Liu Wei, Huang Xin, Xu Cong, Chen Chunyang, Yang Lizi, Dou Wei, Chen Wanmin, Yang Huan, Liu Weisheng
Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China.
Chemistry. 2016 Dec 23;22(52):18769-18776. doi: 10.1002/chem.201603607. Epub 2016 Nov 17.
A novel luminescent microporous lanthanide metal-organic framework (Ln-MOF) based on a urea-containing ligand has been successfully assembled. Structural analysis revealed that the framework features two types of 1D channels, with urea N-H bonds projecting into the pores. Luminescence studies have revealed that the Ln-MOF exhibits high sensitivity, good selectivity, and a fast luminescence quenching response towards Fe , Cr anions, and picric acid. In particular, in the detection of Cr O and picric acid, the Ln-MOF can be simply and quickly regenerated, thus exhibiting excellent recyclability. To the best of our knowledge, this is the first example of a multi-responsive luminescent Ln-MOF sensor for Fe , Cr anions, and picric acid based on a urea derivative. This Ln-MOF may potentially be used as a multi-responsive regenerable luminescent sensor for the quantitative detection of toxic and harmful substances.
一种基于含尿素配体的新型发光微孔镧系金属有机框架（Ln-MOF）已成功组装。结构分析表明，该框架具有两种类型的一维通道，尿素N-H键伸向孔中。发光研究表明，Ln-MOF对Fe 、Cr 阴离子和苦味酸表现出高灵敏度、良好的选择性和快速的发光猝灭响应。特别是，在检测Cr O 和苦味酸时，Ln-MOF可以简单快速地再生，从而表现出优异的可回收性。据我们所知，这是基于尿素衍生物的用于Fe 、Cr 阴离子和苦味酸的多响应发光Ln-MOF传感器的首个实例。这种Ln-MOF有可能用作多响应可再生发光传感器，用于定量检测有毒有害物质。
