【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 concentrat
【机 构】
：
Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province,Changchun U
论文部分内容阅读
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.
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