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Reference type: Journal
Authors: Lu XL, Wei FD, Xu GH, Wu YZ, Yang J, Hu Q
Article Title: Surface Molecular Imprinting on Silica-Coated CdTe Quantum Dots for Selective and Sensitive Fluorescence Detection of p-aminophenol in Water.
Publication date: 2017
Journal: Journal of Fluorescence
Volume: 27
Issue: (1)
Page numbers: 181-189.
DOI: 10.1007/s10895-016-1944-7

Abstract: In this paper, a selective and sensitive sensor for the determination of p-aminophenol (PAP) was developed by grafting molecularly imprinted polymers (MIPs) on the surface of silica-coated CdTe quantum dots (CdTe@SiO2@MIPs). The obtained CdTe@SiO2@MIPs were characterized by X-ray powder diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and fluorescence spectroscopy. The fluorescence intensity of CdTe@SiO2@MIPs was more strongly quenched by PAP than that of the structural analogues of PAP. Under the optimal conditions, the fluorescence intensity of the CdTe@SiO2@MIPs decreased sensitively with the increase of PAP concentration in the range of 0.05-50 μM. The limit of detection was 0.02 μM (3σ/Ksv). The sensor was successfully used to determine PAP in tap and lake water samples, and the average recoveries of PAP at various spiking levels ranged from 97.33 % to 103.3 % with relative standard deviations below 20 %
Template and target information: p-aminophenol, PAP
Author keywords: Silica-coated CdTe quantum dots, surface molecular imprinting, p-aminophenol, Fluorimetry

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