A facile synthesis of water-soluble carbon dots as a label-free fluorescent probe for rapid, selective and sensitive detection of picric acid

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• 作者：Yu Zhu Fan^aAuthor Vitae ; Ying Zhang^a ; ^bAuthor Vitae ; Na Li^aAuthor Vitae ; Shi Gang Liu^aAuthor Vitae ; Ting Liu^aAuthor Vitae ; Nian Bing Li^a ; ^{linb@swu.edu.cn}Author Vitae ; Hong Qun Luo^a ; ^{luohq@swu.edu.cn}Author Vitae
• 关键词：Carbon dots ; Picric acid ; Fluorescence quenching ; Inner filter effect ; Electron transfer
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：240
• 期：Complete
• 页码：949-955
• 全文大小：1715 K
• 卷排序：240

文摘

Carbon dots are first synthesized by one-pot method with malonic acid and urea. The carbon dots possess small size, favorable optical properties, and good stability. The fluorescence of carbon dots can be selectively quenched by picric acid in 10 s. The strategy improves the sensitivity for detection of picric acid down to 51 nM.