期刊
ACS OMEGA
卷 7, 期 1, 页码 1368-1379出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c05985
关键词
-
资金
- Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu, India
A fluorometric sensor was designed based on nitrogen-passivated carbon dots infused with a molecularly imprinted polymer for selective and sensitive detection of trace amounts of 2,4,6-trinitrophenol. The sensor showed an enhanced fluorescent response with a fine linear range and a low detection limit, making it suitable for analyzing TNP in water samples.
In this article, we designed a fluorometric sensor based on nitrogen-passivated carbon dots infused with a molecularly imprinted polymer (N-CDs@MIP) via a reverse microemulsion technique using 3-aminopropyltriethoxysilane as a functional monomer, tetraethoxysilane as a cross-linker, and 2,4,6-trinitrophenol (TNP) as a template. The synthesized probe was used for selective and sensitive detection of trace amounts of TNP. The infusion of N-CDs (QY-21.6 percent) with a molecularly imprinted polymer can increase the fluorescent sensor sensitivity to detect TNP. Removal of template molecules leads to the formation of a molecularly imprinted layer, and N-CDs@MIP fluorescence response was quenched by TNP. The developed fluorescence probe shows a fine linear range from 0.5 to 2.5 nM with a detection limit of 0.15 nM. The synthesized fluorescent probe was used to analyze TNP in regular tap and lake water samples.
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