检出限
多巴胺
发光
双模
碳纤维
选择性
猝灭(荧光)
化学
荧光
比色法
兴奋剂
光化学
分析化学(期刊)
材料科学
色谱法
光电子学
有机化学
生物
催化作用
光学
工程类
复合材料
航空航天工程
复合数
神经科学
物理
作者
Peng Sun,Shang MingZhao,Ruyan Xie,Yanhua Gao,Miaomiao Tian,Qijun Dai,Fang Zhang,Fang Chai
标识
DOI:10.1016/j.foodchem.2024.138794
摘要
Determination of dopamine (DA) is crucial for its intimate relationship with clinical trials and biological environment. Herein, Fe, N co-doped carbon dots (AFC-CDs) were fabricated by optimizing precursors and reaction conditions for fluorimetric/colorimetric dual-mode sensing of DA. With synergistic influence of Förster resonance energy transfer and static quenching effect, DA significantly quenched the blue luminescence of AFC-CDs at 442 nm, the production of recognizable tan-brown complex caused evident colorimetric response, achieved the dual-mode fluorimetric/colorimetric sensing for DA. The excellent selectivity and satisfied sensitivity can be confirmed with the limit of detection at 0.29 μM and 2.31 μM via fluorimetric/colorimetric mode respectively. The reliability and practicability were proved by recovery of 94.81–101.61% in real samples. Notably, the proposed electron transfer way between AFC-CDs and DA was hypothesized logically, indicated dual-mode probe provided a promising platform for the sensing of trace DA, and could be expanded in environment and food safety.
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