| 초록 |
Since last two decade’s fluorescent carbon dots have been gaining much attention due to their fascinating properties such as low toxicity, and excellent biocompatibility relative to traditional organic dyes and inorganic semiconductor quantum dots. Herein, we present a facile, simple, and inexpensive aqueous phase nitrogen doped carbon dots from naturally occurring L-Aspatate amino acid (N-AACDs) via one step hydrothermal process. As-synthesized N-AACDs particle size was analyzed by using HRTEM, they were showing an average diameter as small as ~5.4 nm. The resulting N-AACDs exhibits stable blue fluorescence with high quantum yield (11 %) in an aqueous medium when N-AACDs. The N-AACDs were highly dispersible in water because of the enormous carboxyl (-COOH), and nitrogen containing amine (-NH2) functional groups on the surface and those functionalities were well characterized by using UV-Vis, FTIR and Zetapotentioal (δ). |
