Suebphanpho Jitti, Tunsrichon Sujitra, Zheng Xin, Chen Yun, Noro Shin-Ichiro, Boonmak Jaursup
Materials Chemistry Research Center, Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.
Inorg Chem. 2025 Jul 7;64(26):13094-13102. doi: 10.1021/acs.inorgchem.5c01229. Epub 2025 Jun 19.
A series of new microporous three-dimensional (3D) pillar-layered coordination polymers, including [Zn(pzt)(R-ipa)] (R = H (), NH (), and OH ()) and [Co(pzt)(ppa)] () (Hpzt = 5-(3-pyridyl)-1,3,4-oxadiazole-2-thiol, HR-ipa = 5-position-substituted isophthalic acid, and Hppa = 1,4-phenylenedipropionic acid), were synthesized using a solvothermal method. Single-crystal X-ray diffraction analysis revealed that , , , and exhibit an isoreticular framework. Through the bridging-chelating modes of different pillar dicarboxylates (R-ipa for and ppa for ), each coordination layer with heteroatom (N-, O-, and S-)-functionalized pzt ligands is extended into a 3D framework with one-dimensional (1D) channels. The altered pore characteristics, influenced by different functional groups of pillar dicarboxylate linkers, present unique hydrophilic and hydrophobic features of microporous CPs. PXRD and TG analyses confirmed the high stability of the porous structures after activation at 100 °C. The water vapor uptake capacities can be tuned from 33.0 to 68.0 cm (STP)/g at 298 K ( = 2.5 kPa), while the methanol vapor adsorption capacities are configurable from 14.0 to 46.3 cm (STP)/g at 298 K ( = 12 kPa). Different adsorption isotherms were examined, each associated with a specific type of guest molecule and the hydrophilic or hydrophobic nature of the pore structure.
通过溶剂热法合成了一系列新型微孔三维（3D）柱层状配位聚合物，包括[Zn(pzt)(R - ipa)]（R = H（）、NH（）和OH（））以及[Co(pzt)(ppa)]（）（Hpzt = 5 - (3 - 吡啶基)-1,3,4 - 恶二唑 - 2 - 硫醇，HR - ipa = 5 - 位取代间苯二甲酸，Hppa = 1,4 - 苯二丙酸）。单晶X射线衍射分析表明、、和呈现等规骨架结构。通过不同柱形二羧酸酯（用于的R - ipa和用于的ppa）的桥连螯合模式，每个带有杂原子（N -、O - 和S -）功能化pzt配体的配位层扩展为具有一维（1D）通道的3D骨架结构物结构。受柱形二羧酸酯连接体不同官能团影响，孔隙特征发生改变，呈现出微孔配位聚合物独特的亲水和疏水特性。粉末X射线衍射（PXRD）和热重（TG）分析证实了在100℃活化后多孔结构具有高稳定性水蒸气吸附容量可在298K（= 2.5kPa）下从33.0调节至68.0 cm³（STP）/g，而甲醇蒸气吸附容量在298K（= 12kPa）下可从14.0调节至46.3 cm³（STP）/g。研究了不同的吸附等温线，每种等温线都与特定类型的客体分子以及孔隙结构亲水性或疏水性相关。
