Issue 12, 2019

Microwave-assisted synthesis of nitrogen-rich carbon dots as effective fluorescent probes for sensitive detection of Ag+

Abstract

A simple strategy for the synthesis of fluorescent nitrogen-rich carbon dots (N-dots) is developed through microwave-assisted reaction of 2-azidoimidazole with different hydroxyl compounds. With the increase of hydroxyl groups of the crosslinkers, the emission property of the corresponding N-dots was enhanced. Among them, N-dots with 2-azidoimidazole and glycerol as the starting materials showed high monodispersity, good stability, excellent water solubility and strong fluorescence emission with fluorescence quantum yield up to 27.9%. These N-dots were further employed as an effective chemosensor for Ag+ analysis via the static quenching effect and a good linear range of Ag+ detection was obtained from 20 nM to 6 μM with a limit of detection of 6.3 nM, displaying high selectivity toward Ag+ detection in real samples.

Graphical abstract: Microwave-assisted synthesis of nitrogen-rich carbon dots as effective fluorescent probes for sensitive detection of Ag+

  • This article is part of the themed collection: Carbon Dots

Supplementary files

Article information

Article type
Research Article
Submitted
09 Okt. 2019
Accepted
23 Okt. 2019
First published
25 Okt. 2019

Mater. Chem. Front., 2019,3, 2751-2758

Microwave-assisted synthesis of nitrogen-rich carbon dots as effective fluorescent probes for sensitive detection of Ag+

J. Feng, X. Zhao, W. Bian and X. Tang, Mater. Chem. Front., 2019, 3, 2751 DOI: 10.1039/C9QM00624A

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