Dual functional three-dimensional LnMOFs for luminescence sensing of nitrobenzene and Fe3+ ions. (5th September 2017)

• Record Type: Journal Article
• Authors: Guo, Xiaohai; Li, Yongsheng; Peng, Qingyuan; Duan, Zhiming; Li, Mingxing; Shao, Min; He, Xiang
• Is Part Of: Polyhedron. Volume 133(2017)
• Page Start: 238
• Page End: 244
• Publication Date: 2017-09-05
• Subjects: Lanthanide MOFs -- Sensor -- Crystal structure -- Luminescence -- Ion detection; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2017.04.033
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Two novel lanthanide MOFs, {{Me2 NH2 }[Ln III (L)]·3H2 O·DMF} n (Ln = Tb, Eu), have been successfully synthesized as a bifunctional luminescent probe for detecting nitrobenzene (NB) and Fe 3+ ions. Abstract: Two lanthanide MOFs, namely {{Me2 NH2 }[Tb III (L)]·3H2 O·DMF} n (1 ) and {{Me2 NH2 }[Eu III (L)]·3H2 O·DMF} n (2 ), based on the flexible ligand 5-(bis(4-carboxybenzyl)amino)isophthalic acid (H4 L) have been synthesized under solvothermal conditions, where DMF = N, N -dimethylformamide. The two compounds exhibit a 3D structure with rectangle channels encapsulating [Me2 NH2 ] + cations. The microporous structure as well as the confinement of cations inside the MOFs pores allows1 and2 to act as dual-functional luminescent materials to detect nitroaromatics and metal ions. The experiments show that the luminescence of sample1 in DMF solution was quenched when the nitrobenzene (NB) content reached 2.3 × 10 −2 mol/L and concentration of Fe 3+ reached 5 × 10 −4 mol/L.