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Facilely synthesized N-doped carbon quantum dots with high fluorescent yield for sensing Fe3+
被引:150
|作者:
Yu, Jing
[1
]
Xu, Chunxiang
[1
]
Tian, Zhengshan
[1
]
Lin, Yi
[1
]
Shi, Zengliang
[1
]
机构:
[1] Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Bioelect, Nanjing 210096, Jiangsu, Peoples R China
关键词:
ONE-STEP PREPARATION;
TURN-ON DETECTION;
HYDROTHERMAL SYNTHESIS;
SENSITIVE DETECTION;
HYDROGEN-PEROXIDE;
PHASE SYNTHESIS;
GRAPHENE OXIDE;
NITROGEN;
NANODOTS;
PROBE;
D O I:
10.1039/c5nj03252k
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Nitrogen doped carbon quantum dots (NCQDs) were synthesized using L-glutamic acid as raw material through a facile, effective and green hydrothermal method in one pot. Without any chemical reagents and further surface modifications, the NCQDs emit bright blue fluorescence with a high quantum yield of 17.8% due to the fluorescence enhancement effect of N dopant atoms on a surface of carbon quantum dots. Moreover, the NCQDs present a sensitive response to Fe3+ ions with a detection limit of 4.67 mu M (S/N = 3) through the variation in fluorescence with respect to the target concentration and based on electron transfer from the NCQDs to Fe3+ ions.
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页码:2083 / 2088
页数:6
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