Au nanoflower/Au island hybrid substrate as high-performance SERS platforms

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2024-11-23 DOI:10.1016/j.saa.2024.125483

Xiaohu Mi , Xin Zhao , Yuting Luo , Yongfeng Li , Yuwei Wu , Simeng Xue , Xiaohang Yang , Zhenglong Zhang , Haifa Qiao

{"title":"Au nanoflower/Au island hybrid substrate as high-performance SERS platforms","authors":"Xiaohu Mi , Xin Zhao , Yuting Luo , Yongfeng Li , Yuwei Wu , Simeng Xue , Xiaohang Yang , Zhenglong Zhang , Haifa Qiao","doi":"10.1016/j.saa.2024.125483","DOIUrl":null,"url":null,"abstract":"<div><div>Surface-enhanced Raman scattering (SERS) offers significant enhancements to weak Raman signals, which has been widely used for the detection of ultra-low concentrations of molecules. Obtaining repeatable SERS substrates with high density “hot spots” is one of the main challenges for quantitative analysis using SERS. Herein, a SERS substrate based on Au nanoflower/nanoisland (NF/NI) hybrid substrate is constructed. The Au NF/NI substrate can generate “hot spots” by the nanogap between nanotip of Au NF and Au NI, which has been proved to have high stability and sensitivity by experiments, the limit of detection is determined to be down to 10<sup>−11</sup> M for Rhodamine 6G (R6G) molecules. In addition, the Au NF/NI hybrid substrate as template can be further extended to prepare bimetallic SERS substrates. This synthetic pathway will not only contribute to the design of new type of SERS substrate, but also promote understanding of the growth mechanisms of multicomponent nanostructure.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"328 ","pages":"Article 125483"},"PeriodicalIF":4.3000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1386142524016494","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"SPECTROSCOPY","Score":null,"Total":0}

引用次数: 0

Abstract

Surface-enhanced Raman scattering (SERS) offers significant enhancements to weak Raman signals, which has been widely used for the detection of ultra-low concentrations of molecules. Obtaining repeatable SERS substrates with high density “hot spots” is one of the main challenges for quantitative analysis using SERS. Herein, a SERS substrate based on Au nanoflower/nanoisland (NF/NI) hybrid substrate is constructed. The Au NF/NI substrate can generate “hot spots” by the nanogap between nanotip of Au NF and Au NI, which has been proved to have high stability and sensitivity by experiments, the limit of detection is determined to be down to 10⁻¹¹ M for Rhodamine 6G (R6G) molecules. In addition, the Au NF/NI hybrid substrate as template can be further extended to prepare bimetallic SERS substrates. This synthetic pathway will not only contribute to the design of new type of SERS substrate, but also promote understanding of the growth mechanisms of multicomponent nanostructure.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.