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Fe3+ detection, bioimaging, and patterning based on bright blue-fluorescent N-doped carbon dots

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Abstract

Bright blue fluorescent N-doped carbon dots (N-CDs) with satisfactory yield (54%) were successfully fabricated by one-step hydrothermal treatment of astragalus. The obtained N-CDs possessed superior stability, solubility and high resistance to photo bleaching, and can be used as label-free nanosensors for the determination of Fe3+. The quantitative analysis of Fe3+ showed a linear range of 50 to 250 μM with the detection limit as low as 42 nM. Moreover, the as-prepared N-CDs have been used in cellular imaging owing to their distinct merits of simplicity, convenience, fast response and good selectivity towards Fe3+. Besides, the N-CDs could also be further used as fluorescent inks for drawing luminescent patterns.

Graphical abstract: Fe3+ detection, bioimaging, and patterning based on bright blue-fluorescent N-doped carbon dots

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Supplementary files

Article information


Submitted
24 May 2020
Accepted
27 May 2020
First published
03 Jun 2020

Analyst, 2020, Advance Article
Article type
Paper

Fe3+ detection, bioimaging, and patterning based on bright blue-fluorescent N-doped carbon dots

L. Li, L. Shi, J. Jia, D. Chang, C. Dong and S. Shuang, Analyst, 2020, Advance Article , DOI: 10.1039/D0AN01042A

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