TY - JOUR
T1 - Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots
AU - Liu, Ruihua
AU - Li, Haitao
AU - Kong, Weiqian
AU - Liu, Juan
AU - Liu, Yang
AU - Tong, Cuiyan
AU - Zhang, Xing
AU - Kang, Zhenhui
N1 - Funding Information:
This work is supported by the National Basic Research Program of China (973 Program) ( 2012CB825800 , 2013CB932702 ), the National Natural Science Foundation of China ( 51132006 , 21073127 , 21071104 ), the Specialized Research Fund for the Doctoral Program of Higher Education ( 20123201110018 ), a Suzhou Planning Project of Science and Technology (ZXG2012028), a Foundation for the Author of National Excellent Doctoral Dissertation of China (200929), and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
PY - 2013/7
Y1 - 2013/7
N2 - Fluorescent carbon dots (FCDs) were efficiently synthesized by one-step sodium hydroxide-assisted reflux method from poly(ethylene glycol) (PEG). The obtained FCDs exhibit excellent water-solubility and high stability. Under the UV irradiation, the FCDs could emit bright blue photoluminescence, and also they were found to show excellent up-conversion fluorescence. It was further demonstrated that such FCDs can serve as effective fluorescent sensing platform for Hg2+ ions detection with ultra-sensitivity and selectivity. The sensing system achieved a limit of detection as low as 1 fM, which is much lower than all the previous reported sensing systems for Hg2+ ions detection. This FCDs sensing system has been successfully applied for the analysis of Hg2+ ions in water samples from river, lake, and tap water, showing good practical feasibility.
AB - Fluorescent carbon dots (FCDs) were efficiently synthesized by one-step sodium hydroxide-assisted reflux method from poly(ethylene glycol) (PEG). The obtained FCDs exhibit excellent water-solubility and high stability. Under the UV irradiation, the FCDs could emit bright blue photoluminescence, and also they were found to show excellent up-conversion fluorescence. It was further demonstrated that such FCDs can serve as effective fluorescent sensing platform for Hg2+ ions detection with ultra-sensitivity and selectivity. The sensing system achieved a limit of detection as low as 1 fM, which is much lower than all the previous reported sensing systems for Hg2+ ions detection. This FCDs sensing system has been successfully applied for the analysis of Hg2+ ions in water samples from river, lake, and tap water, showing good practical feasibility.
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U2 - 10.1016/j.materresbull.2013.03.015
DO - 10.1016/j.materresbull.2013.03.015
M3 - Article
AN - SCOPUS:84877580310
VL - 48
SP - 2529
EP - 2534
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 7
ER -