Natural Raw Materials Green Synthetic Hybrid Carbon Quantum Dots Performance And Functional Applications

Carbon quantum dots,as a member of the family of carbon nanomaterials,have the advantages of traditional carbon nanomaterials such as small particle size,large specific surface area,large chemical inertness,low toxicity,etc.Quantum dots also have their own unique advantages.Similar to various metal quantum dots,carbon quantum dots emit bright light when illuminated.Compared with conventional semiconductor quantum dots,carbon quantum dots have high chemical stability and no Photobleaching and light blinking are good alternatives to bioimaging,biomarkers,etc.The main contents of this article are as follows:Using a wide range of sources,green,cheap and readily available kelp as a natural carbon source,prepared by hydrothermal synthesis of water-soluble,fluorescent excellent performance and excellent biocompatibility hybrid carbon quantum dots.The water solubility of carbon quantum dots is proved by Raman spectroscopy and infrared spectroscopy.The elemental composition and structural characteristics of carbon quantum dots were analyzed by X-ray absorption spectroscopy.The optical properties of carbon quantum dots were characterized by UV-Vis absorption spectra and fluorescence spectra.The surface size of the carbon quantum was characterized by TEM and particle size analysis.Cytotoxicity experiments on the hybrid carbon quantum dots obtained above demonstrate the low biological toxicity of carbon quantum dots.Cells were imaged using a hybridized carbon quantum dot laser scanning confocal microscope to investigate the distribution of carbon quantum dots within the cell.The effect of carbon quantum dots on the overall development of the organism was demonstrated by analyzing the hatching rate of zebrafish eggs under immersion at a carbon point.The above zebrafish was observed by fluorescence confocal microscopy to understand the imaging of carbon quantum dots in vivo and to explore the potential of carbon quantum dots for bioimaging.Through further hydrothermal synthesis,Fe3O4/hybrid carbon quantum dot composites were prepared.The infrared spectra of the quantum dots proved that the synthesized carbon quantum dots have good water solubility.The elemental composition of the carbon quantum dots is analyzed by X-ray absorption spectroscopy.Structural characteristics were characterized by UV-Vis absorption and fluorescence spectroscopy to demonstrate the optical properties of carbon quantum dots.