A method for preparing fluorescent carbon dots to detect aureomycin using p-phenylenediamine and acetic acid as carbon sources

Abstract

The invention discloses a method for preparing fluorescent carbon dots to detect aureomycin by using p-phenylenediamine and acetic acid as carbon sources: using p-phenylenediamine and acetic acid as carbon sources, ethanol as a dispersion system, and heating in a solvothermal reactor , synthesize orange-red fluorescent carbon dot solution; the synthesized carbon dots have fluorescence characteristics, the maximum excitation wavelength is 527 nm, and the maximum emission wavelength is 576 nm; after the carbon dot solution reacts with different concentrations of aureomycin solutions, the fluorescent carbon dot solution There is a good linear relationship between the fluorescence intensity value and the concentration of aureomycin ( I F - I F0 ) / I F0 =2.9257×10 6 c +0.3473, where I F is the fluorescence intensity value, c is the concentration of aureomycin, and the range of detectable solution concentration of aureomycin is 1.0×10 ‑8 –1.0×10 ‑5 mol L ‑1 , the detection limit is: 1.5×10 ‑9 mol L ‑1 . The invention has simple process, can quickly prepare fluorescent carbon dots, and can accurately measure the concentration of aureomycin in a solution. According to the linear relationship, three synthetic samples were determined, and the recovery rate was 97.10%–99.20%, which indicated that the method had good practical application value.

Description

technical field [0001] The invention belongs to the technical field of chemical application, and in particular relates to a method for preparing fluorescent carbon dots to detect aureomycin by using p-phenylenediamine and acetic acid as carbon sources. Background technique [0002] Carbon dots (CDs) are a new type of fluorescent nanomaterials. The shape of carbon dots is spherical and granular, and the size is generally within 10 nm. The chemical composition is mainly composed of four elements: C, H, O and N. . Carbon dots have many excellent properties: such as: high luminous efficiency, good stability, rich raw materials, small particle size, low molecular weight, good biocompatibility, low toxicity, rich groups on the surface, easy to mix with drugs, etc. Molecular combination is a good biomedical carrier. However, the carbon dots prepared at this stage still have some shortcomings. For example, wavelength regulation is difficult to achieve. Most of the reported emiss...

AI Technical Summary

Problems solved by technology

However, the carbon dots prepared at this stage still have some shortcomings

For example, wavelength regulation is difficult to achieve

Images