点击次数：

DOI码：10.1021/acsanm.4c00241

所属单位：化学与材料科学学院

发表刊物：ACS Appl. Nano Mater.

摘要：In this work, poly(sodium 4-styrenesulfonate) (PSS)-encapsulated acridinium sulfonamide (AS)-functionalized CoFe2O4 nanoparticles (CoFe2O4/AS/PSS NPs) were synthesized by a layer-by-layer assembly strategy. Compared with previously reported chemiluminescence (CL)-functionalized magnetic nanomaterials, CoFe2O4/AS/PSS NPs exhibited a high CL intensity with a much lower synthetic concentration of CL reagent and shorter synthetic time. The reason was found to be attributed to the high loading efficiency of AS molecules, the high CL efficiency of AS, and the catalytic effects of CoFe2O4 NPs and PSS on the CL reaction. Moreover, CoFe2O4/AS/PSS NPs showed good CL stability and an easy magnetic separation property. On this basis, a CL biosensor for cholesterol detection was constructed by modifying cholesterol oxidase on the surface of CoFe2O4/AS/PSS NPs using cysteamine-protected gold nanoparticles as a “bridge.” It demonstrated a wide linear range of 0.8–200 μM with a detection limit of 0.603 μM, both of which were better than those of most of the reported biosensors. Moreover, the developed CL biosensor required only one incubation step to detect cholesterol, which was simpler than most reported biosensors that require the mixing of nanomaterials with cholesterol oxidase and signal molecules to detect cholesterol. Finally, the detection of cholesterol in human serum samples was performed with good recoveries ranging from 90.5 to 109.6%, demonstrating that the developed CL biosensor is reliable and has great potential for clinical diagnosis. The CL magnetic analytical platform is also promising for application to other hydrogen peroxide-producing systems for the detection of related important biomolecules.

合写作者：Mohammad A. Haghighatbin,王依莎,王珏

第一作者：胡超

论文类型：期刊论文

通讯作者：舒江南,崔华

学科门类：理学

文献类型：J

卷号：7

期号：4

页面范围：4537–4545

是否译文：否

发表时间：2024-02-02

收录刊物：SCI

发布期刊链接：https://pubs.acs.org/doi/10.1021/acsanm.4c00241