Slippery Au Nanosphere Monolayers with Analyte Enrichment and SERS Enhancement Functions

被引：53

作者：

Chen, Xueyan ^{[1
,2
]}

Cui, Aoran ^{[2
]}

He, Mengye ^{[1
]}

Yan, Mi ^{[2
]}

Zhang, Xiaochen ^{[1
]}

Ruan, Jian ^{[1
]}

Yang, Shikuan ^{[1
,2
,3
]}

机构：

[1] Zhejiang Univ Sch Med, Affiliated Hosp 1, Dept Med Oncol, Hangzhou 310003, Peoples R China

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China

[3] Zhejiang Univ, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Peoples R China

来源：

NANO LETTERS | 2023年 / 23卷 / 14期

基金：

中国国家自然科学基金;

关键词：

surface-enhanced Raman scattering; analyte enrichment; slippery surface; recyclability;

D O I：

10.1021/acs.nanolett.3c02238

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Slippery surfaces can enrich analytes from solutionsinto tinydots after solvent evaporation for surface-enhanced Raman scattering(SERS) detection. Here, we make the self-assembled Au nanosphere monolayersslippery, which can not only behave as SERS substrates but also enrichthe analytes during solvent evaporation. A thin silica shell was usedto wrap the Au nanosphere monolayer to allow the functionalizationof a slippery polydimethylsiloxane brush monolayer onto it. Theseslippery Au nanosphere monolayers could be easily cleaned and reused many times. When Au nanospheres were introduced into the analytesolution droplet on the slippery Au nanosphere monolayer, a 3D Aunanoparticle/analyte aggregate was formed after solvent evaporation.Both the Au nanoparticle aggregate and the underneath slippery Aunanosphere monolayer could contribute to SERS enhancement. We endowthe self-assembled Au nanosphere monolayer SERS substrates with ananalyte enrichment function, greatly strengthening their SERS enhancement.

引用

页码：6736 / 6743

页数：8

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