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Salicylideneanilines-Based Covalent Organic Frameworks as Chemoselective Molecular Sieves
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-06-23 00:00:00 , DOI: 10.1021/jacs.7b02696 Guo-Hong Ning 1 , Zixuan Chen 1 , Qiang Gao 1 , Wei Tang 2 , Zhongxin Chen 1 , Cuibo Liu 1 , Bingbing Tian 1 , Xing Li 1 , Kian Ping Loh 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-06-23 00:00:00 , DOI: 10.1021/jacs.7b02696 Guo-Hong Ning 1 , Zixuan Chen 1 , Qiang Gao 1 , Wei Tang 2 , Zhongxin Chen 1 , Cuibo Liu 1 , Bingbing Tian 1 , Xing Li 1 , Kian Ping Loh 1
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Porous materials such as covalent organic frameworks (COFs) are good candidates for molecular sieves due to the chemical diversity of their building blocks, which allows fine-tuning of their chemical and physical properties by design. Tailored synthesis of inherently functional building blocks can generate framework materials with chemoresponsivity, leading to controllable functionalities such as switchable sorption and separation. Herein, we demonstrate a chemoselective, salicylideneanilines-based COF (SA-COF), which undergoes solvent-triggered tautomeric switching. This is unique compared to solid-state salicylideneanilines’ counterpart, which typically requires high energy input such as photo or thermal activation to trigger the enol–keto tautomerisim and cis–trans isomerization. Accompanying the tautomerization, the ionic properties of the COF can be tuned reversibly, thus forming the basis of size-exclusion, selective ionic binding or chemoseparation in SA-COF demonstrated in this work.
中文翻译：
基于水杨基苯胺的共价有机骨架作为化学选择性分子筛
诸如共价有机骨架（COF）之类的多孔材料因其分子筛的化学多样性而成为分子筛的理想选择，这可以通过设计对其化学和物理特性进行微调。固有功能构建基块的定制合成可以生成具有化学响应性的框架材料，从而导致可控功能，例如可转换的吸附和分离。在这里，我们展示了一种基于化学选择性的，基于水杨基苯胺类化合物的COF（SA-COF），它经历了溶剂触发的互变异构转换。与固态水杨基苯胺的对应物相比，它是独特的，后者通常需要高能量输入，例如光或热活化来触发烯醇-酮互变异构和顺-反式异构化。伴随互变异构化，COF的离子性质可以可逆地进行调节，从而形成了SA-COF中尺寸排阻，选择性离子结合或化学分离的基础。
更新日期：2017-06-28
中文翻译：
基于水杨基苯胺的共价有机骨架作为化学选择性分子筛
诸如共价有机骨架（COF）之类的多孔材料因其分子筛的化学多样性而成为分子筛的理想选择，这可以通过设计对其化学和物理特性进行微调。固有功能构建基块的定制合成可以生成具有化学响应性的框架材料，从而导致可控功能，例如可转换的吸附和分离。在这里，我们展示了一种基于化学选择性的，基于水杨基苯胺类化合物的COF（SA-COF），它经历了溶剂触发的互变异构转换。与固态水杨基苯胺的对应物相比，它是独特的，后者通常需要高能量输入，例如光或热活化来触发烯醇-酮互变异构和顺-反式异构化。伴随互变异构化，COF的离子性质可以可逆地进行调节，从而形成了SA-COF中尺寸排阻，选择性离子结合或化学分离的基础。
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