Porous Organic Salts: Diversifying Void Structures and Environments
Porous Organic Salts: Diversifying Void Structures and Environments
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多孔有机盐：使空隙结构和环境多样化
DOI：
10.1002/ange.202202597
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发表时间：
2022
影响因子：
--
通讯作者：
Tohnai Norimitsu
中科院分区：
文献类型：
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作者：
Ami Takahiro;Oka Kouki;Tsuchiya Keiho;Tohnai Norimitsu
多孔性有机盐(POSS)是各种芳香族磺酸和胺类化合物通过电荷辅助氢键自组装而成的多孔性有机材料。POSS在高极性溶剂中具有很高的溶解度。因此，它们是通过容易重结晶制备的，并具有很高的可回收性。在本研究中，将四面体结构的四磺酸和三苯基甲胺(TPMA)相结合，构建了具有刚性钻石网络的POSS，称为钻石状多孔有机盐(d-POSS)。此外，通过在TPMA的苯环对位引入取代基(如F、Cl、Br或I)，这些取代基暴露在d-POSS的空隙表面，其钻石网络被扭曲。这导致了THED-POSS中各种孔洞结构和环境的形成，这对其气体吸附行为产生了显著的影响。特别是，在全有机多孔材料中，氟取代的聚甲基丙烯酸甲酯对182 mL(STP) g−1 at 1 atm表现出很高的CO2吸附能力。
Porous organic salts (POSs) are porous organic materials, in which various aromatic sulfonic acids and amines are regularly self‐assembled by charge‐assisted hydrogen bonding. POSs exhibit high solubility in highly polar solvents. Therefore, they are prepared via facile recrystallization and exhibit high recyclability. In this study, tetrahedral‐structured tetrasulfonic acid and triphenylmethylamine (TPMA) were combined to construct POSs with rigid diamond networks called diamondoid porous organic salts (d‐POSs). Furthermore, by introducing substituents (e.g., F, Cl, Br, or I) at thepara‐positions of benzene rings of TPMA, these substituents were exposed on the void surface ofd‐POSs, and their diamond networks were distorted. This induced the formation of a variety of void structures and environments in thed‐POSs, which significantly affected their gas adsorption behavior. In particular, thed‐POS from TPMA substituted by fluorine exhibited very high CO2adsorption of 182 mL(STP) g−1at 1 atm in all‐organic porous materials.