CIESC Journal ›› 2012, Vol. 63 ›› Issue (7): 2298-2302.DOI: 10.3969/j.issn.0438-1157.2012.07.045

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High stability of silver substrate based on Ostwald ripening self-assembly process

WEN Huanfei, TANG Jun, CHAI Penglan, LIU Jun   

  • Received:2011-11-22 Revised:2012-03-05 Online:2012-07-05 Published:2012-07-05

基于Ostwald ripening自组装工艺的银纳米颗粒活性衬底的高稳定性

温焕飞,唐军,柴鹏兰,刘俊   

  1. 中北大学仪器科学与动态测试教育部重点实验室和电子测试技术重点实验室
  • 通讯作者: 唐军

Abstract: By means of Ostwald ripening self-assembly process, Ag nanoparticles substrates of various densities and sizes were fabricated.In the investigation of surface enhanced Raman scattering (SERS)and surface enhancement fluorescence (SEF)using crystal violet (CV)as a probe molecule, it was found that Raman and luminescence intensity varied in parallel with the Ag nanoparticles size.With increasing time of self-assembly process, the changes of intensity trended to be stabilized.The results indicated that SERS and SEF could be optimized by Ostwald ripening self-assembly.The results obtained could provide reference when developing long-term stability and cost-effective bio-chemical sensors based on SERS and SEF.

Key words: surface enhanced Raman scattering;surface enhancement fluorescence, Ostwald ripening, Ag nanoparticles, self-assembly, stability

摘要: 利用Ostwald ripening自组装工艺对拉曼增强衬底进行处理,得到粒径和密度不同的银纳米颗粒拉曼增强衬底。用龙胆紫生物大分子作为探针,对其表面增强拉曼散射(SERS)和表面增强荧光(SEF)进行研究发现,拉曼和荧光光谱强度存在着相似的变化趋势,且随着自组装工艺时间的递增,强度的变化趋于稳定。研究结果表明:Ostwald ripening自组装工艺可以优化SERS和SEF增强效果及其稳定性,故其可为研制具有长期稳定性、低成本的基于SERS和SEF效应生物化学传感器件提供研究基础。

关键词: 表面增强拉曼散射, 表面增强荧光, Ostwald ripening, 银纳米颗粒, 自组装, 稳定性

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