拉曼光谱
硫黄
X射线光电子能谱
光致发光
量子产额
量子点
透射电子显微镜
聚合
光谱学
材料科学
发光
荧光
纳米技术
产量(工程)
光化学
化学
化学工程
聚合物
光电子学
有机化学
光学
物理
工程类
冶金
量子力学
作者
Farwa Arshad,Md Palashuddin Sk,S. Maurya,Hifzur R. Siddique
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-04-01
卷期号:4 (4): 3339-3344
被引量:43
标识
DOI:10.1021/acsanm.1c00509
摘要
A mechanochemical synthesis of luminescent sulfur quantum dots (Sdots) is demonstrated for the first time to reduce the synthesis reaction time. Structural characterization using X-ray photoelectron spectroscopy, transmission electron microscopy, and Raman spectroscopy confirmed the formation of Sdots. The present method produced Sdots through a short-chain polymerization of sulfur and features an excitation-dependent photoluminescence with a quantum yield of 4.8%, high photostability, excellent hydrophilicity, and low toxicity. Further, Sdots were seen to cause a low toxicity in both normal and cancer cells, which makes this a promising candidate for bioimaging and biolabeling.
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