Preparation and Exploration of Luminescence Property of Polymer-Rare Earth Complexes with Naphthalaldehyde Glycine Schiff Base Ligand

Abstract:

In order to prepare high-performance bonded polymer-rare earth complex luminescent mate-rials and explore the relationship between their structure and luminescent properties, functionalized polysulfone (PSF-NGly) containing naphthalene formaldehyde condensation glycine Schiff base ligand structure was prepared through three steps of macromolecular reactions. The products of each step were characterized by infrared, proton nuclear magnetic resonance, ultraviolet and ninhydrin colorimetric methods. The obtained PSF-NGly was coordinated with rare earth Eu(Ⅲ) ions to form the polymer-rare earth complex PSF-(NGly)₃-Eu(Ⅲ). The luminescent properties of PSF-(NGly)₃-Eu(Ⅲ) were determined by fluorescence spectroscopy. The results showed that the naphthalene formaldehyde condensation glycine Schiff base group was successfully bonded to the polysulfone side chain, and the macromolecular ligand PSF-NGly produced an "Antenna" effect on the Eu(Ⅲ) ion. The complex PSF-(NGly)₃-Eu(Ⅲ) had excellent luminescent properties.