Henan Key Laboratory of Polyoxometalate, Institute of Molecule and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University , Kaifeng 475004, P. R. China.
ACS Appl Mater Interfaces. 2017 May 24;9(20):17208-17217. doi: 10.1021/acsami.7b01758. Epub 2017 May 9.
Two metal-organic frameworks (MOFs), namely, [Ni(DTP)(HO)] (I) and [Cd(DTP)(bibp)] (II) (HDPT = 4'-(4-(3,5-dicarboxylphenoxy) phenyl)-4,2':6',4″-terpyridine; bibp = 1,3-di(1H-imidazol-1-yl)propane), that present structural diversity were solvothermally prepared. Single-crystal X-ray diffraction analysis indicates that they consist of {NiNO} building units (for I) and {CdON} and {CdON} building units (for II), which are further linked by multicarboxylate HDPT to construct microporous three-dimensional frameworks. The remarkable character of these frameworks is that coordination polymer II demonstrates highly selective and sensitive bifunctional luminescent sensor toward nitrobenzene and Cu ion. The fluorescence quenching mechanism of II caused by nitrobenzene is ascribed to electron transfer from electron-rich (II) to electron-deficient nitrobenzene. The result was also evidenced by the density functional theory. Furthermore, anti-ferromagnetic as well as electrochemical characters of Ni-MOF (I) were also investigated in this paper.
两种金属有机骨架（MOFs），即[Ni(DTP)(HO)]（I）和[Cd(DTP)(bibp)]（II）（HDPT=4'-(4-(3,5-二羧基苯氧基)苯基)-4,2':6',4″-三联吡啶；bibp=1,3-二(1H-咪唑-1-基)丙烷），具有结构多样性，通过溶剂热法制备。单晶 X 射线衍射分析表明，它们由{NiNO}构建单元（对于 I）和{CdON}和{CdON}构建单元（对于 II）组成，这些构建单元进一步通过多羧酸 HDPT 连接，构建微孔三维框架。这些框架的显著特点是，配位聚合物 II 对硝基苯和 Cu 离子表现出高度选择性和灵敏的双功能发光传感器。II 对硝基苯的荧光猝灭机制归因于富电子（II）向缺电子硝基苯的电子转移。这一结果也得到了密度泛函理论的证实。此外，本文还研究了 Ni-MOF（I）的反铁磁和电化学性质。
