采用大分子反应法,将萘甲酸(NA)键合在聚砜(PSF)侧链,制得萘甲酸功能化的聚砜PSFNA.以PSFNA为大分子配基,以邻菲罗啉(Phen)为小分子配体,与Eu(Ⅲ)离子配位,分别制备了二元高分子稀土发光配合物PSF-(NA)3-Eu(Ⅲ)与三元高分子-稀土发光配合物PSF-(NA)3-Eu(Ⅲ)-(Phen)1.采用红外光谱(FT-IR)和紫外吸收光谱(UV)对配合物进行了表征,对配合物的化学结构与发光性能的关系进行了深入研究,并应用Antenna效应理论,从微观机理上分析了实验结果.同时也制备了配合物的固体薄膜,考察了固体薄膜的荧光发射性能.研究结果表明,键合在PSFNA侧链的配基NA能有效地敏化Eu(Ⅲ)离子的荧光发射,大分子配基PSFNA与Eu(Ⅲ)离子所形成的二元或三元高分子-稀土配合物,均能发射出很强的Eu(Ⅲ)离子的特征荧光.但是,键合在PSFNA侧链的配基NA对Tb(Ⅲ)离子的荧光发射无敏化作用,还会发生由中心离子激发态到配基三线态的逆向能量转移.第二配体的协同配位效应使三元配合物的荧光发射强度高于二元配合物.
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