Aggregation induced emission enhancement of nickel nanoclusters for highly sensitive fluorescent "turn on" sensing of chlortetracycline in food

文献类型： 外文期刊

第一作者： Barimah, Alberta Osei

作者： Barimah, Alberta Osei;Chao, Mengjia;Tai, Shengmei;Sun, Chengdong;Peng, Chifang;Wang, Zhouping;Addotey, Tracy Naa Adoley;Barimah, Alberta Osei;Chao, Mengjia;Tai, Shengmei;Sun, Chengdong;Peng, Chifang;Wang, Zhouping;Addotey, Tracy Naa Adoley;Mao, Minxin;Peng, Chifang;Wang, Zhouping;Agyekum, Akwasi Akomeah

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关键词： Aggregation induced enhancement; Ni-BSA nanoclusters; Turn-on fluorescence; Chlortetracycline

期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：5.1； 五年影响因子：4.7 ）

ISSN： 0026-265X

年卷期： 2025 年 210 卷

页码：

收录情况： SCI

摘要： Fluorescence methods for detecting tetracycline antibiotics (TCAs) residues in food have gained expansive attention. Nonetheless, achieving a highly sensitive and selective fluorescence "turn on" sensing for TCAs is still challenging. In this study, a weak light green emitting bovine serum albumin (BSA)-templated nickel (Ni) nanoclusters (NiNCs) was synthesized through a simple one-pot method and utilized as a fluorescence sensor to detect chlortetracycline (CTC). Upon adding CTC to the NiNCs solution, CTC could interact with the BSA residues in the NiNCs through van der Waals forces, halogen and hydrogen bonding, which formed BSA-NiNCs aggregates, causing the accumulation of CTC into the aggregates and producing greatly enhanced bright blue fluorescence emission. As a result, a fluorescent turn-on detection mode was achieved for CTC with a detection range of 0.01-75 mu M and a detection limit of 4.2 nM. The proposed detection system was highly selective, stable, and effectively applied for CTC detection in milk and honey samples with good recoveries (82.8-105.4 %), depicting its high practical potential in CTC detection.

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