A kind of preparation method of poss base/rare earth ionic liquid fluorescent soft material

Abstract

The invention provides a preparation method of a POSS (Polyhedral Oligomeric Silsesquioxane)-based / rare earth ion liquid fluorescent soft material. The preparation method comprises a step of preparing a rare earth hydrochloride ethanol solution and comprises the following steps: dissolving an organic ligand into absolute ethyl alcohol; then adding the rare earth hydrochloride ethanol solution and reacting to obtain a rare earth organic complex solution; putting amino POSS into excessive amount of thionyl chloride and reacting; purifying to obtain POSS with a chlorine substituent group; adding an ethanol solution of ion liquid and reacting under the protection of N2 to obtain a POSS functionalized ion liquid molecule bridge; in the POSS functionalized ion liquid molecule bridge, adding the rare earth organic complex solution and reacting to obtain the POSS-based / rare earth ion liquid fluorescent soft material. By grafting the polyhedral oligomeric silsesquioxane, the ion liquid and the rare earth organic complex with rare earth / ions through covalent bonds and the obtained POSS-based / rare earth ion liquid fluorescent soft material has a better fluorescent performance and the thermal stability is relatively improved.

Description

technical field [0001] The invention belongs to the field of materials science, and relates to a rare earth organic nanocomposite material, in particular to a method for preparing a POSS-based / rare earth ionic liquid fluorescent soft material. Background technique [0002] Rare earth organic complexes are a very important class of photoactive substances, especially as high-efficiency luminescent materials, which were recognized earlier. Through the strong ultraviolet absorption of the organic ligand and the effective energy transfer from the ligand to the rare earth ion, the rare earth complex emits the characteristic fluorescence of the rare earth ion, and the monochromaticity of the light emission is good, the emission line is narrow, and the fluorescence lifetime is long. Therefore, many rare earth complexes have been successfully prepared into functional molecular devices, showing good application prospects in the fields of chemistry, biology, medicine and materials. ...

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Problems solved by technology

[0004] Rare earth / ionic liquid fluorescent materials in the prior art are easily affected by moisture in the air, resulting in the problem of fluorescence quenching

[0005] At present, the preparation methods of rare earth / ionic liquid luminescent materials mainly focus on simply doping rare earth small molecule complexes into ionic liquid matrix. Aggregation, fluorescence quenching and other problems

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