Issue 82, 2019

A target analyte induced fluorescence band shift of piperazine modified carbon quantum dots: a specific visual detection method for oxytetracycline

Abstract

Through the protection/deprotection of one amine group and the amidation reaction, piperazine was used to modify carbon quantum dots (CQDs) and successfully served as a medium to combine oxytetracyclines (OTC) in solution by hydrogen bonding and electrostatic interactions. Fluorescence resonance energy transfer (FRET) probably occurred between piperazine modified CQDs (P-CQDs) and combined OTC, which resulted in the red-shift of the fluorescence band. Besides superior specificity for examining, a good linear relationship between the maximum emission wavelength of P-CQDs and concentrations of OTC (0 to 10 μM) can be obtained, which provides a rapid and convenient visual fluorescence detection method of OTC.

Graphical abstract: A target analyte induced fluorescence band shift of piperazine modified carbon quantum dots: a specific visual detection method for oxytetracycline

Supplementary files

Article information

Article type
Communication
Submitted
14 Jul 2019
Accepted
19 Sep 2019
First published
20 Sep 2019

Chem. Commun., 2019,55, 12364-12367

A target analyte induced fluorescence band shift of piperazine modified carbon quantum dots: a specific visual detection method for oxytetracycline

L. Yang, H. Zhao, N. Liu and W. Wang, Chem. Commun., 2019, 55, 12364 DOI: 10.1039/C9CC05406E

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