Enhanced fluorescence properties of terbium complex/poly-L-lactic acid superfine fibers sensitized by the LSPR effect of silver nanoparticles

被引:3
作者
Wen, Shipeng [1 ]
Zhang, Guiming [1 ]
Zhang, Rong [1 ]
Zhang, Liqun [1 ]
Liu, Li [1 ,2 ]
机构
[1] Beijing Univ Chem Technol, Beijing Engn Res Ctr Adv Elastomers, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源
RSC ADVANCES | 2017年 / 7卷 / 32期
基金
中国国家自然科学基金;
关键词
SURFACE-PLASMON RESONANCE; LIGHT-EMITTING DEVICES; ELECTROSPINNING PREPARATION; COMPOSITE NANOFIBERS; LUMINESCENCE; PARTICLES; GLASSES; FILMS; GOLD;
D O I
10.1039/c7ra02401k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this research, Ag-NPs/Tb-complex/PLLA composite fibers with diameters of around 250 nm were successfully obtained by the electrospinning and characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and fluorescence spectra. The influence of localized surface plasmon resonance (LSPR) of silver nanoparticles (Ag-NPs) on the fluorescence of Tb(acac)(3)phen/poly-L-lactic acid (Tb-complex, acac = acetylacetone; phen = phenanthroline, PLLA = poly-L-lactic acid) fibers was mainly investigated. It is found that Tb-complex dispersed in the fibers in the form of nanoclusters. The local field surrounding of Tb3+ ions was affected by the neighboring Ag-NPs. As a result of the LSPR effect of Ag-NPs, the fluorescence intensity, quantum efficiency of Tb-complex in the composite fibers with the Ag/Tb ratio of 4 : 1, were simultaneously improved compared with the composite fibers without Ag-NPs.
引用
收藏
页码:19808 / 19814
页数:7
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