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Date of Publication:2010-01-01

Journal:高分子学报

Issue:5

Page Number:567-573

ISSN No.:1000-3304

Abstract:The carboxyl-containing polyaryletherketones (PEK-1, PEK-2 and PEK-3) with excellent thermal properties and good film- formations prepared in our group were used as macromolecular ligands. Using 1,10-phenanthroline (Phen) as co-ligand and samarium (Sm(3+)) as the central ion, a series of novel samarium coordination polymers (PEK-Sm(3+)-Phen) were prepared. The FTIR and UV-Vis absorption spectra suggested that both the oxygen atoms of carboxyl groups of PEK and the nitrogen atoms of Phen were coordinated with Sm(3+) ions. The XRD curves indicated Sm(3+) ions could distribute homogeneously within the polymer matrix due to the formation of coordination bonds between Stu' and the carboxyl groups of PEK. The fluorescence spectra showed that all the coordination polymers obtained could exhibit the intense characteristic emission of Sm(3+) ions under UV excitation. Moreover, their emission intensities were much higher than that of the corresponding small molecular complex (Sm(3+) -Phen) due to the introduction of PEK with the rigid polymer chain, which could result in the stable coordination structure and the low coordination symmetry around Sm(3+) in in the PEK-Sm(3+)-Phen system. In addition, among the three coordination polymers obtained, PEK-1-Sm(3+)-Phen showed the highest fluorescence intensity. The emission intensity of PEK-1-Sm(3+)-Phen could reach a maximum value at the Sm(3+) content of 15.73 wt%.

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