Chen Pei, Su Xi, Wang Chuanzhe, Zhang Guang, Zhang Ting, Xu Gang, Chen Long
Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, China.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou, Fujian, 350108, China.
Angew Chem Int Ed Engl. 2023 Oct 2;62(40):e202306224. doi: 10.1002/anie.202306224. Epub 2023 Jun 27.
The emergence of two-dimensional conjugated metal-organic frameworks (2D c-MOFs) with pronounced electrical properties (e.g., high conductivity) has provided a novel platform for efficient energy storage, sensing, and electrocatalysis. Nevertheless, the limited availability of suitable ligands restricts the number of available types of 2D c-MOFs, especially those with large pore apertures and high surface areas are rare. Herein, we develop two new 2D c-MOFs (HIOTP-M, M=Ni, Cu) employing a large p-π conjugated ligand of hexaamino-triphenyleno[2,3-b:6,7-b':10,11-b'']tris[1,4]benzodioxin (HAOTP). Among the reported 2D c-MOFs, HIOTP-Ni exhibits the largest pore size of 3.3 nm and one of the highest surface areas (up to 1300 m g ). As an exemplary application, HIOTP-Ni has been used as a chemiresistive sensing material and displays high selective response (405 %) and a rapid response (1.69 min) towards 10 ppm NO gas. This work demonstrates significant correlation linking the pore aperture of 2D c-MOFs to their sensing performance.
具有显著电学性质（如高导电性）的二维共轭金属有机框架材料（2D c-MOFs）的出现，为高效能量存储、传感和电催化提供了一个新平台。然而，合适配体的有限可用性限制了可用的2D c-MOFs类型的数量，特别是那些具有大孔径和高比表面积的材料很少见。在此，我们使用六氨基三亚苯基[2,3-b:6,7-b':10,11-b'']三[1,4]苯并二恶英（HAOTP）这种大的p-π共轭配体开发了两种新的2D c-MOFs（HIOTP-M，M = Ni，Cu）。在已报道的2D c-MOFs中，HIOTP-Ni展现出3.3 nm的最大孔径和最高比表面积之一（高达1300 m² g⁻¹）。作为一个示例性应用，HIOTP-Ni已被用作化学电阻传感材料，对10 ppm的NO气体显示出高选择性响应（405 %）和快速响应（1.69 min）。这项工作证明了2D c-MOFs的孔径与其传感性能之间存在显著关联。
