Abstract

Two new metal-organic frameworks with the formulas of [Zn(L)(4,4′-bipy)_0.5]_n (1) and [Cd(L)]_n·0.5n(H₂O) (2) (H₂L = 5-(pyridine-2-ylmethoxy)-isophthalic acid, 4,4′-bipy = 4,4′-bipyridine) have been hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction analyses. Compound 1 features a 2-fold interpenetrated three-dimensional (3D) framework with (3,4)-connected sqc1387-type net topology, and compound 2 features a two-dimensional (2D) wavy layer with (3,6)-connected kgd-type net topology, which further stacked together under weak Van der Waals forces, generating a 2D→3D interdigitated supramolecular framework. The luminescent experiments revealed that these two compounds display intense blue luminescence at room temperature.

摘要

两种新的金属有机骨架，其分子式为 [Zn(L)(4,4'-bipy) _0.5 ] _n ( 1 ) 和 [Cd(L)] _n ·0.5n(H ₂ O) ( 2 ) (H ₂ L = 5-(吡啶-2-基甲氧基)-间苯二甲酸，4,4'-bipy = 4,4'-联吡啶) 已通过水热合成并通过单晶 X 射线衍射分析进行结构表征。化合物1具有具有 (3,4) 连接的sqc1387型网络拓扑的 2 重互穿三维 (3D) 框架，化合物2具有具有 (3,6) 连接的二维 (2D) 波浪层公斤型网络拓扑结构，在弱范德华力下进一步堆叠在一起，生成 2D→3D 叉指超分子框架。发光实验表明，这两种化合物在室温下显示出强烈的蓝色发光。