Zhou, X.; Cao, Y.; Zhou, X.; Xu, L.; Zhang, D.; Wang, C.; Chu, F.; Qian, T. Nanosensors Based on Structural Memory Carbon Nanodots for Ag+ Fluorescence Determination. Nanomaterials2021, 11, 2687.
Zhou, X.; Cao, Y.; Zhou, X.; Xu, L.; Zhang, D.; Wang, C.; Chu, F.; Qian, T. Nanosensors Based on Structural Memory Carbon Nanodots for Ag+ Fluorescence Determination. Nanomaterials 2021, 11, 2687.
Ag+ pollution is great of harm to the human body and the biology. Therefore, it is an urgent need to develop inexpensive and accurate detection methods. Herein, lignin-derived structural memory carbon nanodots (CSM-dots) with outstanding fluorescence property were fabricated via a green method, which reserve functional and structural units of the precursor molecules. The CSM-dots could specifically bind Ag+, accompanied with a remarkable fluorescence quenching response. This “turn-off” fluorescence behavior was used for Ag+ determination in a linear range of 5-290 μM with the detection limit as low as 500 nM. Furthermore, the finding showed that this sensing nano-platform was successfully used for Ag+ determination in real samples and intracellular imaging, showing great potential in biological and environmental monitoring applications.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.