Aggregation of Ag Nanoparticles Coated with Silica and Its SERS Effect

LI Xiao-kun; ZHANG You-lin; KONG Xiang-gui

doi:10.3788/fgxb20143507.0853

您当前的位置：

首页 >

文章列表页 >

Aggregation of Ag Nanoparticles Coated with Silica and Its SERS Effect

更新时间：2020-08-12

- Aggregation of Ag Nanoparticles Coated with Silica and Its SERS Effect
- Chinese Journal of Luminescence Vol. 35, Issue 7, Pages: 853-857(2014)
- 作者机构：
  
  发光学及应用国家重点实验室中国科学院长春光学精密机械与物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143507.0853
  CLC： O657
- Received：27 March 2014，
  
  Revised：24 April 2014，
  
  Published Online：09 May 2014，
  
  Published：03 July 2014
- 稿件说明：
移动端阅览
李晓坤, 张友林, 孔祥贵. Ag纳米粒子聚集体的SiO<sub>2</sub>包覆及其SERS效应[J]. 发光学报, 2014,35(7): 853-857

LI Xiao-kun, ZHANG You-lin, KONG Xiang-gui. Aggregation of Ag Nanoparticles Coated with Silica and Its SERS Effect[J]. Chinese Journal of Luminescence, 2014,35(7): 853-857
李晓坤, 张友林, 孔祥贵. Ag纳米粒子聚集体的SiO<sub>2</sub>包覆及其SERS效应[J]. 发光学报, 2014,35(7): 853-857 DOI： 10.3788/fgxb20143507.0853.

LI Xiao-kun, ZHANG You-lin, KONG Xiang-gui. Aggregation of Ag Nanoparticles Coated with Silica and Its SERS Effect[J]. Chinese Journal of Luminescence, 2014,35(7): 853-857 DOI： 10.3788/fgxb20143507.0853.

摘要

为实现表面增强拉曼散射（SERS）信号的快速检测分析，报道了一种简单的利用SiO

包覆对巯基苯甲酸（4MBA）修饰的Ag纳米粒子形成核壳结构纳米颗粒SERS标记物的方法。通过调控溶液中硝酸钠的浓度来控制4MBA-Ag的聚集程度，获得不同的热点效应，然后利用SiO

包覆实现对聚集体的固定。扫描电镜结果证实此种方法非常有效。该体系中SERS的信号强度依赖于4MBA-Ag的聚集程度。该研究结果有助于实现聚集体SERS标记物在生物成像、检测和传感等方面的应用。

Abstract

In order to realize the unltrasensitive analysis by using the surface enhanced Raman scattering (SERS)

we presented a simple and reproducible approach to encapsulate the aggregation of 4-mercaptobenzoic acid-modified Ag nanoparticles with silica. In order to obtain "hot spot"

the level of aggregation could be controlled by varying the concentration of NaNO

and then the aggregation was coated with silica

which was demonstrated with SEM. In conclusion

the SERS signal seriously depended on the level of aggregation. Due to the strong enhancement effect

this technique has the potential in biomedical field.

关键词

Keywords

references

Schlucker S. SERS microscopy: Nanoparticle probes and biomedical applications [J]. Chem. Phys. Chem., 2009, 10(9): 1344-1354.

Doering W E, Piotti M E, Natan M J, et al. SERS as a foundation for nanoscale [J]. Adv. Mater., 2007, 19(20):3100-3108.

Qian X M, Nie S M. Single-molecule and single-nanoparticle SERS: From fundamental mechanisms to biomedical applications [J]. Chem. Soc. Rev., 2008, 37(5):912-920.

Tripp R A, Dluhy R A, Zhao Y P. Novel nanostructures for SERS biosensing [J]. Nano Today, 2008, 3(3):31-37.

Nie S M, Emoty S R. Probing single molecule and single nanoparticles by surface enhanced Raman scattering [J]. Science, 1997, 275(21):1102-1106.

Bosnick K A, Jiang J, Brus L E. Fluctuations and local symmetry in single molecule rhodamine 6G Raman scattering on silver nanocrystal aggregates [J]. J. Phys, Chem. B, 2002, 106(33):8096-8099.

Kneipp K, Wang Y, Kneipp H, et al. Single molecule detection using surface enhanced Raman scattering [J]. Phys. Rev. Lett., 1997, 78(9):1667-1670.

Wang Y, Yan B, Chen L. SERS tags: Novel optical nanoprobes for bioanalysis [J]. Chem. Rev., 2013, 113:1391-1428.

Ahonen P, Laaksonen T, Nykanen A, et al. Formation of stable Ag nanoparticle aggregates induced by dithiol cross-linking [J]. J. Phys. Chem. B, 2006, 110:12954-12958.

Hu J, Zhao B, Xu W, et al. Simple method for preparing controllably aggregated silver particle films used as surface enhanced Raman scattering active substrates [J]. Langmuir, 2002, 18:6839-6844.

Zhang Y L, Kong X G, Xue B, et al. Effect of aggregation of Ag nanoparticles suspended in aqueous solution on surface enhanced Raman scattering [J]. Chin. J. Lumin.(发光学报), 2014, 35(2):263-267 (in Chinese).

Views

152

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰