| 초록 |
Carbon dots (CDs) have gained tremendous interests owing to their various fascinating features including non-toxicity, bio-compatibility, chemical inertness, and cost-effectiveness. Particularly, the optical properties of CDs could be easily tuned via heteroatom doping. In this study, we report the CDs doped with nitrogen and sulfur displaying different fluorescence emission behavior under different organic solvents. The nitrogen and sulfur co-doped CDs were prepared via a solvothermal process. The as-prepared CDs were monodispersed and have good solubility in various organic solvents. The photoluminescence properties of CDs have been characterized, and CDs exhibited distinct emission spectra depending on the solvent polarity. We further fabricated a colorimetric solvent sensing platform based on hydrogel-containing CDs. The results of this study clearly demonstrate that facile synthesis of nitrogen and sulfur co-doped CDs. Furthermore, it is obvious that these CDs have a great potential as an organic solvent sensor. |
