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 (Sm3+) as the central ion

a series of novel samarium coordination polymers (PEK-Sm3+-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 Sm3+ ions.The XRD curves indicated Sm3+ ions could distribute homogeneously within the polymer matrix due to the formation of coordination bonds between Sm3+ and the carboxyl groups of PEK.The fluorescence spectra showed that all the coordination polymers obtained could exhibit the intense characteristic emission of Sm3+ ions under UV excitation.Moreover

their emission intensities were much higher than that of the corresponding small molecular complex (Sm3+-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 Sm3+ ion in the PEK-Sm3+-Phen system.In addition

among the three coordination polymers obtained

PEK-1-Sm3+Phen showed the highest fluorescence intensity.The emission intensity of PEK-1-Sm3+-Phen could reach a maximum value at the Sm3+ content of 15.73 wt%.