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Orange emission N doped carbon dots as a fluorescent and colorimetric dual-mode probe for nitrite detection and cellular imaging

Abstract

A novel orange emission N doped carbon dots (N-CDs) were prepared for sensing nitrite (NO2-) with fluorescent and colorimetric dual mode. The obtained N-CDs possessed fantastic optical properties and specific response to NO2-. NO2- could induce fluorescence static quenching of N-CDs, and a friendly linear relationship was obtained in the range of 2 to 60 μM with the detection limit of 0.35 μM. More interestingly, the N-CDs exhibited ratiometric absorption signals with a visible color conversion (red-purple), which allowed to develop a simple colorimetric method for NO2- monitor in the linear range of 2-80 μM with a detection limit down to 0.13 μM. Additionally, the N-CDs were capable of monitoring NO2- in the A549 cells, which indicated its great potential in biosensing.

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Supplementary files

Article information


Submitted
25 Dec 2019
Accepted
03 Feb 2020
First published
04 Feb 2020

J. Mater. Chem. B, 2020, Accepted Manuscript
Article type
Paper

Orange emission N doped carbon dots as a fluorescent and colorimetric dual-mode probe for nitrite detection and cellular imaging

J. Jia, W. J. Lu, L. Li, Y. Gao, Y. Jiao, H. Han, C. Dong and S. Shuang, J. Mater. Chem. B, 2020, Accepted Manuscript , DOI: 10.1039/C9TB02934F

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