Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2012-10-28

Journal: RSC ADVANCES

Included Journals: Scopus、EI、SCIE

Volume: 2

Issue: 26

Page Number: 10085-10090

ISSN: 2046-2069

Abstract: Novel rare earth-coordinated polymers were prepared using carboxyl-containing polyaryletherketone (PEK) as the macromolecular ligand and 8-hydroxyquinoline (HQ) as the co-ligand to coordinate with erbium (Er3+), neodymium (Nd3+) and ytterbium (Yb3+), respectively. The FTIR, elemental analysis, inductively coupled plasma, and UV-vis results confirm that the rare earth ions have been attached to the polymer backbone via a coordination bond. The complexes can emit the characteristic near-infrared fluorescence of the corresponding rare earth ions. Moreover, it is found that the synergistic effect of PEK and HQ can significantly enhance the emission intensities. In particular, for PEK-Er3+-HQ, the full width at half maximum (FWHM) of the I-4(13/2)-> I-4(15/2) transition is up to 78 nm. The combination of strong fluorescence emission in the near-infrared range, high glass transition temperature and wide gain bandwidth provides promising potential for optical amplification applications.