3D Microporous Base-Functionalized Covalent Organic Frameworks for Size-Selective Catalysis
3D Microporous Base-Functionalized Covalent Organic Frameworks for Size-Selective Catalysis
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用于尺寸选择性催化的 3D 微孔碱官能化共价有机框架
DOI：
10.1002/anie.201310500
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发表时间：
2014-03-10
影响因子：
16.6
通讯作者：
Yan, Yushan
中科院分区：
文献类型：
--
作者：
Fang, Qianrong;Gu, Shuang;Yan, Yushan
三维共价有机骨架（COF）的设计和合成一直被认为是一个挑战，迄今为止，三维COF的应用仅限于气体吸附。本文中，我们描述了两种新的3D微孔碱官能化COF的设计和合成，称为BF-COF-1和BF-COF-2，通过使用四面体烷基胺，1，3，5，7-四氨基金刚烷（TAA），与1，3，5-三甲酰苯（TFB）或三甲酰间苯三酚（TFP）组合。作为催化剂，两种BF-COF在碱催化的Knoevenagel缩合反应中显示出显著的转化率（BF-COF-1为96%，BF-COF-2为98%）、高尺寸选择性和良好的可循环性。这项研究表明，多孔功能化的三维COFs可能是一类有前途的新型择形催化剂。
The design and synthesis of 3D covalent organic frameworks (COFs) have been considered a challenge, and the demonstrated applications of 3D COFs have so far been limited to gas adsorption. Herein we describe the design and synthesis of two new 3D microporous base-functionalized COFs, termed BF-COF-1 and BF-COF-2, by the use of a tetrahedral alkyl amine, 1,3,5,7-tetraaminoadamantane (TAA), combined with 1,3,5-triformylbenzene (TFB) or triformylphloroglucinol (TFP). As catalysts, both BF-COFs showed remarkable conversion (96% for BF-COF-1 and 98% for BF-COF-2), high size selectivity, and good recyclability in base-catalyzed Knoevenagel condensation reactions. This study suggests that porous functionalized 3D COFs could be a promising new class of shape-selective catalysts.