Synthesis, Structure and Luminescence Properties of Europium Complexes Coordinated by Ionic Liquids with Phosphoryl Group

doi:10.3724/SP.J.1095.2014.40080

Chinese Journal of Applied Chemistry

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Synthesis, Structure and Luminescence Properties of Europium Complexes Coordinated by Ionic Liquids with Phosphoryl Group

HUANG Feilong, SHI Ruikai, ZHU Taofeng, LI Zhun, WANG Sui, ZANG Manlu, LIANG Hongze^*

(Faculty of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China)

Received:2014-03-17 Revised:2014-05-22 Published:2014-11-08 Online:2014-11-08
Contact: HongZe Liang

Abstract

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

CLC Number:

O614.3

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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Synthesis, Structure and Luminescence Properties of Europium Complexes Coordinated by Ionic Liquids with Phosphoryl Group

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