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Issue 24, 2018
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S,N-Co-doped carbon nanoparticles with high quantum yield for metal ion detection, IMP logic gates and bioimaging applications

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Abstract

In this paper, we reported a facile approach for the preparation of sulfur and nitrogen co-doped carbon nanoparticles (S,N-CNPs) with strong blue luminescence, which exhibited multiple applications including metal ion detection, logic gate fabrication and bioimaging. S,N-CNPs were synthesized by one-step hydrothermal treatment of formamidine sulfinic acid (FAS) and ethylene glycol. The as-synthesized S,N-CNPs possess a high quantum yield (Φ = 69.04%) and display excellent photostability and storage stability. By modulating the pH environment, S,N-CNPs were successfully applied as fluorescent probes for the detection of three kinds of heavy metal ions (Hg2+, Ag+ and Ni2+). The fabricated fluorescence sensors display ultrahigh sensitivity and a wider signal response range. More importantly, ethylenediamine (or ammonium thioglycolate and glycine) could efficiently release Hg2+ (or Ag+ and Ni2+) from the S,N-CNP surface, leading to the recovery of the fluorescence. According to this phenomenon, interesting implication (IMP) logic gates were constructed. In addition, the S,N-CNPs exhibited low toxicity, good biocompatibility and easy cellular uptake behavior. Consequently, the obtained S,N-CNPs will have potential applications in multiple fields of environmental monitoring, logic gate operation, and cell bioimaging.

Graphical abstract: S,N-Co-doped carbon nanoparticles with high quantum yield for metal ion detection, IMP logic gates and bioimaging applications

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Supplementary files

Article information


Submitted
06 Sep 2018
Accepted
08 Nov 2018
First published
09 Nov 2018

New J. Chem., 2018,42, 20180-20189
Article type
Paper

S,N-Co-doped carbon nanoparticles with high quantum yield for metal ion detection, IMP logic gates and bioimaging applications

J. Song, Q. Ma, S. Zhang, H. Liu, Y. Guo and F. Feng, New J. Chem., 2018, 42, 20180
DOI: 10.1039/C8NJ04527E

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