Insight into excitation-related luminescence properties of carbon dots: synergistic effect from photoluminescence centers in the carbon core and on the surface

ISL OpenIR > 青海盐湖研究所知识仓储

	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, Yali 1; Iqbal, Anam 1; Dong, Yaping2 ; Li, Wu2 ; Liu, Weisheng 1; Qin, Wenwu 1; Wang, Yabin 2,3
	2016
发表期刊	RSC ADVANCES
卷号	6 期号:109 页码:107263-107269
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.
语种	英语
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
推荐引用方式 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.