Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States.
Inorg Chem. 2010 Dec 20;49(24):11637-42. doi: 10.1021/ic101935f. Epub 2010 Nov 17.
By using Zn(4)O(CO(2))(6) as secondary building units (SBUs) and two extended ligands containing amino functional groups, TATAB and BTATB (TATAB = 4,4',4''-s-triazine-1,3,5-triyltri-p-aminobenzoate and BTATB = 4,4',4''-(benzene-1,3,5-triyltris(azanediyl))tribenzoate), two isostructural mesoporous metal-organic frameworks (MOFs) with cavities up to 2.73 nm, designated as PCN-100 and PCN-101 (PCN represents porous coordination network), have been synthesized. N(2) sorption isotherms of both PCN-100 and -101 showed typical type IV behavior, indicating their mesoporous nature. The TATAB ligand that comprises PCN-100 was employed to capture heavy metal ions (Cd(II) and Hg(II)) by constructing complexes within the pores with a possible coordination mode similar to that found in aminopyridinato complexes. This reveals that mesoporous materials such as PCN-100 can be applied in the elimination of heavy metal ions from waste liquid. In addition, both PCNs-100 and -101 exhibit size-selective catalytic activity toward the Knoevenagel condensation reaction.
使用 Zn(4)O(CO(2))(6) 作为二级建筑单元 (SBUs) 和两个含有氨基官能团的扩展配体，TATAB 和 BTATB（TATAB = 4,4',4''-s-triazine-1,3,5-triyltri-p-aminobenzoate 和 BTATB = 4,4',4''-(benzene-1,3,5-triyltris(azanediyl))tribenzoate），合成了两个具有空腔尺寸高达 2.73nm 的同构介孔金属-有机骨架 (MOF)，分别命名为 PCN-100 和 PCN-101（PCN 代表多孔配位网络）。PCN-100 和 -101 的 N(2) 吸附等温线均表现出典型的 IV 型行为，表明它们具有介孔性质。包含在 PCN-100 中的 TATAB 配体通过在孔内构建配合物来捕获重金属离子（Cd(II) 和 Hg(II)），其可能的配位模式与氨基吡啶基配合物中发现的模式相似。这表明介孔材料如 PCN-100 可应用于从废液中去除重金属离子。此外，PCN-100 和 -101 对 Knoevenagel 缩合反应均表现出尺寸选择性催化活性。
