姜黄素
荧光
检出限
材料科学
猝灭(荧光)
碳纤维
石墨
核化学
分析化学(期刊)
氮化碳
纳米技术
化学
色谱法
光催化
有机化学
冶金
生物化学
复合数
物理
量子力学
复合材料
催化作用
作者
Hongmin Yang,Xuebing Li,Xinxv Wang,Wenfang Chen,Wei Bian,Martin M. F. Choi
出处
期刊:Luminescence
[Wiley]
日期:2018-06-26
卷期号:33 (6): 1062-1069
被引量:24
摘要
Green fluorescent silver (Ag)-doped graphite carbon nitride (Ag-g-C3 N4 ) nanosheets have been fabricated by an ultrasonic exfoliating method. The fluorescence of the Ag-g-C3 N4 nanosheets is quenched by curcumin. The fluorescence intensity decreases with the increase in the concentration of curcumin, indicating that the Ag-g-C3 N4 nanosheets can function as a non-toxic and facile fluorescence probe to detect curcumin. The fluorescence intensity of Ag-g-C3 N4 nanosheets shows a linear relationship to curcumin in the concentration range 0.01-2.00 μM with a low detection limit of 38 nM. The fluorescence quenching process between curcumin and Ag-g-C3 N4 nanosheets mainly is based on static quenching. The fluorescent probe has been successfully applied to analyse curcumin in human urine and serum samples with satisfactory results.
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