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A Terbium Metal–Organic Framework for Highly Selective and Sensitive Luminescence Sensing of Hg 2+ Ions in Aqueous Solution
Author(s) -
Xia Tifeng,
Song Tao,
Zhang Gege,
Cui Yuanjing,
Yang Yu,
Wang Zhiyu,
Qian Guodong
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201603531
Subject(s) - terbium , aqueous solution , chemistry , lanthanide , metal ions in aqueous solution , metal organic framework , luminescence , inorganic chemistry , detection limit , ion , fluorescence , triazine , quantum yield , metal , materials science , organic chemistry , physics , optoelectronics , adsorption , chromatography , quantum mechanics
A series of isomorphic lanthanide metal–organic frameworks (MOFs) Ln(TATAB)⋅(DMF) 4 (H 2 O)(MeOH) 0.5 (LnTATAB, Ln=Eu, Tb, Sm, Dy, Gd; H 3 TATAB=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 (Hg 2+ ) have a high affinity to nitrogen atoms, and the space between multiple nitrogen atoms from triazine and imino groups is suitable for interacting with Hg 2+ ions, TbTATAB shows highly selective and sensitive detection of Hg 2+ in aqueous solution with a detection limit of 4.4 n m . Furthermore, it was successfully applied to detect Hg 2+ ions in natural water samples.