荧光
分子间力
材料科学
氢键
硫黄
乙醚
光化学
热液循环
聚集诱导发射
电子转移
碳纤维
分子
化学工程
化学
有机化学
复合材料
工程类
冶金
物理
复合数
量子力学
作者
Zhiwen Li,Zhilin Zhou,Jianghua Wang,Tingxian Tao,Yingqiang Fu
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2023-07-13
卷期号:34 (39): 395503-395503
标识
DOI:10.1088/1361-6528/ace05a
摘要
Carbon quantum dots (CQDs) have been extensively researched as fluorescent probes, but there are few reports on fluorescence-enhanced probes. Herein, nitrogen and sulfur co-doped CQDs (N, S-CQDs) with blue aggregation-induced emission enhancement (AIEE) fluorescence were synthesized by a one-step hydrothermal reaction. N, S-CQDs can rely on the presence of -OH, C=O, -NH2, and ether bonds on their surfaces and the formation of hydrogen bonds by ciprofloxacin (CIP) containing Ar-F and -COOH functional groups to achieve effective charge transfer. In addition, CIP forces N, S-CQDs to aggregate to form cross-linked structures, which effectively limits the vibration and rotation of N, S-CQDs, leading to enhanced fluorescence of N, S-CQDs. Based on the above intermolecular charge transfer and AIEE between N, S-CQDs and CIP, an efficient and sensitive nano fluorescent probe for the detection of CIP in real water samples was developed, which can achieve sensitive detection of 3.33 × 10-8-1.13 × 10-6M CIP.
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