{"title":"Patterned Au@Ag Nanoparticles for Surface-Enhanced Raman Scattering","authors":"Zhenkai Huang, Yutong Chen, Liguo Xu, Jianping Peng* and Peijiang Liu*, ","doi":"10.1021/acsanm.4c0506310.1021/acsanm.4c05063","DOIUrl":null,"url":null,"abstract":"<p >Herein, a surface-enhanced Raman scattering (SERS) substrate with good sensitivity and reproducibility is fabricated by using a “one-step” process. Patterned Au nanostructures were generated employing copolymer brushes as templates, subsequently undergoing the reduction of AgNO<sub>3</sub>. Impressively, the entire experimental procedure eschews intricate synthesis steps or the necessity for stabilizer additives. The resultant Ag shell layer evenly encapsulates the Au core, yielding densely packed Ag-coated Au (Au@Ag) nanoparticles. These patterned Au@Ag nanoparticle assemblies exhibited remarkable Raman performance, achieving a minimum concentration of detection of 100 pM and an average enhancement factor of 8.8 × 10<sup>9</sup> when using 4-mercaptobenzoic acid served as the probe molecule. Experimental outcomes and analyses pertaining to thiram, methylene blue, and rhodamine 6G (R6G) confirm the substrate’s pronounced Raman effect and its broad range of potential applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.4c05063","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Herein, a surface-enhanced Raman scattering (SERS) substrate with good sensitivity and reproducibility is fabricated by using a “one-step” process. Patterned Au nanostructures were generated employing copolymer brushes as templates, subsequently undergoing the reduction of AgNO3. Impressively, the entire experimental procedure eschews intricate synthesis steps or the necessity for stabilizer additives. The resultant Ag shell layer evenly encapsulates the Au core, yielding densely packed Ag-coated Au (Au@Ag) nanoparticles. These patterned Au@Ag nanoparticle assemblies exhibited remarkable Raman performance, achieving a minimum concentration of detection of 100 pM and an average enhancement factor of 8.8 × 109 when using 4-mercaptobenzoic acid served as the probe molecule. Experimental outcomes and analyses pertaining to thiram, methylene blue, and rhodamine 6G (R6G) confirm the substrate’s pronounced Raman effect and its broad range of potential applications.
期刊介绍：
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.
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