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Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations

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用于生物感知的动力性停止的SERS-活性聚合物.

Natalie S Potter¹, Kamil Sokołowski¹, Renata Lang Sala¹

¹University of Cambridge, Melville Laboratory for Polymer Synthesis, Yusuf Hamied Department of Chemistry, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND.

Chemistry (Weinheim an der Bergstrasse, Germany)

|April 17, 2025

概括

此摘要是机器生成的。

新的黄金纳米粒子 (AuNP) 组合与黄[7]uril (CB[7]) 和硫化聚乙烯甘醇 (PEG-SH) 显示出增强的稳定性和敏感性,用于生物流体中的非侵入性生物传感.

关键词:

生物传感器动力逮捕聚合物拆卸自组装表面增强拉曼光谱 (SERS)

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科学领域:

纳米技术纳米技术
生物医学工程生物医学工程
分析化学分析化学

背景情况:

生物传感器对于医疗保健的生物流体中低分析剂度的长期非侵入性监测是必要的.
生物流体的复杂性挑战了生物传感器的传感和稳定性.
表面增强拉曼光谱 (SERS) 在复杂介质中提供灵敏,实时,非破坏性的检测.

研究的目的:

开发稳定,可调节的SERS活性金纳米粒子 (AuNP) 组件用于生物流体分析.
为了克服AuNP:CB[7]聚合物的降水问题.
为了证明在生物流体中低度检测分析物.

主要方法:

使用硫化聚乙烯糖醇 (PEG-SH) 制造动力捕获的转移稳定的AuNP:CB[7]:PEG聚合物.
通过修改 PEG 链长度和接种密度来调整 SERS 活动.
在各种生物流体中检测到拉曼记者和生物分析剂.

主要成果:

与AuNP:CB[7]聚合物相比,AuNP:CB[7]:PEG聚合物表现出持续的SERS活性和改善的稳定性.
聚合物显示基于PEG修改的调节灵敏度.
证明了生物流体中分析物的低度检测.

结论:

动力捕获的转移稳定的AuNP:CB[7]:PEG聚合物为基于SERS的生物传感提供了一个稳定和可调的平台.
这些聚合物显示出非侵入性体内长期监测和定制生物传感应用的潜力.