Synthesis of carbon dots with strong luminescence in both dispersed and aggregated states by tailoring sulfur doping

doi:10.1016/j.jcis.2021.11.179

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	Synthesis of carbon dots with strong luminescence in both dispersed and aggregated states by tailoring sulfur doping
	X. J. Li; M. D. Zheng; H. J. Wang; Y. Meng; D. Wang; L. L. Liu; Q. H. Zeng; X. W. Xu; D. Zhou and H. C. Sun
刊名	Journal of Colloid and Interface Science
	2022
卷号	609 页码:54-64
ISSN号	0021-9797
DOI	10.1016/j.jcis.2021.11.179
英文摘要	Carbon dots (CDots), a class of environmentally friendly carbon-based luminescent nanomaterial, have been applied in a wide variety of fields, including bioimaging and light-emitting diodes (LEDs). Prior to these applications, however, CDots usually require modifications because some of its limitations (e.g., the aggregation-induced luminescence quenching) make it difficult to apply in solid state. In order to realize CDots-based multiple applications simultaneously, this paper examines how CDots with a strong greenish-yellow fluorescence in both dispersed and aggregated states are prepared by microwaveassisted heating salicylic acid and thiourea. Based on control testing and the analysis of density functional theory calculations, S element from thiourea is doped into CDots and proves to be critical in governing the photoluminescence (PL) emission color. Featured with excellent biocompatibility and photostability, the dispersed CDots with photoluminescence quantum yields (32%) are able to function as a biological imaging reagent in vitro and in vivo without any side effect. Furthermore, the aggregated CDots also exhibit high photoluminescence quantum yields (26%) and remarkable resistance to organic solvent. These advantages will ensure that S-doped CDots can be applied as a color conversion layer so that white LEDs with different Commission International de L'Eclariage coordinates and tunable color temperature can be fabricated. (c) 2021 Elsevier Inc. All rights reserved.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/67150]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. J. Li,M. D. Zheng,H. J. Wang,et al. Synthesis of carbon dots with strong luminescence in both dispersed and aggregated states by tailoring sulfur doping[J]. Journal of Colloid and Interface Science,2022,609:54-64.
APA	X. J. Li.,M. D. Zheng.,H. J. Wang.,Y. Meng.,D. Wang.,...&D. Zhou and H. C. Sun.(2022).Synthesis of carbon dots with strong luminescence in both dispersed and aggregated states by tailoring sulfur doping.Journal of Colloid and Interface Science,609,54-64.
MLA	X. J. Li,et al."Synthesis of carbon dots with strong luminescence in both dispersed and aggregated states by tailoring sulfur doping".Journal of Colloid and Interface Science 609(2022):54-64.