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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
发表期刊RSC ADVANCES
卷号6期号:109页码:107263-107269
文章类型Article
摘要Excitation-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标题词Science & Technology ; Physical Sciences
关键词[WOS]GRAPHENE QUANTUM DOTS ; FULL-COLOR EMISSION ; ONE-STEP SYNTHESIS ; PHOTOCATALYTIC ACTIVITY ; INDEPENDENT EMISSION ; BLUE LUMINESCENCE ; DEEP-ULTRAVIOLET ; NITROGEN ; FLUORESCENCE ; LIGHT
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000389342400015
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6177
专题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
作者单位1.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
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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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