| Literature DB >> 34914009 |
Yongxin Song1, Wenquan Liu1, Xin Mu1, Xiahua Zhong1, Anni Cui1, Yu Sun1, John R Crockett2, Ying Bao2, Guiye Shan3, Yanwei Chen1.
Abstract
Carbon dots/Prussian blue nanoparticles (CDs/PBNPs) with fluorescence (FL) performance and peroxidase-like activity are synthesized by a simple two-step method. The FL of CDs/PBNPs can be effectively quenched by Fe3+. Fe3+ can accelerate the peroxidase-like activity of CDs/PBNPs. More excitingly, the peroxidase-like activity of CDs/PBNPs could be further enhanced due to the influence of the photothermal effect. Based on the FL property and enhanced peroxidase-like activity, a cascade strategy is proposed for detection of Fe3+ and free cholesterol. CD/PBNPs act as FL probe for detection of Fe3+. The enhanced peroxidase-like activity of CDs/PBNPs can also be used as colorimetric probe for the detection of free cholesterol. The detection ranges of Fe3+ and free cholesterol are 4-128 μM and 2-39 μM, and the corresponding limit of detections are 2.0 μM and 1.63 μM, respectively. The proposed strategy has been verified by the feasibility determination of Fe3+ and free cholesterol, suggesting its potential in the prediction of disease.Entities:
Keywords: CDs/PBNPs; Cholesterol; Fe3+ determination; Fluorescence probe; Peroxidase-like activity; Photothermal effect
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Year: 2021 PMID： 34914009 DOI： 10.1007/s00604-021-05129-w
Source DB: PubMed Journal: Mikrochim Acta ISSN： 0026-3672 Impact factor: 5.833