title: A Terbium Metal-Organic Framework for Highly Selective and Sensitive Luminescence Sensing of Hg2+Ions in Aqueous Solution.
abstract: A series of isomorphic lanthanide metal-organic frameworks (MOFs) Ln(TATAB)⋅(DMF)4(H2O)(MeOH)0.5(LnTATAB, Ln=Eu, Tb, Sm, Dy, Gd; H3TATAB=4,4',4''-s-triazine-1,3,5-triyltri-p-aminobenzoic acid) have been solvothermally synthesized and structurally characterized. Among these MOFs, TbTATAB exhibits good water stability and a high fluorescence quantum yield. Because mercury ions (Hg2+) have a high affinity to nitrogen atoms, and the space between multiple nitrogen atoms from triazine and imino groups is suitable for interacting with Hg2+ions, TbTATAB shows highly selective and sensitive detection of Hg2+in aqueous solution with a detection limit of 4.4 nm. Furthermore, it was successfully applied to detect Hg2+ions in natural water samples.
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Tifeng
authors.initials: T
authors.lastname: Xia
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Song
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Gege
authors.initials: G
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Yuanjing
authors.initials: Y
authors.lastname: Cui
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Zhiyu
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
authors.forename: Guodong
authors.initials: G
authors.lastname: Qian
keywords: fluorescence; luminescence sensing; mercury; metal-organic frameworks; terbium