基于特定任务离子液体配体的水溶性铽（III）和铕（III）配合物及其在发光聚乙烯醇薄膜中的应用。

Water-soluble Tb(3+) and Eu(3+) complexes based on task-specific ionic liquid ligands and their application in luminescent poly(vinyl alcohol) films.

作者信息

Li Qing-Feng, Yue Dan, Ge Gen-Wu, Du Xiaodi, Gong Yanchuan, Wang Zhenling, Hao Jianhua

机构信息

The Key Laboratory of Rare Earth Functional Materials and Applications, Zhoukou Normal University, Zhoukou 466001, P. R. China.

出版信息

Dalton Trans. 2015 Oct 14;44(38):16810-7. doi: 10.1039/c5dt02555a. Epub 2015 Sep 4.

DOI:10.1039/c5dt02555a

PMID:26337142

Abstract

Novel water-soluble lanthanide complexes (Ln(IMI-DPA)3) have been synthesized using the task-specific ionic liquid consisting of a dipicolinic acid motif as the sensitizer of lanthanide luminescence. In Ln(IMI-DPA)3, Ln(3+) ions are in 9-fold coordination through six carboxylate oxygen atoms and three nitrogen atoms in pyridine units, and the water molecule is excluded from the coordination sphere of the lanthanides. It is found that Ln(IMI-DPA)3 possess bright luminescence, long luminescence lifetime in aqueous solution, high thermal stability and good water solubility. Furthermore, these complexes can be incorporated into water-soluble poly(vinyl alcohol) (PVA) matrixes to obtain highly luminescent, transparent and flexible PVA composite films. The emission colors of the films can be tuned from red, orange, yellow, light green, green to white light by regulating the concentration of the various luminescent components.

摘要

新型水溶性镧系配合物（Ln(IMI-DPA)3）已通过由二吡啶甲酸基序组成的特定任务离子液体合成，作为镧系发光的敏化剂。在Ln(IMI-DPA)3中，Ln(3+)离子通过六个羧酸根氧原子和吡啶单元中的三个氮原子进行九配位，水分子被排除在镧系元素的配位球之外。研究发现，Ln(IMI-DPA)3在水溶液中具有明亮的发光、长的发光寿命、高的热稳定性和良好的水溶性。此外，这些配合物可以掺入水溶性聚乙烯醇（PVA）基质中，以获得高发光、透明且柔性的PVA复合薄膜。通过调节各种发光组分的浓度，薄膜的发射颜色可以从红色、橙色、黄色、浅绿色、绿色调节到白光。