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Facile synthesis of AgNPs@SNCDs nanocomposites as a fluorescent ‘turn on’ sensor for detection of glutathione
Luminescence ( IF 3.2 ) Pub Date : 2020-08-24 , DOI: 10.1002/bio.3938 Zhengwei Zhang 1, 2 , Ke Pei 3 , Zhengyu Yan 1 , Jianqiu Chen 1
Luminescence ( IF 3.2 ) Pub Date : 2020-08-24 , DOI: 10.1002/bio.3938 Zhengwei Zhang 1, 2 , Ke Pei 3 , Zhengyu Yan 1 , Jianqiu Chen 1
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The present study illustrates the facile synthesis of silver nanoparticles capped with sulfur and nitrogen co‐doped carbon dots (AgNPs@SNCDs) nanocomposites and their application towards the sensitive and selective detection of glutathione (GSH) using a spectrofluorimetry method. SNCDs were synthesized using solvothermal treatment of cysteamine hydrochloride and p‐phenylenediamine. The as‐fabricated SNCDs were then utilized as capping and stabilizing agents for the preparation of AgNPs@SNCDs nanocomposites using wet chemistry. The size of AgNPs@SNCDs nanocomposites was characterized to be ~37.58 nm or even larger aggregates. Particularly, the quenched fluorescence of AgNPs@SNCDs nanocomposites could be significantly restored upon addition of GSH, and the colour of its solution changed to some extent. The fluorescence intensity ratio of AgNPs@SNCDs nanocomposites at ~450 nm and 550 nm was directly proportional to the GSH concentration within the ranges 8.35–66.83 μM and 66.83–200.5 μM, and the detection limit was 0.52 μM. Furthermore various common organic molecules had no obvious interference in the detection mode. The proposed nanosensor was successfully applied for GSH assay in actual water samples.
中文翻译：
AgNPs @ SNCDs纳米复合材料的简便合成，可作为荧光“开启”传感器检测谷胱甘肽
本研究说明了用硫和氮共掺杂碳点（AgNPs @ SNCDs）纳米复合材料封端的银纳米颗粒的简便合成及其在使用光谱荧光法灵敏和选择性检测谷胱甘肽（GSH）中的应用。SNCD通过溶剂热处理盐酸半胱胺和p合成苯二胺。然后，将制成的SNCD用作封端剂和稳定剂，使用湿化学法制备AgNPs @ SNCD纳米复合材料。AgNPs @ SNCDs纳米复合材料的大小表征为〜37.58 nm甚至更大的聚集体。特别地，加入GSH可以显着恢复AgNPs @ SNCDs纳米复合材料的猝灭荧光，其溶液的颜色在一定程度上发生了变化。AgNPs @ SNCDs纳米复合材料在〜450 nm和550 nm处的荧光强度比与GSH浓度成正比，范围为8.35–66.83μM和66.83–200.5μM，检出限为0.52μM。此外，各种常见的有机分子在检测模式上没有明显的干扰。所提出的纳米传感器已成功应用于实际水样中的GSH测定。
更新日期：2020-08-24
中文翻译：
AgNPs @ SNCDs纳米复合材料的简便合成，可作为荧光“开启”传感器检测谷胱甘肽
本研究说明了用硫和氮共掺杂碳点（AgNPs @ SNCDs）纳米复合材料封端的银纳米颗粒的简便合成及其在使用光谱荧光法灵敏和选择性检测谷胱甘肽（GSH）中的应用。SNCD通过溶剂热处理盐酸半胱胺和p合成苯二胺。然后，将制成的SNCD用作封端剂和稳定剂，使用湿化学法制备AgNPs @ SNCD纳米复合材料。AgNPs @ SNCDs纳米复合材料的大小表征为〜37.58 nm甚至更大的聚集体。特别地，加入GSH可以显着恢复AgNPs @ SNCDs纳米复合材料的猝灭荧光，其溶液的颜色在一定程度上发生了变化。AgNPs @ SNCDs纳米复合材料在〜450 nm和550 nm处的荧光强度比与GSH浓度成正比，范围为8.35–66.83μM和66.83–200.5μM，检出限为0.52μM。此外，各种常见的有机分子在检测模式上没有明显的干扰。所提出的纳米传感器已成功应用于实际水样中的GSH测定。
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