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化学工业与工程 2020, Vol. 37 Issue (2) :54-59    DOI: 10.13353/j.issn.1004.9533.20191006
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碳点-金纳米簇结合的双发射荧光探针的制备及传感应用
张晓音, 余莉萍
天津大学理学院, 天津 300350
Preparation and Application of Dual-Emission Fluorescent Probe Based on Carbon Dots Coupled with Gold Nanoclusters
Zhang Xiaoyin, Yu Liping
School of Science, Tianjin University, Tianjin 300350, China

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摘要 先以柠檬酸为原料采用水热合成法合成了碳点(CD),再以乙酰化含硫超支化聚酰胺-胺[HPA(S)-Ac]为模板和还原剂还原氯金酸(HAuCl4)制备了金纳米簇(AuNCs),碳点和金纳米簇溶液混合后得到双发射荧光探针(CD-AuNCs),透射电镜结果表明CD和AuNCs粒径均接近2 nm,在CD-AuNCs中分散均匀。考察pH值对CD-AuNCs荧光性能的影响时发现CD-AuNCs的荧光在pH=6达到最强,且在此pH值下CD-AuNCs对四环素类药物(TCs)的响应灵敏,能够实现对TCs的传感。CD-AuNCs探针不仅选择性好,而且和单一CD探针相比具有线性范围更宽、灵敏度更高的优点。
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张晓音
余莉萍
关键词碳点;   金纳米簇;   四环素     
Abstract: Carbon dots (CD) were synthesized from citric acid using a hydrothermal method, and gold nanoclusters (AuNCs) were prepared from chloroauric acid (HAuCl4) with sulfur-containing hyperbranched polyamide-amines as template and reducing agent. Then, the double-emitting fluorescent probes (CD-AuNCs) were obtained by mixing carbon dots and gold nanoclusters. Transmission electron microscopy images showed that the particle diameters of CD both were about 2 nm and dispersed uniformly. The effect of pH on the fluorescence performance of CD-AuNCs was investigated. It was found that the fluorescence of CD-AuNCs reached the strongest at pH=6, and CD-AuNCs responsed sensitively to tetracyclines (TCs) at this pH. The CD-AuNCs probe is not only highly selective, but also has the advantages of a wider linear range and a higher sensitivity than the single CD probe.
Keywordscarbon dots;   gold nanoclusters;   tetracyclines     
Received 2019-01-26;
Corresponding Authors: 余莉萍,E-mail:lipingyu@tju.edu.cn。     Email: lipingyu@tju.edu.cn
About author: 张晓音(1993-),女,硕士研究生,主要研究方向纳米荧光探针的制备及传感应用。
引用本文:   
张晓音, 余莉萍.碳点-金纳米簇结合的双发射荧光探针的制备及传感应用[J].  化学工业与工程, 2020,37(2): 54-59
Zhang Xiaoyin, Yu Liping.Preparation and Application of Dual-Emission Fluorescent Probe Based on Carbon Dots Coupled with Gold Nanoclusters[J].  Chemcial Industry and Engineering, 2020,37(2): 54-59
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