基于共价有机框架的乙胆检测SERS传感器混合金纳米颗粒作为纳米酶
Cuicui Fu1, Yalan Li1, Xiangyuan Lei1
1Chongqing Key Laboratory for New Chemical Materials of Shale Gas, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China.
Analytical chemistry
|October 28, 2024
概括
一种结合金纳米颗粒和共价有机框架的新型纳米酶表现出类似于减少酶的活性,以有效减少4-尼托芬醇. 该系统还作为一个敏感的表面增强拉曼散射 (SERS) 基质,用于检测乙胆.
科学领域:
- 纳米材料科学 科学 纳米材料科学
- 分析化学 分析化学
- 生物化学 生物化学
背景情况:
- 共价有机框架 (COF) 为材料设计提供可调节的特性.
- 金纳米粒子 (Au NPs) 以其催化和SERS特性而闻名.
- 开发高效的纳米酶和敏感的检测平台对于生物测试至关重要.
研究的目的:
- 通过将Au NPs集成到COF上来开发一种具有减少酶类活性的新型纳米酶.
- 为了利用这种纳米混合体作为表面增强的拉曼散射 (SERS) 基板进行敏感检测.
- 建立一种新的检测乙胆 (Ach) 的方法,使用4-尼托醇 (4-NPH) 作为SERS标记物.
主要方法:
- 在现场合成金纳米粒子 (Au NPs) 在共价有机框架 (COF) 上.
- 利用COF混合的Au NPs的降解酶类活性来催化4-尼托醇的降解.
- 使用纳米混合物作为表面增强的拉曼散射 (SERS) 基质用于乙胆检测.
主要成果:
- 该纳米酶有效催化了4-尼托醇的减少.
- 由于COF吸附和Au NP热点,纳米混合体表现出极好的SERS性能.
- 作为一种抑制剂,Ach被检测到具有高灵敏度 (线性范围:1.0 pM10 nM,检测极限:~0.3 pM).
- 在血清样本中实现了高恢复率 (97.2%104.5%).
结论:
- 开发的纳米酶-COF-Au NP混合体表现出强大的减少酶类活性.
- 这种纳米混合体作为一种高度敏感的SERS基质,用于化学和生物检测.
- 这种纳米酶-SERS系统为先进的化学和生物测试应用提供了巨大的潜力.
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