Publication Date:
2017-08-04
Description:
Four novel coordination polymers (CPs) assembled with [2,2′-bifuran]-5,5′-dicarboxylic acid (H 2 L ) and metal ions Zn II , Cd II or Co II have been successfully synthesized. Their molecular structures have been determined to be Zn( L )(H 2 O) 2 (1), [Zn( L )(DMF)] 2 (2), [Cd( L )(EtOH)(DMF) 2 ] 2 (3) and Co( L )(H 2 O) 4 ·(H 2 O) 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 H 2 L 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 (H 2 L ) and metal ions Zn II , Cd II or Co II 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.
Topics:
Chemistry and Pharmacology
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Geosciences
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Physics
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