Realization of the Photostable Intrinsic Core Emission from Carbon Dots through Surface Deoxidation by Ultraviolet Irradiation

doi:10.1021/acs.jpclett.9b00842

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	Realization of the Photostable Intrinsic Core Emission from Carbon Dots through Surface Deoxidation by Ultraviolet Irradiation
	M.H.Sun; C.Liang; Z.Tian; E.V.Ushakova; D.Li; G.C.Xing
	2019
发表期刊	Journal of Physical Chemistry Letters
ISSN	1948-7185
卷号	10 期号:11 页码:3094-3100
摘要	It is of a primary importance to realize the intrinsic emission from the inner carbogenic cores of carbon dots (CDs). In this work, CDs with three emission centers were synthesized by a microwave-assisted method using phloroglucinol as a precursor. The emission of these three centers has been identified as originating from molecular fluorophores, surface states of CDs, and the intrinsic CD core state. The emission from molecular fluorophores and from the surface state of CDs exhibited a weak photostability and could be photobleached as a result of UV laser irradiation. The emission from the intrinsic state of the inner carbogenic core has been found to be stable against photobleaching. On the basis of this difference in photostability, we demonstrate how the surface of CDs can be deoxidized under prolonged UV irradiation, resulting in a narrow intrinsic emission with a photoluminescence quantum yield of 17%.
关键词	light-emitting-diodes,blue luminescence,quantum dots,graphene,graphite,red,fluorescence,mechanism,green,Chemistry,Science & Technology - Other Topics,Materials Science,Physics
DOI	10.1021/acs.jpclett.9b00842
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63058
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	M.H.Sun,C.Liang,Z.Tian,et al. Realization of the Photostable Intrinsic Core Emission from Carbon Dots through Surface Deoxidation by Ultraviolet Irradiation[J]. Journal of Physical Chemistry Letters,2019,10(11):3094-3100.
APA	M.H.Sun,C.Liang,Z.Tian,E.V.Ushakova,D.Li,&G.C.Xing.(2019).Realization of the Photostable Intrinsic Core Emission from Carbon Dots through Surface Deoxidation by Ultraviolet Irradiation.Journal of Physical Chemistry Letters,10(11),3094-3100.
MLA	M.H.Sun,et al."Realization of the Photostable Intrinsic Core Emission from Carbon Dots through Surface Deoxidation by Ultraviolet Irradiation".Journal of Physical Chemistry Letters 10.11(2019):3094-3100.

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