Fluorescent carbon dot with dual functions of catalysis and indication, its preparation method and application

Abstract

The invention discloses a fluorescent carbon dot with catalyzing and indicating functions, a preparation method of the fluorescent carbon dot and an application. The preparation method includes the steps: firstly, mixing paramagnetic phthalocyanine materials and solvents; secondly, performing water-heat treatment on mixture; finally, performing purification to obtain the fluorescent carbon dot with the catalyzing and indicating functions. The fluorescent carbon dot is good in fluorescence property and light stability and high in quantum yield and can catalyze and degrade active oxygen (.OH) generated by hydrogen peroxide, generated active oxygen levels can be monitored through fluorescence change of carbon dots, and the fluorescent carbon dot has the advantages of low toxicity, biocompatibility and the like, so that the fluorescent carbon dot can be applied to detection of active oxygen levels in cells and monitoring of cell apoptosis processes in biological systems.

Description

technical field [0001] The invention relates to the technical field of fluorescent nanomaterials and the field of catalysis, in particular to a fluorescent carbon point with dual functions of catalysis and indication, and a preparation method and application thereof. Background technique [0002] In recent years, carbon dots, as a kind of fluorescent nanomaterials, have attracted more and more attention from researchers. Carbon dots are widely used in biomedical fields such as biosensing and cell imaging due to the abundant and easy-to-obtain raw materials, simple synthesis methods, and especially the advantages of low toxicity, photobleaching resistance, and biocompatibility. Recently, there have been reports on the catalytic application of carbon dots, mainly carbon dots, as a carbonaceous material, have good properties of photogenerated electrons, and can be used as electron donors and acceptors to speed up the transfer of electrons, thereby improving catalytic performanc...

AI Technical Summary

Problems solved by technology

However, in the current preparation process of carbon dots, most of the carbon sources have poor water solubility, resulting in low yield of carbon dots, poor fluorescence properties, and short fluorescence lifetime, which is not conducive to the further analysis and application of carbon dots.

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