Water-soluble carbon dots with blue, yellow and red emissions: mechanism investigation and array-based fast sensing application

In this study, three kinds of CDs with blue, yellow and red emissions were prepared and their luminescence mechanisms through theoretical calculations together with experimental data were further investigated in depth. Afterwards, a sensor array was constructed by using three kinds of CD-metal ions for rapid discrimination of different types of sulfur-containing species. This work prepared three kinds of CDs with blue, yellow and red emissions and further in-depth investigated their luminescence mechanisms through theoretical calculations together with experimental data. Afterwards, a sensor array by using these CDs for fast discriminating different types of sulfur-containing species was constructed.