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Pyridine derivative-induced fluorescence in multifunctional modified carbon dots and their application in thermometers

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Abstract

We present a simple hydrothermal method to fabricate multifunctional modified carbon dots (with –COOH, –OH, –SH, and –NH2 groups, named NS-Cdots) using citric acid and L-cysteine as raw materials. The functional NS-Cdots exhibit high fluorescent quantum yield (38.9%), low cytotoxicity and good biocompatibility. A reasonable photoluminescence mechanism of the NS-Cdots was proposed in which the pyridine derivatives serve as conjugating units and dominate the main emission behavior. The NS-Cdots can also be used as excellent fluorescent probes for cell imaging in vitro and as effective thermometers with a wide temperature detection range from 20 °C to 95 °C.

Graphical abstract: Pyridine derivative-induced fluorescence in multifunctional modified carbon dots and their application in thermometers

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Publication details

The article was received on 10 Mar 2017, accepted on 01 May 2017 and first published on 03 May 2017


Article type: Paper
DOI: 10.1039/C7TB00665A
Citation: J. Mater. Chem. B, 2017, Advance Article
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    Pyridine derivative-induced fluorescence in multifunctional modified carbon dots and their application in thermometers

    M. Han, L. Wang, L. Bai, Y. Zhou, Y. Sun, H. Li, H. Huang, Y. Liu and Z. Kang, J. Mater. Chem. B, 2017, Advance Article , DOI: 10.1039/C7TB00665A

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