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Prof. Yaqian Lan and Assoc. Prof. Shunli Li’s collaborative work has been published in the journal of INORGANIC CHEMISTRY

A Water-Stable Metal-Organic Framework for Highly Sensitive and Selective Sensing of Fe3+ Ion
Hou, BL (Hou, Bing-Lei)[ 1 ] ; Tian, D (Tian, Dan)[ 1 ] ; Liu, J (Liu, Jiang)[ 1 ] ; Dong, LZ (Dong, Long-Zhang)[ 1 ] ; Li, SL (Li, Shun-Li)[ 1 ]* ; Li, DS (Li, Dong-Sheng)[ 2 ] ; Lan, YQ (Lan, Ya-Qian)[ 1 ]*

[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China
[ 2 ] China Three Gorges Univ, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China

INORGANIC CHEMISTRY, Oct.2016, 55(20), 10580-10586

A new metal - organic framework [Zn-5(hfipbb)(4)(trz)(2)(H2O)(2)] (NNU-1) [H(2)hfipbb = 4,4'-(hexafluoroisopropylidene)bis(benzoic acid), Htrz = 1H-1,2,3-triazole] was assembled by hydrothermal synthesis. Single-crystal X-ray diffraction analysis reveals that NNU-1 displays a twofold interpenetrating three-dimensional (3D) framework with a {4(24).6(4)}-bcu topology. Interestingly, the 3D framework contains a two-dimensional (2D) layered structure that consists of alternating left- and right-handed double helical chains. On the basis of the hydrophobic -CF3 groups from H(2)hfipbb ligand, NNU-1 possesses excellent stability in water. It is worth noting that NNU-1 not only shows a highly selective fluorescence quenching effect to Fe3+ ion in aqueous solution but also resists the interference of other metals including Fe2+ ion. Accordingly, NNU-1 probably functions fluorescence sensor for detecting Fe3+ ion with high sensitivity and selectivity.