Abstract:

One of the most popular traditional Chinese snacks, sugar-coated haws on a stick are favored by the old and young. Carefully prepared syrup is the key ingredient of sugar-coated haws on a stick. The syrup not only endows the snack great taste, but also brings a glittering appearance. Interestingly, syrup can emit fluorescence under UV light irradiation and it contains a well-known fluorescent material, namely carbon quantum dots. In this study, the fluorescence behavior and microstructure of the syrup were studied and some typical applications of carbon quantum dots in daily life and scientific research are briefly introduced.

Key words: Sugar-coated haws on a stick, Carbon quantum dots, Fluorescence