孟加拉玫瑰
检出限
荧光
量子产额
离子
分析化学(期刊)
碳纤维
生物相容性
量子点
化学
产量(工程)
材料科学
粒径
核化学
色谱法
纳米技术
物理化学
光学
物理
有机化学
冶金
复合数
复合材料
作者
Chenyu Li,Wenjie Zhang,Wen‐Zhu Bi,Qiujuan Ma,Suxiang Feng,Xiaolan Chen,Lingbo Qu
标识
DOI:10.1002/slct.202302661
摘要
Abstract In this study, rose bengal‐derived carbon quantum dots (RB‐CQDs) was synthesized by a one‐step solvothermal method using rose bengal and 1,2‐phenylenediamine as precursors in ethanol at 180 °C for 10 h and purified by silica gel chromatography. The as‐synthesized RB‐CQDs disperses well in water with particle sizes ranging from 0.78 to 2.46 nm and exhibits excitation‐independent yellow fluorescent emission (529 nm), high quantum yield (44.3 %) and good biocompatibility. More importantly, the fluorescence of RB‐CQDs can be selectively quenched by Fe 3+ ions with good linear correlation and the detection limit is 19.9 nM. The recoveries of this method in actual water samples are 90 % to 110 % with relative standard deviations less than 5 %.
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