Aligned diphenylalanine nanotube-silver nanoparticle templates for high-sensitivity surface-enhanced Raman scattering

被引：27

作者：

Almohammed, Sawsan ^{[1
,2
]}

Fedele, Stefano ^{[1
]}

Rodriguez, Brian J. ^{[1
,2
]}

Rice, James H. ^{[1
]}

机构：

[1] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

[2] Univ Coll Dublin, Conway Inst Biomol & Biomed Res, Dublin 4, Ireland

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 2017年 / 48卷 / 12期

基金：

爱尔兰科学基金会;

关键词：

diphenylalanine; nanoparticles; peptide nanotubes; self-assembly; surface-enhanced Raman scattering;

D O I：

10.1002/jrs.5254

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Self-assembly offers potential routes for large-scale, rapid, and cost-effective surface-enhanced Raman scattering (SERS) substrate designs. Here, a highly sensitive SERS template is reported, which utilizes aligned diphenylalanine nanotubes to form a dense packing arrangement of plasmon-active silver nanoparticles. The template is stable under high laser illumination with a power density of 6.25MW/cm(2) in comparison to only silver nanoparticles and enables picomolar and femtomolar probe molecule concentrations to be probed, indicative of single-molecule SERS detection.

引用

页码：1799 / 1807

页数：9

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