functionalization
Categories
Funding
- National Natural Science Foundation of China [21571079, 21621001, 21390394, 21571076, 21571078]
- Overseas Expertise Introduction Project for Discipline Innovation [B07016, B17020]
- Program for Jilin University Science and Technology Innovative Research Team
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Covalent organic frameworks (COFs) have been at the forefront of porous-material research in recent years. With predictable structural compositions and controllable functionalities, the structures and properties of COFs could be controlled to achieve targeted materials. On the other hand, the predesigned structure of COFs allows fruitful postsynthetic modifications to introduce new properties and functions. In this review, the postsynthetic functionalizations of COFs are discussed and their impacts towards structural qualities and performances are comparatively elaborated on. The functionalization involves the formation of specific interactions (covalent or coordination/ionic bonds) and chemical reactions (oxidation/reduction reaction) with pendant groups, skeleton and reactive linkages of COFs. The chemical stability and performance of COFs including catalytic activity, storage, sorption and opto-electronic properties might be enhanced by specific postsynthetic functionalization. The generality of these strategies in terms of chemical reactions and the range of suitable COFs places them as a pivotal role for the development of COF-based smart materials.
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