高等学校化学学报

高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (3): 563.doi: 10.7503/cjcu20120602

• 分析化学 • 上一篇    下一篇

山莓状Au-树脂微球的制备及SERS性能

王晶, 孙春生, 刘雪锋, 王铖   

  1. 江南大学教育部食品胶体与生物技术重点实验室, 化学与材料工程学院, 无锡 214122
  • 收稿日期:2012-06-25 出版日期:2013-03-10 发布日期:2013-02-18
  • 通讯作者: 刘雪锋,男,博士,教授,主要从事应用化学研究.E-mail:xfliu@jiangnan.edu.cn E-mail:xfliu@jiangnan.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:21071065)和教育部留学回国人员科研启动基金(批准号:教外司留[2011]1139)资助.

Fabrication of Raspberry-like Au-Resin Microspheres and the SERS Performance

WANG Jing, SUN Chun-Sheng, LIU Xue-Feng, WANG Cheng   

  1. The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
  • Received:2012-06-25 Online:2013-03-10 Published:2013-02-18

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被引次数

18

摘要：

采用抗坏血酸在室温下液相还原AuCl4--阴离子交换树脂微球, 同时实现Au微柱的形成及在树脂表面的阵列型组装, 低成本高通量地得到山莓状Au-树脂微球; 以苯硫酚为探针考察了山莓状Au-树脂微球用作表面增强拉曼散射(SERS)活性基底的性能, 结果表明, Au-树脂微球具有良好的Raman增强效应(增强因子EF达到108～109量级), 且有很高的重现性和稳定性, Raman信号强度和EF的相对标准偏差(RSD)为(35±5)%.

关键词: 山莓状Au-树脂微球, Au微柱阵列, 表面增强拉曼散射基底

Abstract:

The high throughout and cost-effective fabrication strategy of raspberry-like Au-Resin microspheres, with the anion exchange resin microsphere as the inner core and the monolayer array of micro-sized Au posts as the outer shell, was achieved by the reduction reaction of AuCl4--Resin by ascorbic acid in aqueous solutions. The formation of Au micro-sized posts and the corresponding array were simultaneously obtained in a single step. The performance of surface enhanced Raman scattering(SERS) for the raspberry-like Au-Resin microspheres was explored using benzenethiol as the probe. The SERS enhanced factor(EF) is in the range of 108-109 orders of magnitude, the relative standard deviation(RSD) of both Raman intensity and EF is about (35±5)%, which indicates that the raspberry-like Au-Resin microspheres can be used as the excellent SERS active substrates with high reproducibility and stability.

Key words: Raspberry-like Au-Resin microsphere, Arrays of Au micro-sized post, SERS active substrate

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