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Se & N co-doped carbon dots for high-performance fluorescence imaging agent of angiography
Qu, D.; X. Miao; X. T. Wang; C. Nie; Y. X. Li; L. Luo and Z. C. Sun
2017
发表期刊Journal of Materials Chemistry B
卷号5期号:25
摘要Both long wavelength excitation and emission are highly desired for fluorescent carbon dots in biorelated applications. According to semiconductor theory, heteroatom doping is an effective way to tune the band gap of a semiconductor. In this work, we developed an exceedingly simple and mild one-pot method to synthesize selenium and nitrogen co-doped carbon dots (Se&N-CDs) by using low cost citric acid, ethane diamine and selenium powder as the starting materials. After doping the Se element into N-CDs, the absorption of Se&N-CDs was expanded from UV to the visible light region (similar to 497 nm). More important is that the Se&N-CDs show a strong green light emission with a high quantum yield of B52%, attributed to the new Se-state introduced in the Se&N-CDs due to the low electronegativity of Se. Furthermore, we successfully demonstrate that Se&N-CDs have an excellent performance as a dye for fluorescein fundus angiography (FFA). After injection, a clear vascular image in the retina and detailed images of the capillary bed were exhibited in the FFA image. This will provide a great advantage for bio-imaging and diagnosis.
收录类别sci ; ei
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59166
专题中科院长春光机所知识产出
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GB/T 7714
Qu, D.,X. Miao,X. T. Wang,et al. Se & N co-doped carbon dots for high-performance fluorescence imaging agent of angiography[J]. Journal of Materials Chemistry B,2017,5(25).
APA Qu, D.,X. Miao,X. T. Wang,C. Nie,Y. X. Li,&L. Luo and Z. C. Sun.(2017).Se & N co-doped carbon dots for high-performance fluorescence imaging agent of angiography.Journal of Materials Chemistry B,5(25).
MLA Qu, D.,et al."Se & N co-doped carbon dots for high-performance fluorescence imaging agent of angiography".Journal of Materials Chemistry B 5.25(2017).
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