A series of transition metal-organic frameworks: crystal structures, luminescence properties, and sensitizing for luminescent Ln(III) ions in aqueous solution

作者：Qu, Xiang-Long; Zheng, Xiao-Li; Li, Xia^*

来源：RSC Advances, 2016, 6(73): 69007-69015.

DOI：10.1039/c6ra08419b

• COORDINATION POLYMERS
• LIGANDS SYNTHESES
• DICARBOXYLATE
• EXPLOSIVES
• COMPLEXES
• NETWORKS
• EXCHANGE
• SENSORS
• ACID
• MOFS

A series of coordination polymers, namely, [Cd(DPDC)(BPP)center dot H2O]center dot H2O (1), Cd-4(O-OBA)(4)(BPP)(2) (2), [Zn-2(DPDC)(2)(BTB)(H2O)(2)]center dot H2O (3), [Zn(O-OBA)(BPP)]center dot 0.5H(2)O (4), [Zn(O-OBA)(BPP)]center dot H2O (5), Cu(DPDC)(BTB) (6) and [Co(O-OBA)(BTB) H2O]center dot 0.5H(2)O (7) (DPDC = 2,20-diphenyldicarboxylate, O-OBA = 2,2'-oxybis(benzoate), BPP = 1,3-di(4-pyridyl) propane, and BTB = 1,4-bis(1,2,4-triazol-1-yl) butane) were hydrothermally synthesized and structurally characterized. 1 forms a quadrilateral grid like network with {CdO4N3} polyhedra. 2 exhibits a 2D architecture containing four types of {Cd1O7}, {Cd3O7}, {Cd(2)O4N(2)} and {Cd4O4N2} polyhedra. 3 features a ladder like double chain that consists of Zn-1-DPDC-and Zn-2-DPDC-chains with {Zn1O4N} and {Zn2O4N} polyhedra. 4 possesses a helical 2D framework consisting of Zn-2-O-OBA- and Zn-1-BPP-Zn-2-BPP-helical chains involving {Zn1O2N2} and {Zn2O2N2} tetrahedra. 5 consists of Zn-BPP-Zn-O-OBA-double helical chains with {ZnO2N2} tetrahedra. 6 has a (4, 4) 2D framework formed by Cu-DPDC- and Cu-BTB-chains involving {CuO4N2} octahedra. 7 consists of a 1D zigzag chain where the {CoO4N2} octahedra are bridged by BTB ligands, while the O-OBA behaves as a terminal ligand. Complex 4 shows solvent-dependent luminescence and can be used to detect nitrobenzene via the quenching effect. Moreover, complex 4 can notably sensitize luminescent lanthanide ions in aqueous solution to emit their characteristic emissions.

• 出版日期2016
• 单位首都师范大学