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Facile Synthesis of Fluorescence Carbon Quantum Dots and Their Application in Detection of Isorhamnetin in Medicines |
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DOI: |
KeyWord:L-aspartic acid urea carbon quantum dots(CDs) isorhamnetin quench |
Author | Institution |
LI Hai-hong,LIU Li-zhen,FENG Feng |
1.School of Chemistry and Materials Science,Shanxi Normal University;2.College of Chemistry and Chemical Engineering,Shanxi Datong University |
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Abstract: |
kind of novel fluorescence carbon quantum dots(CDs) were fabricated by microwave heating method using L aspartic acid and urea as the precursors.The obtained CDs exhibited good spherical shapes with an average size about 5 nm.In addition,the CDs were characterized by Fourier transform infared spectroscopy,X-ray photoelectron spectroscopy,ultraviolet-visible absorption spectroscopy and fluorescence spectroscopy.The CDs showed high fluorescence stability,good particle dispersion,excellent water solubility and remarkable selectivity toward isorhamnetin(ISOR).Under the optimized conditions,there was a good relationship between fluorescence quenched degree(IF0/IF) of the CDs and concentration of ISOR in the range of 0.22-180 nmol/L with a limit of detection(LOD) of 1.32 nmol/L.The CDs were successfully applied in the detection of ISOR in ginkgo biloba tablets with recoveries of 90.8%-107%.Results showed that the as synthesized CDs could be used in ISOR detection with rapidness,efficiency and sensitivity. |
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