萘甲醛缩甘氨酸席夫碱配基结构的键合型高分子-稀土配合物发光材料的制备及其发光性能研究

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

摘要:

为了制备高发光性能的键合型高分子-稀土配合物发光材料,并探索其结构与发光性能的关系,经三步大分子反应,制备了具有萘甲醛缩甘氨酸席夫碱配基结构的功能化聚砜(PSF-NGly),采用红外、氢谱、紫外及茚三酮显色法表征了各步制备的产物。使制得的PSF-NGly与稀土Eu(Ⅲ)离子发生配位反应,制得高分子-稀土配合物PSF-(NGly)₃-Eu(Ⅲ),采用荧光光谱测定了PSF-(NGly)₃-Eu(Ⅲ)的发光性能。结果表明,在聚砜侧链成功键合萘甲醛缩甘氨酸席夫碱基团,大分子配体PSF-NGly对Eu(Ⅲ)离子产生“Antenna”效应,配合物PSF-(NGly)₃-Eu(Ⅲ)发光性能优异。

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.