膦酰基离子液体铕配合物的合成、结构与荧光性质

doi:10.3724/SP.J.1095.2014.40080

摘要/Abstract

摘要： 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。

关键词: 离子液体, 铕配合物, 光致发光, 膦酰基

Abstract: Two ionic liquids with phosphoryl group, 1-butyl-3-(3-diphenylphosphoryl)propyl imidazolium hexafluorophophate([BIMC3P(O)Ph2]PF6, IL-1) and (3-diphenylphosphoryl)-triethylamonium hexafluorophophate([TEAC3P(O)Ph2]PF6, IL-2), were synthesized and characterized by NMR and IR. Their Eu3+complexes, Eu(IL-1)3(NO3)3 and Eu(IL-2)3(NO3)3 were also synthesized. Thermal analysis shows that both ionic liquids have excellent thermal stability than their Eu3+ complexes. Upon coordination, the IR absorption of P=O group in ionic liquid complexes moves to a lower wavenumber and the intensities of UV absorption spectra of their complexes are also increased. These results clearly demonstrate that ionic liquids with phosphoryl groups are coordinated to Eu3+ ions. The fluorescence study indicates that there is a sharp and strong emission of characteristic red light of Eu3+ ion. The results show that these Eu3+ complexes are promising photoluminescent materials.

Key words: ionic liquid, europium complex, photoluminescence, phosphoryl group

中图分类号:

O614.3

黄飞隆, 石睿恺, 朱涛峰, 李准, 王邃, 臧漫路, 梁洪泽. 膦酰基离子液体铕配合物的合成、结构与荧光性质[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.40080.

HUANG Feilong, SHI Ruikai, ZHU Taofeng, LI Zhun, WANG Sui, ZANG Manlu, LIANG Hongze*. Synthesis, Structure and Luminescence Properties of Europium Complexes Coordinated by Ionic Liquids with Phosphoryl Group[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.40080.

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