Song Tian-Qun, Dong Jie, Gao Hong-Ling, Cui Jian-Zhong, Zhao Bin
Department of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Tianjin University, Tianjin 300072, P. R. China.
Dalton Trans. 2017 Oct 17;46(40):13862-13868. doi: 10.1039/c7dt02819a.
A novel zinc-organic framework, {[Zn(tza)(μ-OH)(HO)]·HO} (1) (Htza = 1H-tetrazolate-5-acetic acid), was synthesized through an in situ generated tetrazole ligand under hydrothermal conditions. In compound 1, tza ligands and Zn are interlinked to form 2D layers, which are further pillared through μ-OH groups to generate a 3D framework. Thermogravimetric analysis and powder X-ray diffraction confirm that 1 has high thermal stability, pH stability and solvent stability. Catalytic studies show that 1 exhibits excellent catalytic ability for the cycloaddition of CO with epoxides under 50 °C and 0.1 MPa. Importantly, 1 can be reused at least six times. Furthermore, luminescence investigations indicate that 1 can serve as a recyclable luminescence sensor to efficiently detect CrO/CrO, and the detection limit can reach 10 mol L and 4 × 10 mol L, respectively.
通过水热条件下原位生成的四唑配体合成了一种新型锌有机框架{[Zn(tza)(μ-OH)(HO)]·HO} (1)（Htza = 1H-四唑-5-乙酸）。在化合物1中，tza配体与锌相互连接形成二维层，这些二维层通过μ-OH基团进一步支撑形成三维框架。热重分析和粉末X射线衍射证实1具有高热稳定性、pH稳定性和溶剂稳定性。催化研究表明，1在50℃和0.1MPa条件下对CO与环氧化物的环加成反应表现出优异的催化能力。重要的是，1至少可以重复使用六次。此外，发光研究表明，1可以作为可回收的发光传感器有效检测CrO/CrO，检测限分别可达10 mol L和4×10 mol L。
