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

Publisher: Elsevier Country of Publication: England NLM ID: 9602533 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3557 (Electronic) Linking ISSN: 13861425 NLM ISO Abbreviation: Spectrochim Acta A Mol Biomol Spectrosc Subsets: PubMed not MEDLINE; MEDLINE

Publication: : Amsterdam : Elsevier
Original Publication: [Kidlington, Oxford, U.K. ; Tarrytown, NY] : Pergamon, c1994-

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.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)

Keywords: Au nanoflowers; Localized surface plasmon resonance; Surface-enhanced Raman scattering

Date Created: 20241129 Latest Revision: 20241208

20241210

10.1016/j.saa.2024.125483

39612533