Synthesis and Surface-Enhanced Raman Scattering Properties of AU@AG Core-Shell Nanoellipsoids

2018 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS) Pub Date : 2018-07-01 DOI:10.1109/MARSS.2018.8481233

Yanting Liu, Yajing Shen

{"title":"Synthesis and Surface-Enhanced Raman Scattering Properties of AU@AG Core-Shell Nanoellipsoids","authors":"Yanting Liu, Yajing Shen","doi":"10.1109/MARSS.2018.8481233","DOIUrl":null,"url":null,"abstract":"This Seed-mediated growth prepared Au nanorods (Au NRs) are primarily secondary grown into Au nanoellipsoids (Au NEs) and then use as seeds for the epitaxial growth of silver shells on the gold core to form Au@Ag core-shell nanoellipsoids (Au@Ag core-shell NEs) in the presence of surfactants. The characterization of the morphology, optical properties and crystallography of Au NRs, Au NEs and Au@Ag core-shell NEs have been studied. Then we analyze the overall growth mechanism of the nanoparticles during the synthesis process. Moreover, by adjusting the amount of AgNO3adding in the epitaxial processes, different size Au@Ag core-shell NEs can also be obtained. Additionally, the surface-enhanced Raman scattering (SERS) enhancing properties of Au@Ag core-shell NEs have also been evaluated with 4-mercaptobenzoic acid (4-MBA) labelled molecule as Raman detector. Interesting, such core-shell NCs also exhibit efficient SERS intensity. The results obtained here suggest that Au@Ag core-shell NEs might serve as nanoprobe for SERS-based analytical and biosensing applications.","PeriodicalId":118389,"journal":{"name":"2018 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MARSS.2018.8481233","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

This Seed-mediated growth prepared Au nanorods (Au NRs) are primarily secondary grown into Au nanoellipsoids (Au NEs) and then use as seeds for the epitaxial growth of silver shells on the gold core to form Au@Ag core-shell nanoellipsoids (Au@Ag core-shell NEs) in the presence of surfactants. The characterization of the morphology, optical properties and crystallography of Au NRs, Au NEs and Au@Ag core-shell NEs have been studied. Then we analyze the overall growth mechanism of the nanoparticles during the synthesis process. Moreover, by adjusting the amount of AgNO3adding in the epitaxial processes, different size Au@Ag core-shell NEs can also be obtained. Additionally, the surface-enhanced Raman scattering (SERS) enhancing properties of Au@Ag core-shell NEs have also been evaluated with 4-mercaptobenzoic acid (4-MBA) labelled molecule as Raman detector. Interesting, such core-shell NCs also exhibit efficient SERS intensity. The results obtained here suggest that Au@Ag core-shell NEs might serve as nanoprobe for SERS-based analytical and biosensing applications.

查看原文本刊更多论文

AU@AG核壳纳米椭球体的合成及其表面增强拉曼散射性能

这种种子介导生长制备的金纳米棒(Au NRs)首先生长为金纳米椭球体(Au NEs)，然后在表面活性剂的存在下，作为种子在金核上外延生长银壳，形成Au@Ag核-壳纳米椭球体(Au@Ag核-壳NEs)。研究了Au NRs、Au NEs和Au@Ag核壳NEs的形貌、光学性质和晶体学特征。然后分析了纳米颗粒在合成过程中的整体生长机理。此外，通过调整外延工艺中agno3的添加量，还可以得到不同尺寸的Au@Ag核壳网元。此外，还利用4-巯基苯甲酸(4-MBA)标记分子作为拉曼检测器，对Au@Ag核壳NEs的表面增强拉曼散射(SERS)性能进行了评价。有趣的是，这种核-壳纳米结构也表现出高效的SERS强度。研究结果表明，Au@Ag核壳NEs可以作为纳米探针用于基于sers的分析和生物传感应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2018 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)

自引率

0.00%

发文量