High quantum yield nitrogen-doped carbon quantum dots: Green synthesis and application as "on-off" fluorescent sensors for specific Fe3+ions detection and cell imaging

被引：16
|
作者：
Lai, Chunmei [1 ,2 ]
Lin, Simin [1 ]
Xiong, Lei [1 ]
Wu, Yuxin [1 ]
Liu, Chao [3 ]
Jin, Yanqiao [1 ]
机构：
[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[2] Fuzhou Univ, Coll Chem, Fuzhou 350108, Peoples R China
[3] Xiamen Tungsten Co Ltd, China Natl R&D Ctr Tungsten Technol, Xiamen 361009, Peoples R China
来源：
DIAMOND AND RELATED MATERIALS | 2023年 / 133卷
关键词：
Carbon quantum dots; Fe3+ions detection; Fluorescence probe; Cell imaging; SENSITIVE DETECTION; FACILE SYNTHESIS; SELECTIVE DETECTION; FERRIC ION; PROBE; GRAPHENE; NANODOTS; ACID; NANOPARTICLES; DEHYDRATION;
D O I：
10.1016/j.diamond.2023.109702
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A nitrogen-doped carbon quantum dots (N-CQDs)-based "on-off" fluorescent nanosensor was profitably synthe-sized through one-pot hydrothermal treatment of citric acid and o-phenylenediamine for the determination of Fe3+ and imaging towards cancerous cells in vitro. The synthesized N-CQDs exhibited excellent photo-luminescence and favorable biocompatibility. The excitation-dependent fluorescence emission spectra were observed and the maximum emission wavelength was 483 nm at the excitation wavelength of 420 nm. The fluorescent N-CQDs had a selective and sensitive response to Fe3+ with a limit of detection of 0.177 mu M and an allowable detection range of 0-110 mu M. The sensor was applied for the determination of Fe3+ ions in tap water with satisfactory results. Moreover, the N-CQDs provide a practical and promising method for cellular imaging due to their excellent fluorescence potency and negligible cytotoxicity.
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页数：8
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