Permanently Porous Co(II) Porphyrin-Based Hydrogen Bonded Framework for Gas Adsorption and Catalysis
作者:Zengqi Zhang、Jun Li、Yahong Yao、Shu Sun
DOI:10.1021/acs.cgd.5b00987
日期:2015.10.7
A new microporous hydrogen-bonded organic framework (HOF) based on a cobalt(II) porphyrin, namely, Co(II) 5,10,15,20-tetra(4-(4-acetateethyl)phenoxy)phenylporphyrin (1), has been synthesized and structurally characterized. Single crystal X-ray diffraction analysis reveals that porphyrin molecules connect each other by intermolecular hydrogen bonds to form 2D layer, and the 2D layer further links though π···π interactions to form 3D supramolecular structure, exhibiting one kind of micropore with 3.98 × 6.47 Å2. The HOF of 1 exhibits not only a permanent porosity with the Langmuir surface areas of 158.79 m2·g–1, and the Brunauer–Emmett–Teller surface areas of 97.70 m2·g–1, but also, more importantly, high catalytic efficiency and selectivity for oxidation of ethylbenzene to acetophenone in quantitative 83.1% yield.
一种基于钴(II)卟啉的新型微孔氢键有机骨架(HOF),即Co(II) 5,10,15,20-四(4-(4-乙酰乙基)苯氧基)苯基卟啉(1),已被合成并进行了结构表征。单晶X射线衍射分析表明,卟啉分子通过分子间氢键相互连接形成2D层,2D层进一步通过π·π相互作用连接形成3D超分子结构,呈现出一种孔径为3.98×的微孔。 6.47 Å2。 1的HOF不仅表现出永久孔隙率,Langmuir表面积为158.79 m2·g–1,Brunauer-Emmett-Teller表面积为97.70 m2·g–1,而且更重要的是,具有高催化效率和乙苯氧化成苯乙酮的选择性,定量产率为 83.1%。