研究目的
To propose a facile and effective method for preparing a molecularly imprinted fluorescence sensor with carbon quantum dots for the selective recognition and rapid detection of tetracycline in complex environments.
研究成果
The molecularly imprinted fluorescence sensor based on carbon quantum dots was successfully synthesized and demonstrated good selectivity and sensitivity for tetracycline detection. The method offers a promising approach for the specific recognition and determination of tetracycline in environmental samples.
研究不足
The study does not discuss the long-term stability of the sensor under various environmental conditions or its performance in detecting tetracycline in samples with complex matrices beyond water.
1：Experimental Design and Method Selection:
The study used a precipitation polymerization method to prepare molecularly imprinted fluorescence sensors based on carbon quantum dots (CQDs) modified with vinyl groups by acrylic acid.
2：Sample Selection and Data Sources:
CQDs were synthesized via a hydrothermal method using citric acid and polyethyleneimine.
3：List of Experimental Equipment and Materials:
Transmission electron microscope (TEM) and Fourier transform infrared spectra (FT-IR) were used for characterization. Fluorescence measurements were recorded using a fluorescence spectrophotometer.
4：Experimental Procedures and Operational Workflow:
The CQDs were modified with acrylic acid, then polymerized with tetracycline, acrylamide, ethylene glycol dimethacrylate, and azobisisobutyronitrile to form the imprinted polymers. The template molecules were then eluted.
5：Data Analysis Methods:
The fluorescence quenching rate was analyzed using the Stern–Volmer equation to determine the detection limit and linear range.
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