Smart Covalent Organic Frameworks with Intrapore Azobenzene Groups for Light-Gated Ion Transport

IF 7.2 2区材料科学 Q2 CHEMISTRY, PHYSICAL Chemistry of Materials Pub Date : 2022-10-11 DOI:10.1021/acs.chemmater.2c02239

Congcong Yin, Zhe Zhang, Zhenshu Si, Xiansong Shi* and Yong Wang*,

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引用次数: 6

Abstract

Constructing gated ion transport channels is of profound significance for a variety of applications but remains challenging. Covalent organic frameworks (COFs), as a new class of reticular materials, have demonstrated superiority in controllable transport and precise separation of fine species including ions. Herein, we engineer a light-responsive COF featuring intrapore azobenzene groups for highly efficient and adjustable transport of multivalent ions. Such azobenzene-tagged channels afford a customizable configuration that is precisely switchable at an angstrom level without compromising crystallinity. The membrane-shaped COFs exhibit an exceptional discrimination capability between monovalent and multivalent ions, rendering a K⁺/Al³⁺ selectivity of above 6000. Particularly, the azobenzene-decorated ordered nanochannels empower reversible, remote-controlled ion transport, implementing the tailor-made recycling of ionic adjuvants used for antibiotic production. This study reports the design and synthesis of a stimulus-responsive COF and demonstrates the efficient separation of ions by light-gated nanochannels of the smart COF.

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具有孔内偶氮苯基的智能共价有机框架用于光门控离子传输

构建门控离子传输通道对于各种应用具有深远的意义，但仍然具有挑战性。共价有机骨架(COFs)作为一类新型的网状材料，在离子等精细物质的可控输运和精确分离方面表现出了优势。在这里，我们设计了一种具有孔内偶氮苯基的光响应COF，用于高效和可调节的多价离子传输。这种偶氮苯标记的通道提供了一种可定制的配置，可以在埃水平上精确切换，而不影响结晶度。膜状COFs对一价离子和多价离子表现出优异的分辨能力，K+/Al3+的选择性在6000以上。特别是，偶氮苯修饰的有序纳米通道支持可逆的、远程控制的离子运输，实现了用于抗生素生产的离子佐剂的定制回收。本研究报道了一种刺激响应COF的设计和合成，并证明了智能COF的光门控纳米通道对离子的有效分离。

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来源期刊

Chemistry of Materials 工程技术-材料科学：综合

CiteScore

14.10

自引率

5.80%

发文量

929

审稿时长

1.5 months

期刊介绍： The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.