含Eu和Tb聚合物的制备及荧光性质

PREPARATION AND FLUORESCENCE PROPERTIES OF Eu-AND Tb-CONTAINING POLYMERS

从稀土氧化物出发制备了含稀土的单体或添加剂,通过与其他有机单体共聚或加入共聚体系,制备了固体含稀土聚合物。对所制备的单体或添加剂进行了元素分析及 IR,TG 和 DTA 测试。对含稀土聚合物进行了荧光性质的研究。

The europium and terbium methacrylate Eu(MA)_3,Tb(MA)_3,and octanoate Eu(OA)_3,Tb(OA)_3 were prepared.Either Eu(MA)_3 or Tb(MA)_3with three double bonds(C=C)was used as a cross-linking reagent and octa-noic acid salts were used as additives.An amount of rare earth salts was disso-lved into a small amount of methacrylic acid,and then copolymerized with me-thyl methacrylate using AIBN (0.3 wt-%) as an initiator.Two types of thepolymers,one containing Eu(MA)_3 or Tb(MA)_3 and the other with Eu(OA)_3or Tb(OA)_3,were synthesized and characterized.The fluorescence spectrcscopy of these pelymers under ultraviolet-visiblelight excitation has been investigated.The fluorescence excitation and emissionspectra of these polymers show the characteristic spectra of the free Eu or Tb.The fluorescence intensity of rare earth metal ions increases linearly with theincreasing of rare earth metal content.