A kind of solid-state fluorescent carbon dots based on nanoporous glass and preparation method thereof

Abstract

The invention belongs to the field of fluorescent carbon nanomaterials, and specifically discloses a solid-state fluorescent carbon dot based on nanoporous glass and a preparation method thereof, comprising the following steps: preparing carbon dot powder into a carbon dot solution, and then soaking a nanoporous glass sheet In the carbon dot solution, the carbon dots in the carbon dot solution are dispersed and incorporated into the nanopores of the nanoporous glass, and the nanopores inhibit the aggregation of the carbon dots. After the nanoporous glass with carbon dots has been naturally dried, Solid-state fluorescent carbon dots based on nanoporous glass were obtained. The invention incorporates carbon dots into nanoporous glass, the method is simple, green and environmentally friendly, and can be prepared in batches, achieving good compatibility between carbon dots and glass, and the prepared solid fluorescent carbon dots have stable luminescence and high fluorescence intensity.

Description

technical field [0001] The invention belongs to the field of fluorescent carbon nanomaterials, and more particularly relates to a solid fluorescent carbon dot based on nanoporous glass and a preparation method thereof. Background technique [0002] Carbon dots are one-dimensional nanomaterials with fluorescent properties, which have the advantages of unique optical properties, good water solubility, stable luminescence properties, easy synthesis and environmental protection. This area has received great attention. [0003] However, most of the carbon dots reported in the literature have good luminescence properties in solution, while solid carbon dots are subject to the aggregation quenching effect, and in the solid state, due to the accumulation of Π electrons or energy transfer between carbon nuclei. Fluorescence quenching occurs. At present, although there are preparation methods for solid carbon dots, they are mostly limited by the complex preparation process, high pre...

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Problems solved by technology

[0003] However, most of the carbon dots reported in the current literature have good luminescent properties in solution, while solid carbon dots are subject to aggregation quenching effects, and in the solid state, due to Π electron accumulation or energy transfer between carbon nuclei, they tend to fade. fluorescence quenching

Although there are methods for the preparation of solid-state carbon dots, they are mostly limited by the complex preparation process, high preparation cost, and low carbon dot loading, which limits the application of carbon dots in lighting, energy, optoelectronic devices, and biomedicine.

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