合成了两种膦酰基离子液体,1-丁基3-(3-二苯基膦酰基)丙基咪唑六氟磷酸盐([BIMC3P(O)Ph2] PF6)(IL-1)和(3-二苯基膦酰基)-丙基三乙胺六氟磷酸盐([TEAC3P(O) Ph2] PF6)(IL-2),通过核磁共振和红外光谱确认了它们的结构,并合成了两种离子液体的稀土铕配合物Eu(IL-1)3(NO3)3和Eu(IL-2)3(NO3)3,对其进行了热稳定性和光谱性质的表征.热重分析表明,离子液体的热稳定性均高于其稀土配合物,相比之下,离子液体IL-1和Eu(IL-1)3(NO3)3具有更好的热稳定性.从红外光谱中可以看出,形成配合物后,两种离子液体中的P==O吸收峰均向低波数方向移动,同时两种配合物的紫外吸收强度均大于各自游离的离子液体,说明Eu3+和离子液体中的磷酰基发生了配位.稀土铕配合物Eu(IL-1)3(NO3)3和Eu(IL-2)3(NO3)3的荧光光谱均表现出Eu3+的特征红光,峰形尖锐,单色性好,可作为潜在的红色发光材料.
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