We report a detailed investigation of the processes of the surface segregation in correlation with the wetting properties of perfluoroalkyl end-functionalized linear aromatic oligoesters. We have compared properties of films containing different fluorine concentration prepared by the spin-coating technique and by melting of polymer grain onto the supported substrate. We demonstrate that both methods can be used for the preparation of highly hydrophobic and oleophobic surfaces. Obtained layers possess high value of n-hexadecane advancing contact angle and low contact angle hysteresis. Moreover, oligoester films with the surface energies as low as 11 mJ/m 2 were prepared with 10.7 wt % of fluorine in the system and possessed higher oleophobicity than Teflon AF. We showed that the advantages of use of melting of polymer grain are higher surface enrichment and closer packing of perfluorinated species and, as a result, a higher hydro/oleophobicity, especially at lower F contents (<6 wt %). This is a first report about an influence of preparation method onto the surface properties of perfluorinated polymers.

Using a polyaryletherketone bearing carboxyl groups (PEK) as macromolecular ligand, Tb3+and Ce3+as central coordination ions, 1,10-phenanthroline (Phen) as the second ligand, a kind of novel terbium-cerium coordination polymer (PEK-Tb3+0.5Ce3+0.5-Phen) was prepared. The structure of PEK-Tb3+0.5Ce3+0.5-Phen was investigated by ICP, FTIR and XRD. The results showed that Tb3+and Ce3+ions coordinated to both the polymer ligand PEK and the second ligand Phen, and rare earth ions homogeneously distributed in the polymer matrix. The fluorescence measurement indicated that PEK-Tb3+0.5Ce3+0.5-Phen can exhibit the characteristic emission of Tb3+. Furthermore, the emission intensity of PEK-Tb3+0.5Ce3+0.5-Phen at 546 nm, corresponding to the green color, was higher than that of PEK-Tb3+-Phen.