Issue 17, 2021

Electrochemiluminescence of water-dispersed nitrogen and sulfur doped carbon dots synthesized from amino acids

Abstract

A facile one-pot hydrothermal approach for synthesizing water-dispersed nitrogen and sulfur doped carbon dots (NS-CDs) with high luminescence quantum yield was explored, using cysteine and tryptophan as precursors. The NS-CDs were characterized by means of FT-IR spectroscopy, XRD, TEM, etc. It was found that the absolute photoluminescence quantum yield (QY) of the NS-CDs determined with an integrating sphere can reach up to 73%, with an average decay time of 17.06 ns. Electrochemiluminescence (ECL) behaviors and mechanisms of the NS-CDs/K2S2O8 coreactant system were investigated. When the working electrode was modified with the prepared NS-CDs, the ECL efficiency of the NS-CDs with K2S2O8 was 24%, relative to Ru(bpy)3Cl2/K2S2O8. This work shows great potential for the NS-CDs to be used in bioanalytical applications.

Graphical abstract: Electrochemiluminescence of water-dispersed nitrogen and sulfur doped carbon dots synthesized from amino acids

Supplementary files

Article information

Article type
Paper
Submitted
05 jun. 2021
Accepted
08 jul. 2021
First published
08 jul. 2021

Analyst, 2021,146, 5287-5293

Electrochemiluminescence of water-dispersed nitrogen and sulfur doped carbon dots synthesized from amino acids

Y. Chen, J. Lin, R. Zhang, S. He, Z. Ding and L. Ding, Analyst, 2021, 146, 5287 DOI: 10.1039/D1AN00991E

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