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Red Emissive Sulfur, Nitrogen Codoped Carbon Dots and Their Application in Ion Detection and Theranostics (vol 9, pg 18549, 2017)
Miao, X.; X. L. Yan; D. Qu; D. B. Li; F. F. Tao and Z. C. Sun
2017
Source PublicationAcs Applied Materials & Interfaces
Volume9Issue:29
AbstractIt is highly desirable and a great challenge for red light emission of carbon dots under long wavelength excitation. Here, we developed a facile route to synthesize carbon dots with red emission due to the doping effect of S and N elements, borrowing from the concept of the semiconductor. The maximum emission locates at 594 nm under 560 nm excitation. The absolute photoluminescence (PL) quantum yield (QY) is as high as 29% and 22% in ethanol and water, respectively. XPS and FTIR spectra illustrated that there exist -SCN and -COOH groups on the surface of the carbon dots. They endow the carbon dots with high sensitivity for ion detection of Fe3+. The quenched PL emission of Fe3+-S,N-CDs can be recovered by adding ascorbic acid to release the -COOH and -SCN group due to Fe2+ formation in the presence of ascorbic acid. High PL QY of red emission is beneficial to application in bioimaging. Doxorubicin was loaded onto carbon dots through pi-pi stacking to form a theranostic agent. When the CD-Dox was injected into the tumor site, a strong PL emission was observed. The PL intensity indicates the concentration of the theranostic agent. After 7 times injection, both the tumor size and weight clearly decrease. The results demonstrate that the S,N-CDs are a potentially excellent bioimaging component in the theranostic field.
Indexed Bysci ; ei
Language英语
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59141
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Miao, X.,X. L. Yan,D. Qu,et al. Red Emissive Sulfur, Nitrogen Codoped Carbon Dots and Their Application in Ion Detection and Theranostics (vol 9, pg 18549, 2017)[J]. Acs Applied Materials & Interfaces,2017,9(29).
APA Miao, X.,X. L. Yan,D. Qu,D. B. Li,&F. F. Tao and Z. C. Sun.(2017).Red Emissive Sulfur, Nitrogen Codoped Carbon Dots and Their Application in Ion Detection and Theranostics (vol 9, pg 18549, 2017).Acs Applied Materials & Interfaces,9(29).
MLA Miao, X.,et al."Red Emissive Sulfur, Nitrogen Codoped Carbon Dots and Their Application in Ion Detection and Theranostics (vol 9, pg 18549, 2017)".Acs Applied Materials & Interfaces 9.29(2017).
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