3 years ago

Crystal structure and luminescent properties of novel coordination polymers constructed with bifurandicarboxylic acid

Crystal structure and luminescent properties of novel coordination polymers constructed with bifurandicarboxylic acid
Mingrui He, Baolin Li, Jianfeng Li, Jiawei Huang, Xianyu Huang, Daoliang Chen
Four novel coordination polymers (CPs) assembled with [2,2′-bifuran]-5,5′-dicarboxylic acid (H2L) and metal ions ZnII, CdII or CoII have been successfully synthesized. Their molecular structures have been determined to be Zn(L)(H2O)2 (1), [Zn(L)(DMF)]2 (2), [Cd(L)(EtOH)(DMF)2]2 (3) and Co(L)(H2O)4·(H2O)2 (4) by crystallographic analysis. It is found that (2) exhibits a two-dimensional infinite framework, whereas the others exhibit a one-dimensional framework. Both (2) and (3) exhibit ligand-based emission which is blue-shifted compared with the emission from the H2L ligand. Time-resolved spectroscopic measurement reveals that the complexes exhibit a similar lifetime with that of the ligand, which confirms that the emission of the complexes originates from the ligand.Four novel coordination polymers (CPs) assembled with [2,2′-bifuran]-5,5′-dicarboxylic acid (H2L) and metal ions ZnII, CdII or CoII have been successfully synthesized and characterized. It was found that both the metal ion and the crystal structure play important roles for the luminescent properties of CPs.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1107/S2052520617003870

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