Perfluorodecanethiol-Functionalized Silver Nanoparticles on Polyester Films as High-Performance Surface-Enhanced Raman Spectroscopy Substrates
The insufficient capabilities of current surface-enhanced Raman scattering (SERS) substrates in enriching dilute analytes from complex media severely restrict detection sensitivity, hampering practical applications. To meet this demand, in this study, a novel super hydrophobic membrane that can be directly prepared on a large scale based on the silver nanoparticles (AgNPs) functioning with perfluorodecanethiol (PFDT) is fabricated and evaluated as an SERS substrate. Firstly, polyester (PET) films modified with sodium chloride were proven to be capable of loading AgNPs, and the sizes of AgNPs were investigated. In addition, the PFDT concentration and reaction time for functionalizing the surface of AgNPs have been optimized. The relationship between the hydrophobic properties of the film and its SERS performance was then studied. The PET@Ag-PFDT film demonstrates two orders of magnitude superior SERS performance than the unmodified PET@Ag substrate, with a detection limit of folic acid approaching 5 × 10<sup>-10</sup> M.
Authors
- Rui Lü (ORCID: https://orcid.org/0000-0002-9666-480X)
- Lujie Li
- Lingling Wang (ORCID: https://orcid.org/0000-0003-4067-1995)
- Lan Zhang (ORCID: https://orcid.org/0000-0002-6905-2189)
- Tingting Zhang (ORCID: https://orcid.org/0000-0003-1703-4082)
- Chang Liu (ORCID: https://orcid.org/0000-0002-7867-6807)
- Weihua Li (ORCID: https://orcid.org/0009-0004-1986-5714)
- Tao Xu (ORCID: https://orcid.org/0000-0001-5613-5287)
- Wei Li (ORCID: https://orcid.org/0009-0008-8046-6703)
- Shiying Wu
Institutions
- Anhui Jianzhu University (CN)
- Anhui University (CN)
- Nanjing University of Science and Technology (CN)
- Guangdong Academy of Sciences (CN)
- Institute of Microbiology (CN)
Publication Details
- Journal
- Applied Spectroscopy
- Published
- 2024-10-14
- DOI
- https://doi.org/10.1177/00037028241288576
- Primary Topic
- Gold and Silver Nanoparticles Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities