Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
Nanoscale. 2014;6(3):1890-5. doi: 10.1039/c3nr05380f.
The synthesis of water-soluble nitrogen-doped carbon dots has received great attention, due to their wide applications in oxygen reduction reaction, cell imaging, sensors, and drug delivery. Herein, nitrogen-doped, carbon-rich, highly photoluminescent carbon dots have been synthesized for the first time from ammonium citrate under hydrothermal conditions. The obtained nitrogen-doped carbon dots possess bright blue luminescence, short fluorescence lifetime, pH-sensitivity and excellent stability at a high salt concentration. They have potential to be used for pH sensors, cell imaging, solar cells, and photocatalysis.
水溶性氮掺杂碳点的合成受到了广泛关注，因为它们在氧还原反应、细胞成像、传感器和药物输送等领域有广泛的应用。本文首次在水热条件下，以柠檬酸铵为原料合成了氮掺杂、富碳、高磷光的碳点。所得到的氮掺杂碳点具有明亮的蓝色磷光、短荧光寿命、对 pH 的敏感性以及在高盐浓度下的优异稳定性。它们有望用于 pH 传感器、细胞成像、太阳能电池和光催化。
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