Perfluorodecanethiol-Functionalized Silver Nanoparticles on Polyester Films as High-Performance Surface-Enhanced Raman Spectroscopy Substrates.

IF 2.2 3区化学 Q2 INSTRUMENTS & INSTRUMENTATION

Applied Spectroscopy Pub Date : 2024-10-14 DOI:10.1177/00037028241288576

Wei Li, Tingting Zhang, Shiying Wu, Lan Zhang, Lujie Li, Tao Xu, Lingling Wang, Chang Liu, Weihua Li, Rui Lu

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Abstract

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^-10 M.

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聚酯薄膜上的全氟癸硫醇官能化银纳米粒子作为高性能表面增强拉曼光谱基底。

目前的表面增强拉曼散射（SERS）基底在富集复杂介质中的稀释分析物方面能力不足，严重限制了检测灵敏度，阻碍了实际应用。为了满足这一需求，本研究基于与全氟癸硫醇（PFDT）作用的银纳米粒子（AgNPs），制备了一种可直接大规模制备的新型超疏水膜，并将其作为 SERS 基底进行了评估。首先，用氯化钠修饰的聚酯（PET）薄膜被证明能够负载 AgNPs，并对 AgNPs 的尺寸进行了研究。此外，还优化了 AgNPs 表面功能化的 PFDT 浓度和反应时间。然后研究了薄膜的疏水特性与其 SERS 性能之间的关系。PET@Ag-PFDT 薄膜的 SERS 性能比未改性的 PET@Ag 基底高出两个数量级，叶酸的检测限接近 5 × 10-10 M。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Spectroscopy 工程技术-光谱学

CiteScore

6.60

自引率

5.70%

发文量

139

审稿时长

3.5 months

期刊介绍： Applied Spectroscopy is one of the world''s leading spectroscopy journals, publishing high-quality peer-reviewed articles, both fundamental and applied, covering all aspects of spectroscopy. Established in 1951, the journal is owned by the Society for Applied Spectroscopy and is published monthly. The journal is dedicated to fulfilling the mission of the Society to “…advance and disseminate knowledge and information concerning the art and science of spectroscopy and other allied sciences.”