材料科学
试剂
环境友好型
硫黄
荧光
碳纤维
光致发光
兴奋剂
热解
柠檬酸
生物相容性
纳米技术
光化学
溶剂
氮气
化学工程
光电子学
有机化学
化学
光学
冶金
复合材料
生物
工程类
生态学
物理
复合数
作者
Dinh Khoi Dang,Nguyễn Văn Nghĩa,Zeeshan Tahir,Hyunsun Jeong,Sungdo Kim,Hong Nhan Tran,Shinuk Cho,Yun Chang Park,Jong‐Seong Bae,Chinh Tam Le,Juyoung Yoon,Yong Soo Kim
标识
DOI:10.1021/acsami.3c06093
摘要
A cost-effective and environmentally friendly approach is proposed for producing N- and S-codoped multicolor-emission carbon dots (N- and S-codoped MCDs) at a mild reaction temperature (150 °C) and relatively short time (3 h). In this process, adenine sulfate acts as a novel precursor and doping agent, effectively reacting with other reagents such as citric acid, para-aminosalicylic acid, and ortho-phenylenediamine, even during solvent-free pyrolysis. The distinctive structures of reagents lead to the increased amount of graphitic nitrogen and sulfur doping in the N- and S-codoped MCDs. Notably, the obtained N- and S-codoped MCDs exhibit considerable fluorescence intensities, and their emission color can be adjusted from blue to yellow. The observed tunable photoluminescence can be attributed to variations in the surface state and the amount of N and S contents. Furthermore, due to the favorable optical properties, good water solubility and biocompatibility, and low cytotoxicity, these N- and S-codoped MCDs, especially green carbon dots, are successfully applied as fluorescent probes for bioimaging. The affordable and environmentally friendly synthesis method employed to create N- and S-codoped MCDs, combined with their remarkable optical properties, offers a promising avenue for their use in various fields, particularly in biomedical applications.
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