一种具有三核和四核锌簇二级结构单元的多功能纳米笼基金属有机框架。

A Multifunctional Nanocage-based MOF with Tri- and Tetranuclear Zinc Cluster Secondary Building Units.

作者信息

Zhou Zhongyuan, Xing Xiushuang, Tian Chongbin, Wei Wei, Li Dejing, Hu Falu, Du Shaowu

机构信息

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P.R. China.

University of Chinese Academy of Sciences, Beijing, 100039, P.R. China.

出版信息

Sci Rep. 2018 Feb 15;8(1):3117. doi: 10.1038/s41598-018-21382-1.

A new Zn-cluster based MOF, [Zn(BTC)(μ-OH)(μ-O)(HO)]·21EtOH (1) (HBTC = 1,3,5-benzenetricarboxylic acid), with two different types of cluster nodes has been successfully synthesized from Zn and HBTC under the solvothermal conditions. Single crystal X-ray diffraction studies reveal that 1 is a 3D trinodal (3,5,6)-c framework which features a large octahedral cage organized by nine ZnO and nine ZnO clusters SBUs and twenty-four triangular BTC linkers. The Eu/Tb-incorporated derivative of 1 with 0.251% Eu and 0.269% Tb exhibits tunable luminescence from yellow to white and then to blue-green by changing the excitation wavelength from 308 to 315 nm. Metal ion exchange with Cu affords isomorphous Cu-based MOF with enhanced N and CO adsorption capacity. In addition, 1 can act as a selective luminescent sensor for Cu and Al ions.

一种基于锌簇的新型金属有机框架化合物[Zn(BTC)(μ-OH)(μ-O)(HO)]·21EtOH (1)（HBTC = 1,3,5-苯三甲酸），在溶剂热条件下由锌和HBTC成功合成，具有两种不同类型的簇节点。单晶X射线衍射研究表明，1是一种三维三节点(3,5,6)-c框架，其特征是由九个ZnO和九个ZnO簇次级构筑单元以及二十四个三角形BTC连接体构成的大八面体笼。1的Eu/Tb掺入衍生物，Eu含量为0.251%，Tb含量为0.269%，通过将激发波长从308 nm改变到315 nm，表现出从黄色到白色再到蓝绿色的可调发光。与铜进行金属离子交换可得到具有增强的N和CO吸附能力的同构铜基金属有机框架化合物。此外，1可以作为铜离子和铝离子的选择性发光传感器。