A "turn-on" fluorescence sensor for ascorbic acid based on graphene quantum dots via fluorescence resonance energy transfer

	A "turn-on" fluorescence sensor for ascorbic acid based on graphene quantum dots via fluorescence resonance energy transfer
	Gao, Yue ; Yan, Xiaolu ; Li, Meng ; Gao, Han ; Sun, Jing ; Zhu, Shuyun ; Han, Shuang ; Jia, Li-Na ; Zhao, Xian-En ; Wang, Hua
刊名	ANALYTICAL METHODS
	2018-02-14
英文摘要	A novel turn-on fluorescent sensor for the detection of ascorbic acid (AA) has been developed based on the fluorescence resonance energy transfer (FRET) between graphene quantum dots (GQDs) and squaric acid (SQA)-iron(III). In this assay, iron(III) can rapidly coordinate with the SQA to produce SQA-iron(III). The absorbance band of SQA-iron(III) could be largely overlapped with the emission band of GQDs, thus resulting in the fluorescence resonance energy transfer (FRET)-induced fluorescence quenching of GQDs. Moreover, the fluorescence of GQDs can be sensitively turned on by AA through the oxidation-reduction between iron(III) and AA. After the transformation of SQA-iron(III) to SQA-iron(II), because the absorbance of the solution reduces, the FRET decreases. This FRET-based nanosensor shows high selective and sensitive response in the concentration of AA ranging from 1.0 to 95 mM with the detection limit as lower as 200 nM, which is lower than that of other fluorescent assays. Finally, the proposed sensing system was successfully applied to the direct analysis of AA in the real samples with satisfactory results.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/13327]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Gao, Yue,Yan, Xiaolu,Li, Meng,et al. A "turn-on" fluorescence sensor for ascorbic acid based on graphene quantum dots via fluorescence resonance energy transfer[J]. ANALYTICAL METHODS,2018.
APA	Gao, Yue.,Yan, Xiaolu.,Li, Meng.,Gao, Han.,Sun, Jing.,...&Wang, Hua.(2018).A "turn-on" fluorescence sensor for ascorbic acid based on graphene quantum dots via fluorescence resonance energy transfer.ANALYTICAL METHODS.
MLA	Gao, Yue,et al."A "turn-on" fluorescence sensor for ascorbic acid based on graphene quantum dots via fluorescence resonance energy transfer".ANALYTICAL METHODS (2018).