A luminescent two-fold interpenetrated pillared-layer metal-organic framework for highly selective and sensitive sensing of Fe3

• Published in: Inorganic chemistry communications 2016-11, Vol.73, p.90-93
• Main Authors: Zhu, Xian-Dong, Zhang, Kun, Zhou, Wei-Xiang, Li, Qing-Hai, Fu, Ying-Qiang, Liu, Rong-Mei, Qian, Gui-Xiang
• Format: Article
• Language: English
• Subjects: Aromatic sulfonic ligand; Interpenetrated pillared-layer structure; Luminescent sensor; Metal-organic framework
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2016.10.009

A luminescent three-dimensional metal-organic framework generally formulated as [Zn2(OH)(sip)(bpe)(H2O)]H2O (1), has been hydrothermally synthesized and characterized. It represents a new two-fold interpenetrated pillared-layer framework with (63)(69·8) topology constructed from π-electron-rich rigid ligand 5-sulfoisophthalic acid coupled with auxiliary ligand 1,2-bis(4-pyridyl)ethane. Interestingly, the strong emission of 1 could be quenched efficiently by trace amounts of Fe3+ at room temperature, even in the presence of other competing analogues, which indicated that 1 can serve as an excellent sensor for specific selective identification and quantification of Fe3+. A new two-fold interpenetrated pillared-layer MOF has been hydrothermally synthesized and characterized. The luminescence study indicates that it is a promising material for specific selective identification and quantification of Fe3+. [Display omitted] •Hydrothermal synthesis of a new metal-organic framework of Zn(II) with aromatic sulfonic ligand•Investigation by elemental analysis, FT-IR, TGA, PXRD, single-crystal X-ray diffraction•The structure features two-fold interpenetrated pillared-layer framework with (63)(69·8) topology.•The strong emission of 1 could be quenched efficiently by trace amounts of Fe3+ at room temperature.