近日，中国科学技术大学江海龙团队实现了将官能团引入B←N具有永久孔隙的有机框架。2025年5月20日出版的《德国应用化学》杂志发表了这一最新研究成果。

含有dative B的结晶有机框架←N键和可逆B-O键（BNOFs）因其结晶度、孔隙率和加工性而引起了越来越多的关注。然而，将功能引入BNOFs的策略在很大程度上仍未得到探索。在这项工作中，使用混合单体组装策略设计并合成了一系列功能化的BNOF-n（n=2-9）。所获得的材料具有结构相似性，但显示出不同的官能团，表现出优异的化学稳定性、高比表面积和显著的可再生性。 

值得注意的是，BNOF-5具有丰富的羧基功能，实现了卓越的可逆NH₃吸附能力（在1巴和298 K下高达10.0 mmol g⁻¹），显著超过了未功能化的BNOF-1（5.6 mmol g⁻¹）和功能化程度较低的BNOF-7（7.9 mmol g⁻¹），从而清楚地证明了功能化策略的有效性。值得注意的是，受损的BNOF-5可以通过简单的再生有效地修复，突出了其出色的可回收性。这项工作展示了BNOFs功能化方法的首次尝试，将其潜力扩展到各种应用中。

附：英文原文

Title: Introducing Functional Groups into B←N Organic Frameworks with Permanent Porosity

Author: Huifang Zhou, Tiantian Jiang, Kangjian Fu, Xinyu Guan, Shilin Guan, Bo Liu, Hai-Long Jiang

Issue&Volume: 2025-05-20

Abstract: Crystalline organic frameworks incorporating dative B←N and reversible B–O bonds (BNOFs) have garnered increasing interest on account of their crystallinity, porosity and processability. However, strategies for introducing functions into BNOFs remain largely unexplored. In this work, a series of functionalized BNOFs, named BNOF-n (n = 2–9), have been designed and synthesized using a mixed-monomer assembly strategy. The obtained materials share structural similarities but reveal distinct functional groups, demonstrating excellent chemical stability, high surface areas, and remarkable regenerability. Notably, BNOF-5, functionalized with abundant carboxyl groups, achieves exceptional reversible NH3 adsorption capacity (up to 10.0 mmol g1 at 1 bar and 298 K), significantly surpassing that of the non-functionalized BNOF-1 (5.6 mmol g1) and the less-functionalized BNOF-7 (7.9 mmol g1), thereby clearly demonstrating the effectiveness of the functionalization strategy. Remarkably, the damaged BNOF-5 can be efficiently repaired through facile regeneration, highlighting its outstanding recyclability. This work demonstrates the first attempt of functionalization methodology in BNOFs, extending their potential toward diverse applications.

DOI: 10.1002/anie.202509174

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202509174