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Insight into excitation-related luminescence properties of carbon dots: synergistic effect from photoluminescence centers in the carbon core and on the surface
Li, Bo1,2; Guo, Yali1; Iqbal, Anam1; Dong, Yaping2; Li, Wu2; Liu, Weisheng1; Qin, Wenwu1; Wang, Yabin2,3
2016
Source PublicationRSC ADVANCES
Volume6Issue:109Pages:107263-107269
SubtypeArticle
AbstractExcitation-dependent luminescence (EDE) or excitation-independent luminescence (EIE) property of carbon dots (CDs) has attracted considerable attention. For the first time, we found that nitrogen doped CDs possess adjustable EDE and EIE properties by changing the corresponding environmental pH values for photoluminescence (PL) properties. Structural characterizations and property tests demonstrate that the unique photoluminescence properties of CDs can be attributed to the synergistic effect from the PL centers in the carbon core and on the surface. Doping nitrogen into the carbon core improves the emission efficiency of PL centers; these enhanced PL sites can even dominate fluorescence emission. Passivated surfaces of CDs modified with amino groups not only further boost the emission efficiency, but also make energy levels of PL centers more uniform. In addition, the mechanism of synergistic effect is investigated, which opens up the possibility of designing CDs with desirable PL characteristics. Such nitrogen-doped CDs with adjustable excitation-related luminescence properties have potential applications in detecting acidity or alkalinity of a certain physiological environment by intuitively observing the change in the wavelength.
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordGRAPHENE QUANTUM DOTS ; FULL-COLOR EMISSION ; ONE-STEP SYNTHESIS ; PHOTOCATALYTIC ACTIVITY ; INDEPENDENT EMISSION ; BLUE LUMINESCENCE ; DEEP-ULTRAVIOLET ; NITROGEN ; FLUORESCENCE ; LIGHT
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000389342400015
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6177
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
Affiliation1.Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
3.Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China
Recommended Citation
GB/T 7714
Li, Bo,Guo, Yali,Iqbal, Anam,et al. Insight into excitation-related luminescence properties of carbon dots: synergistic effect from photoluminescence centers in the carbon core and on the surface[J]. RSC ADVANCES,2016,6(109):107263-107269.
APA Li, Bo.,Guo, Yali.,Iqbal, Anam.,Dong, Yaping.,Li, Wu.,...&Wang, Yabin.(2016).Insight into excitation-related luminescence properties of carbon dots: synergistic effect from photoluminescence centers in the carbon core and on the surface.RSC ADVANCES,6(109),107263-107269.
MLA Li, Bo,et al."Insight into excitation-related luminescence properties of carbon dots: synergistic effect from photoluminescence centers in the carbon core and on the surface".RSC ADVANCES 6.109(2016):107263-107269.
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