| 초록 |
Photoluminescent carbon nanodots (C-dots) have emerged as important materials in cell imaging, chemosensor, optical sensing, bioimaging, and optoelectronics because of their highly luminescence, excellent photostability, biocompatibility and cost effective preparation. So far, various methods have been reported to prepare the C-dots, including laser ablation, electrochemical oxidation, microwave-assisted pyrolysis, hydrothermal method and so on. In this work, we developed a new fluorescence resonance energy transfer (FRET) based fluorescence sensor by combining a fluorescent dye with C-dots for metal-ion detection. C-dots were chosen as the energy donor, because its fluorescence emission spectrum matches well with the absorption spectrum of the dye. We confirmed the combination of C-dots and the dye by infrared spectroscopy (IR) and transmission electron microscopy (TEM). We investigated optical properties and change in fluorescence by metal-ion species. |
