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摘要
To investigate the effect of the spacers of S-/O-bridged dipyridylamides on the structures of Co(II)/Zn(II) complexes, [Co(L-1)(chda)]1.5H(2)O (CP1), [Co(L-2)(chda)] (CP2), [Zn(L-1)(hip)]<bold>DMA</bold>2H(2)O (CP3), and [Zn(L-2)(hip)]2.8H(2)O (CP4) [L-1=N,N-bis(pyridine-3-yl)thiophene-2,5-dicarboxamide, H(2)chda=trans-1,4-cyclohexanedicarboxylic acid, L-2=N,N-bis(pyridine-3-yl)-4,4-oxybis(benzoic) dicarboxamide, H(2)hip=5-hydroxyisophthalic acid, DMA=N,N-dimethylacetamide], have been solvothermally synthesized. X-ray single-crystal diffraction shows that CP1 is a 2-D 3,5-connected network based on Co-L-1 linear chains and (Co-chda)(2) double chains. CP2 features a 1-D structure derived from 1-D wave-like (Co-chda)(2) double chains decorated by terminal L-2 ligands. CP3 and CP4 show wave-like (4,4) networks constructed by 1-D Zn-L-1 zigzag and Zn-hip zigzag (for CP3)/linear (for CP4) chains. The effect of the spacers of S-/O-bridged dipyridylamides on the structures of the title complexes was discussed. Electrochemical behaviors of CP1-CP2 and solid-state luminescent properties of CP3-CP4 were studied. The luminescence investigations show that CP3 and CP4 are recycled fluorescent probes for environmentally relevant Fe3+ ions. The photocatalytic properties for the degradation of methylene blue (MB) under ultraviolet light irradiation of CP3-CP4 and the recyclable materials after fluorescent sensing Fe3+ ions (named CP3@Fe3+ and CP4@Fe3+) have also been investigated. @@@ [GRAPHICS] @@@ .
