Eu3+ ions grafted polyacrylonitrile nanofibers possessing enhanced fluorescence performance by introducing benzoic acid as assistant ligand

• 作者: Ping Wu Qianli Ma Wensheng Yu Jinxian Wang Guixia Liu Xiangting Dong
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2022,（3）
• 所属期刊栏目: SPECTROSCOPY, LUMINESCENCE AND PHOSPHORS
• 页码范围: 421-427
• 页数: 7页
• 语种: 英文

摘要

Eu3+ ions were grafted onto the surface of electrospun polyacrylonitrile (PAN) nanofibers through co-ordination effect between C≡N groups on PAN nanofibers and Eu3+ ions,and benzoic acid (BA) was introduced as an assistant ligand.The impacts of concentrations of Eu3+ ions and BA,and reaction time on the properties of final products were investigated.The results reveal that Eu3+ ions can be successfully grafted onto PAN nanofibers,but the fluorescence intensity of the obtained PAN@Eu3+ nanofibers is very weak,After BA is introduced as the assistant ligand,the fluorescence intensity of the obtained PAN@(Eu3+/BA) nanofibers is greatly stronger than that of PAN@Eu3+ nanofibers,and meanwhile,con-centration quenching effect of Eu3+ ions can be effectively restrained.Furthermore,the superior struc-ture of PAN@(Eu3+/BA) nanofibers not only brings the effective utilization of precious elemental europium,but also guarantees high mechanical strength.