title: A multi-responsive luminescent sensor based on a super-stable sandwich-type terbium(iii)-organic framework.
abstract: A super-stable multifunctional terbium(iii)-organic framework, namely {[Tb(TATAB) (H2O)2]·NMP·H2O}n(Tb-MOF, H3TATAB = 4,4',4''-s-triazine-1,3,5-triyltri-m-aminobenzoic acid, NMP = N-methyl-2-pyrrolidone) was synthesized. Tb-MOF exhibits a 2D sql structure with binuclear [Tb2(COO)4(H2O)4]2+units as 4-connected nodes, and free water and NMP molecules are inserted between 2D layers through hydrogen-bonding interactions, forming a sandwich-type architecture. Observably, such a framework remains intact in a remarkable variety of environments such as common solvents and aqueous solutions with metal cations and inorganic anions, as well as with a pH ranging from 1 to 13. In particular, Tb-MOF can not only detect small organic molecules, metal cations and inorganic anions with high sensitivity and high selectivity, but also can accurately detect explosive 2-nitrophenol, 3-nitrophenol, 4-nitrophenol and 2,4,6-trinitrophenol in water. Its luminescence quenching response to Fe3+and Cr2O72-ions can be explained in terms of the competitive absorption mechanism. In addition, the luminescence intensity of Tb-MOF is strongly correlated with the pH value in a pH range from 1 to 13. Thus, this material can be potentially used as a multi-responsive luminescent sensor.
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com.
authors.forename: Guo-Xuan
authors.initials: GX
authors.lastname: Wen
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com and College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang 471934, P. R. China. mazhuxp@126.com.
authors.forename: Min-Le
authors.initials: ML
authors.lastname: Han
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com.
authors.forename: Xue-Qian
authors.initials: XQ
authors.lastname: Wu
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com.
authors.forename: Ya-Pan
authors.initials: YP
authors.lastname: Wu
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com.
authors.forename: Wen-Wen
authors.initials: WW
authors.lastname: Dong
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.affiliation: College of Materials & Chemical Engineering, Collaborative Innovation Centre for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China. lidongsheng1@126.com.
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang 471934, P. R. China. mazhuxp@126.com.
authors.forename: Lu-Fang
authors.initials: LF
authors.lastname: Ma