期刊
ACS APPLIED NANO MATERIALS
卷 4, 期 4, 页码 3339-3344出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c00509
关键词
Sdots; mechanochemical; photoluminescence; bioimaging; nontoxicity
资金
- Department of Chemistry [DRS-II (SAP)], Aligarh Muslim University (AMU)
- Department of Chemistry [DST (FIST)], Aligarh Muslim University (AMU)
- Department of Chemistry [DST (PURSE)], Aligarh Muslim University (AMU)
- DSTSERB [EMR/20l7/001758]
This study demonstrates a mechanochemical synthesis of luminescent sulfur quantum dots, showing excitation-dependent photoluminescence and low toxicity. The method also shows potential application prospects in biological imaging.
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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