荧光
四环素
土霉素
碳纤维
兴奋剂
乙二胺
材料科学
猝灭(荧光)
化学
纳米技术
光电子学
无机化学
光学
复合数
抗生素
生物化学
复合材料
物理
作者
Jia Yanchun,Zhe Cheng,Guanghui Wang,Shaomin Shuang,Yehong Zhou,Chuan Dong,Fangfang Du
出处
期刊:Food Chemistry
[Elsevier]
日期:2023-02-01
卷期号:402: 134245-134245
被引量:45
标识
DOI:10.1016/j.foodchem.2022.134245
摘要
Nitrogen-doped carbon dots (N-CDs) were synthesized hydrothermally using abundantly accessible pitaya peel and 1,2-ethylenediamine as precursors. N-CDs exhibited favorable photostability, which can serve as a multifunctional nano-sensor for detection of three tetracycline antibiotics (TCs) based on fluorescence (FL) dual-mode sensing strategy. The FL intensity of N-CDs could be rapidly quenched by tetracycline (TC) and oxytetracycline (OTC) based on bandgap transition, inner filter effect (IFE), static quenching (SQ) and electrostatic interaction. While a new finding that FL of N-CDs demonstrated a remarkable enhancement in the presence of chlortetracycline (CTC) with the same detection mechanisms as TC and OTC, also including the aggregation-induced emission (AIE). Furthermore, an easily extensible fluorescence sensor array was developed based on multiple CDs for identifying multiple TCs in real samples. Therefore, the constructed N-CDs provides a new perspective for choosing extensive natural biomass to synthesize CDs, further developing a novel sensor to realize their versatile sensing application.
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