A stable Eu (III) coordination polymer for sensitive and selective sensing of Fe3+/Cr2O72− ions in aqueous medium. (1st January 2021)

• Record Type: Journal Article
• Authors: Guo, Ruihong; Gao, Lingling; Zhou, Wendi; Zhang, Yujuan; Hu, Tuoping
• Is Part Of: Polyhedron. Volume 193(2021)
• Publication Date: 2021-01-01
• Subjects: Semirigid polycarboxylic acid ligand -- Lanthanide coordination polymer -- Fe3+ cation -- Cr2O72− anion -- Sensing; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2020.114846
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: A Pictogram: A 2D lanthanide coordination polymer [Eu(BCPB)(H2 O)2 ]n (1 ) solvothermally synthesized displays a red light emission, and has highly sensitive detection of Fe 3+ /Cr2 O7 2− ions in aqueous solution by a fluorescence quenching effect. Highlights: A 2D lanthanide coordination polymer (1 ) was solvothermally synthesized and characterized. 1 displays a red light emission and has highly sensitive detection of Fe 3+ /Cr2 O7 2− ions in aqueous solution. The quenching mechanisms of 1 Fe 3+ and Cr2 O7 2− for 1 were investigated in detail. Abstract: A lanthanide coordination polymer [Eu(BCPB)(H2 O)2 ]n (1 ) was synthesized based on a semirigid tripodal polycarboxylic acid ligand (H3 BCPB = 3, 5-bis(2-carboxy-phenoxy)-benzoic acid). Single crystal X-ray diffraction analyses showed that compound 1 exhibits 2D layer structures with [Eu6 (COO)22 (H2 O)12 ] SBU. Furthermore, fluorescence tests demonstrated that 1 has highly sensitive detection for Fe 3+ /Cr2 O7 2− ions in aqueous solution by a fluorescence quenching effect. Meanwhile, the quenching mechanisms of 1 for Fe 3+ and Cr2 O7 2− were also investigated in detail.