Issue 15, 2019, Issue in Progress

One-step hydrothermal synthesis and optical properties of self-quenching-resistant carbon dots towards fluorescent ink and as nanosensors for Fe3+ detection

Abstract

In our work, blue photoluminescent N-doped carbon dots (CDs) were developed via a green and simple hydrothermal method with citric acid and polyvinyl pyrrolidone (PVP K-30) as the carbon source and the nitrogen source, respectively. The as-prepared CDs have a high fluorescent quantum yield of 30.21% and considerable luminescence stability. The fluorescence intensity of the CDs was found to be effective quenched when adding Fe3+ ions to the CDs solution. The quenching phenomenon can be used to detect Fe3+ ions within a linear range of 0–300 μM with a detection limit of 45.5 nmol L−1, which suggested its potential application in the detection of Fe3+ ions. At the same time, we also noted the excellent self-quenching-resistant property of the as-prepared CDs in the solid state, and bright blue fluorescence was observed under UV excitation. What's more, the as-prepared CDs can also be used as fluorescent ink and were presented under UV excitation.

Graphical abstract: One-step hydrothermal synthesis and optical properties of self-quenching-resistant carbon dots towards fluorescent ink and as nanosensors for Fe3+ detection

Article information

Article type
Paper
Submitted
26 Dec 2018
Accepted
25 Feb 2019
First published
12 Mar 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 8290-8299

One-step hydrothermal synthesis and optical properties of self-quenching-resistant carbon dots towards fluorescent ink and as nanosensors for Fe3+ detection

D. Xu, F. Lei, H. Chen, L. Yin, Y. Shi and J. Xie, RSC Adv., 2019, 9, 8290 DOI: 10.1039/C8RA10570G

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