Li Lina, Cai Kun, Wang Pengyuan, Ren Hao, Zhu Guangshan
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University , Changchun, China.
ACS Appl Mater Interfaces. 2015 Jan 14;7(1):201-8. doi: 10.1021/am505697f. Epub 2014 Dec 22.
Porous organic frameworks (POFs), with their excellent performance in catalysis, electricity, sensor, gas storage, and separation, have attracted a great deal of attention from researchers all over the world. Generally, the monomers of POF materials require a rigid three-dimensional molecule configuration together with special functional groups, as well as being triggered by noble metal catalysts. Here we report a low-cost and easy-construction strategy for synthesizing PAF materials. A series of flat multi-benzene compounds are selected as building units, and those phenyl rings could couple together to form polymeric skeletons. The BET surface areas of resulting PAFs are moderate, ranging from 777 to 972 m(2) g(-1). However, they unexpectedly exhibit superior gas sorption capacities. At 1.0 bar and 77 K, the H2 uptake of PAF-48 reaches 215 cm(3) g(-1). In addition, PAF-49 shows excellent performance in carbon dioxide and methane sorption, with values of 104 and 35 cm(3) g(-1), respectively. With those adsorption properties, these PAF materials could be considered as potential candidates for energetic gas adsorbents.
多孔有机框架材料（POFs）因其在催化、电学、传感、气体存储和分离等方面的优异性能，已引起了全球研究人员的广泛关注。一般来说，POF材料的单体需要具有刚性的三维分子构型以及特殊的官能团，并且需要由贵金属催化剂引发反应。在此，我们报道了一种低成本且易于构建的合成PAF材料的策略。一系列扁平的多苯化合物被选作构建单元，这些苯环可以耦合在一起形成聚合物骨架。所得PAF的比表面积适中，范围为777至972 m² g⁻¹。然而，它们出人意料地表现出优异的气体吸附能力。在1.0 bar和77 K下，PAF - 48对氢气的吸附量达到215 cm³ g⁻¹。此外，PAF - 49在二氧化碳和甲烷吸附方面表现出色，吸附量分别为104和35 cm³ g⁻¹。基于这些吸附特性，这些PAF材料可被视为高能气体吸附剂的潜在候选材料。
