A target analyte induced fluorescence band shift of piperazine modified carbon quantum dots: a specific visual detection method for oxytetracycline. Issue 82 (27th September 2019)

• Record Type: Journal Article
• Authors: Yang, Lei; Zhao, Haitong; Liu, Ning; Wang, Wei
• Is Part Of: Chemical communications. Volume 55:Issue 82(2019)
• Page Start: 12364
• Page End: 12367
• Publication Date: 2019-09-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc05406e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A visual and specific assay of oxytetracycline is realized by inducing a fluorescence band shift of piperazine modified carbon quantum dots. 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.