Rapid Preparation of beta-Ketoenamine-based Covalent Organic Frameworks (COFs) via Amino-yne Click Polymerization

As a new class of crystalline porous organic polymer materials, covalent organic frameworks (COFs) have permanent porosity and broad application prospects. The synthesis of COFs has strict requirements for both the reaction equations and the reaction conditions. Therefore, it is critical for researchers to develop new, scalable synthetic reactions. In this work, for the first time, we report an in-situ synthetic strategy toward COFs via the amino-yne click polymerization by taking advantage of its produced dynamic beta-ketoenamine bond. This strategry also enjoys the advantages of high efficiency and atomic economy. The crystallinity and BET measurements indicated that the resultant COFs have excellent crystallinity and high porosity. Thus, this work not only provides a new strategy for the rapid preparation of COFs with excellent atom economy, but also enriches their family.