Multidentate organic ligand with bridged and chelated functions is firstly developed to build cluster-based metal–organic framework. N-donating multidentate ligand 4-phenyl-2,6-bis(2′-pyrazinyl)pyridine (PBPP) is deliberately selected to construct a unique metal–organic framework {[WS₄Cu₄I₄[Ni(PBPP)₂]]₂·DMF]}_n (1) (DMF = N,N′-dimethylformamide). X-ray structure analysis reveals that 1 exhibits a 2D (6,3) graphene-like network, fabricated by rare pentanuclear [WS₄Cu₄]²⁺ building clusters, Ni²⁺ building metals, bridged and chelated PBPP and terminal I⁻. 1 has good water stability and luminescence. More importantly, the detection performance of 1 is explored through luminescence quenching effect, which reveals that 1 can detect 2,4,6-trinitrophenol (TNP) with high sensitivity and selectivity. The sensing mechanism has also been studied.

具有桥联和螯合功能的多齿有机配体首先被开发来建立基于团簇的金属有机框架。特意选择供氮的多齿配体4-苯基-2,6-双（2'-吡嗪基）吡啶（PBPP），以构建独特的金属-有机骨架{[WS ₄ Cu ₄ I ₄ [Ni（PBPP）₂ ] ] ₂ ·DMF]} _n（1）（DMF ＝ N，N′-二甲基甲酰胺）。X射线结构分析显示1表现出由稀有五核[WS ₄ Cu ₄ ] ²⁺建筑簇，Ni ^2+组成的2D（6,3）石墨烯状网络。建筑金属，桥接和螯合PBPP和终端I ^- 。1.具有良好的水稳定性和发光性。更重要的是，通过发光猝灭效应来探索1的检测性能，这表明1可以高灵敏度和选择性地检测2,4,6-三硝基苯酚（TNP）。还已经研究了感测机制。