| 초록 |
Recently graphene quantum dots (GQDs) have been of great interest because of their excellent properties such as excitation wavelength dependent emission, high photo-stability, strong chemical stability, good biocompatibility and excellent charge transport. So far, GQDs have been successfully synthesized by various method. However, it is still challenging to synthesize GQDs with high quality graphitic structure and controllable size via solution chemistry because the convention bottom-up methods produced carbon dots with low crystallinity and the top-down method yielded GQDs with broad size distribution, broad photoluminescence spectrum and low quantum yield. Here, we synthesized GQDs with high quality crystallinity and uniform controllable size via one-pot single-phase solution chemistry. It is based on dehydration of d-glucose under amine and acetic acid catalytic condition on the basis of taking in-situ 1H NMR spectroscopy during the reaction. |
