Preparation and Applications of Chiral Carbon Dots Prepared via Hydrothermal Carbonization Method

As an emerging carbon nanomaterial, chiral carbon dots ( CCDs) have the unique photoelectric properties of carbon dots and chiral characteristics, which have good development prospects. The preparation of CCDs by hydrothermal carbonization includes a one-step method based on the chiral transfer strategy and a two-step method based on the chiral inheritance strategy, which exhibited the advantages of easy control of chiral structure, adjustable optical properties, environmental friendliness and excellent water solubility. It has good application effects in the fields of biomedicine, sensing, asymmetric catalysis, optoelectronic materials and composites, and is the most widely used preparation method at present. In this paper, the effects of experimental conditions (source types, hydrothermal conditions) on the chiral characteristics, physical chemical structure, optical properties and electrical properties of CCDs prepared by hydrothermal carbonization are reviewed. The applications of chiral carbon dots are summarized and their future developments are prospected.