期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 329, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.129101
关键词
Ru(bpy)(3)(2+); Ferrocene carboxylic acid; n-butyl diethanolamine; Procalcitonin; Quench; Electrochemiluminescence
资金
- National Key Scientific Instrument and Equipment Development Project of China [21627809]
- National Natural Science Foundation of China [21777056]
- Special Foundation for Taishan Scholar Professorship of Shandong Province
- Jinan Scientific Research Leader Workshop Project [2018GXRC024, 2018GXRC021]
- Innovation Team Project of Colleges and Universities in Jinan [2019GXRC027]
The immunosensor described utilizes specific materials and mechanisms to successfully detect PCT with good sensitivity and stability. This strategy may offer significant guidance in the fundamental and clinical analysis of PCT.
Herein, a quenching electrochemiluminescence (ECL) immunosensor was applied to detect procalcitonin (PCT) based on ferrocene carboxylic acid (Fca) quenching the ECL of Ru(bpy)(3)(2+). Co-reactant n-butyl diethanolamine and Ru(bpy)(3)(2+) co-doped in silica nanoparticles which grafted on g-C3N4 surface (RuSiNPs-g-C3N4) as luminophores. g-C3N4 could immobilize large amounts of RuSiNPs due to large specific surface area, besides, its electrical conductivity also contributed to enhance the ECL intensity. N-butyl diethanolamine serving as alternative co-reactant promoted ECL efficiency. Zeolitic Zn2+-imidazolate cross-linked frame-work (ZIF-8) were served as the supporter to immobilize more amounts of Fca, which could remarkably decrease the ECL signal. The quenching mechanism mainly because that the oxidation species of Fca could further react with the excited states of Ru(bpy)(3)(2+)*. Under optimal experiment conditions, the proposed immunosensor presented a linear response range for detecting PCT from 5 pg mL(-1) to 100 ng mL(-1) with a detection limit of 0.85 pg mL(-1) (S/N = 3). Furthermore, the proposed ECL immunosensor presented favorable specificity, good stability as well as excellent reproducibility, this strategy can offer a guiding significance in fundamental and clinical analysis of PCT.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据