The structure, morphology, and the metal-enhanced fluorescence of nano-Ag/ZnO core-shell structure

被引：8
|
作者：
Zhao, Yue [1 ]
Ding, Yanli [1 ]
Peng, Xiang [1 ]
Zhou, Mingtao [1 ]
Liang, Xiaoyan [1 ]
Min, Jiahua [1 ]
Wang, Linjun [1 ]
Shi, Weimin [1 ]
机构：
[1] Shanghai Univ, Dept Elect Informat Mat, Shanghai Leading Acad Disciplines, Shanghai 200072, Peoples R China
来源：
APPLIED NANOSCIENCE | 2015年 / 5卷 / 05期
基金：
上海市自然科学基金; 中国国家自然科学基金;
关键词：
Silver particles; Ag/ZnO core-shell structure; Metal-enhanced fluorescence; NANOPARTICLES; DNA;
D O I：
10.1007/s13204-014-0345-y
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nano-polycrystalline silver (Ag) particles with the diameter of 60 nm were synthesized by the reducing agent sodium citrate. An amorphous zinc oxide (ZnO) shell layer was then coated on the surface of silver particles using wet chemical method. The Ag/ZnO core-shell structure was characterized by scanning electron microscope, transmission electron microscopy, ultraviolet-visible spectroscopy and fluorescence (FL) measurement. The results showed that nano-Ag/ZnO core-shell particles with an average diameter of similar to 100 nm were prepared successfully, and the FL intensity of Rhodamine 6G (R6G) mixed with Ag/ZnO nanoparticle was 53 % greater than that of the same amount of R6G without any nanoparticles, which may be related to the effect of surface plasmon resonance.
引用
收藏
页码：521 / 525
页数：5
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