A Fully Saturated Covalent Organic Framework.

IF 14.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Journal of the American Chemical Society Pub Date : 2024-11-13 Epub Date: 2024-10-31 DOI:10.1021/jacs.4c13256
Junyu Ren, Chunqing Ji, Bowen Du, Qixing Liu, Kexin Yu, Dohyun Ahn, Zhenyu Zhang, Yingxiang Ye, Christian R Göb, Dan Zhao
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Abstract

We report the design and synthesis of the first aliphatic covalent organic framework (COF), NUS-119, and its subsequent conversion to NUS-120, marking the first fully saturated COF. NUS-119 is built by imine-linkages exhibiting high crystallinity and porosity, achieved by using a Lewis acid as a reaction modulator to circumvent compatibility issues between the Brønsted acid and the strong basic monomer. The structure was successfully solved using 3D microelectron diffraction (microED) techniques. NUS-119 and NUS-120 demonstrated remarkable catalytic performance in base-catalyzed Knoevenagel condensation reactions, exhibiting high conversion rates, excellent size selectivity, and good recyclability. This work advances the understanding of COF materials and paves the way for future research and applications.

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完全饱和的共价有机框架
我们报告了首个脂肪族共价有机框架(COF)NUS-119 的设计与合成,以及随后将其转化为 NUS-120 的过程,这是首个完全饱和的 COF。NUS-119 由亚胺连接而成,具有很高的结晶度和孔隙率,这是通过使用路易斯酸作为反应调节剂来规避布氏酸与强碱性单体之间的相容性问题而实现的。利用三维微电子衍射(microED)技术成功地解决了该结构的问题。NUS-119 和 NUS-120 在碱催化的克诺文纳格尔缩合反应中表现出显著的催化性能,具有高转化率、优异的尺寸选择性和良好的可回收性。这项工作加深了人们对 COF 材料的了解,为今后的研究和应用铺平了道路。
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来源期刊
CiteScore
24.40
自引率
6.00%
发文量
2398
审稿时长
1.6 months
期刊介绍: The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.
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