Facile synthesis of nitrogen and sulfur co-doped carbon dots for multiple sensing capacities: alkaline fluorescence enhancement effect, temperature sensing, and selective detection of Fe3+ ions,New Journal of Chemistry

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Facile synthesis of nitrogen and sulfur co-doped carbon dots for multiple sensing capacities: alkaline fluorescence enhancement effect, temperature sensing, and selective detection of Fe3+ ions
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-06-23 , DOI: 10.1039/c8nj02086h
Guannan Liu _{1,

2,

3,

4,

5} , Shan Li _{1,

2,

3,

4,

5} , Ming Cheng _{1,

2,

3,

4,

5} , Lianjing Zhao _{1,

2,

3,

4,

5} , Bo Zhang _{1,

2,

3,

4,

5} , Yuan Gao _{1,

2,

3,

4,

5} , Yan Xu _{1,

2,

3,

4,

5} , Fangmeng Liu _{1,

2,

3,

4,

5} , Geyu Lu _{1,

2,

3,

4,

5}

Affiliation

In this work, we prepared nitrogen and sulfur co-doped carbon dots (C-dots) via a one-pot facile hydrothermal method using methionine and ethylenediamine as the precursors. TEM, HRTEM, FTIR and XPS were used to characterize the morphology and surface molecular structures of the N,S co-doped C-dots. The obtained C-dots showed good aqueous solubility and attractive fluorescence properties. The C-dots responded rapidly towards Fe³⁺ ions, and could be used as a fluorescent probe for Fe³⁺ ion detection. In addition, the C-dots also exhibited temperature- and pH-sensitive properties, possessing good temperature recoverability and significantly enhanced fluorescence under alkaline conditions. These excellent characteristics promise extensive potential applications for such C-dots in physiological and environmental monitoring.

中文翻译：

氮和硫共掺杂碳点的简便合成，可实现多种传感能力：碱性荧光增强效应，温度传感和对Fe ³⁺离子的选择性检测

在这项工作中，我们使用甲硫氨酸和乙二胺作为前体，通过一锅法水热法制备了氮和硫共掺杂碳点（C点）。用TEM，HRTEM，FTIR和XPS表征了N，S共掺杂C点的形貌和表面分子结构。所得的C-点显示出良好的水溶性和吸引人的荧光性质。C点对Fe ³⁺离子反应迅速，可以用作Fe ³⁺的荧光探针离子检测。此外，碳点还显示出对温度和pH敏感的特性，具有良好的温度恢复性，并在碱性条件下显着增强了荧光。这些优异的特性保证了此类C点在生理和环境监测中的广泛潜在应用。

更新日期：2018-07-24

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