当前位置: X-MOL 学术Plasmonics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Modification and SERS Optimization of Triangular Ag Nanoplates
Plasmonics ( IF 3 ) Pub Date : 2020-07-13 , DOI: 10.1007/s11468-020-01232-5
Runxiang Xu , Luting Yan , Yanyun Zhu , Lan Yin , Xiaodong Song

Triangular Ag nanoplates have been synthesized via the seed-mediated method, which has good morphology and can be reproduced stably. The wavelength of local surface plasmon resonance (LSPR) can be easily controlled in the range of 500–900 nm. When triangular Ag nanoplates were applied to surface-enhanced Raman scattering (SERS) based on suspension aggregates and solid aggregates, the detection limit of rhodamine 6G (R6G) were greatly increased to 3.125 × 10−7 M and 10−11 M, respectively, and there was an excellent linear relationship between the intensity of Raman peak and the concentration of R6G. In addition, when the excitation light was tuned to the LSPR wavelength, the surface plasmon resonance will be excited to the maximum extent, and the enhanced electromagnetic field will maximize the Raman scattering. Furthermore, some progress has been made in the optimization of SERS by compounding graphene hydrogels in solid aggregates and adding mercapto polyethylene glycol in suspension aggregates.



中文翻译:

三角形Ag纳米板的修饰和SERS优化

已经通过种子介导的方法合成了三角形的Ag纳米板,其形态学好并且可以稳定地复制。局部表面等离子体激元共振(LSPR)的波长可以轻松控制在500–900 nm的范围内。当基于悬浮聚集体和固体聚集体将三角形Ag纳米板应用于表面增强拉曼散射(SERS)时,若丹明6G(R6G)的检测极限大大提高到3.125×10 -7  M和10 -11 分别为M和Raman峰强度与R6G浓度之间存在极好的线性关系。另外,当将激发光调谐到LSPR波长时,表面等离子体共振将被激发到最大程度,增强的电磁场将使拉曼散射最大化。此外,通过在固体聚集体中混合石墨烯水凝胶并在悬浮聚集体中添加巯基聚乙二醇,在优化SERS方面取得了一些进展。

更新日期:2020-07-13
down
wechat
bug