期刊
BIOSENSORS & BIOELECTRONICS
卷 74, 期 -, 页码 313-317出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2015.04.096
关键词
Triple-dimensional; Sensing chip; Quantum dots; Graphene; Lab-on-a-nanomaterial
类别
资金
- National Science Foundation for Distinguished Young Scholars of China [31225021]
A triple-dimensional sensing chip is developed based on simultaneous utilization of fluorescence (FL), electrochemical (ECL) and mass-sensitivity (MS) properties of a novel nanocomposites. The sensing nanomaterial is composed of CdSe/ZnS quantum dots (QDs) and graphene through a one-pot roomtemperature reverse microemulsion polymerization. Here, full integration of QDs and graphene on one chip provides triple-dimensional sensing signals. It enables quick and accurate discrimination of eight analytes in a lab-on-a-nanomaterial approach and notably improves the overall sensor performance. Unknown samples randomly taken from the training set at concentrations of 0.71 mu M are successfully classified by principal component analysis (PCA) with accuracies of 92.5%, compared with the high performance liquid chromatography (HPLC) method. We further apply it to discriminate eight antioxidants from real oil samples, and explore the mechanism. (C) 2015 Elsevier B.V. All rights reserved.
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