Synthesis method of rare earth/Schiff base SBA-15 mesoporous composite luminescent material

Abstract

The invention discloses a synthesis method of a rare earth/Schiff base SBA-15 mesoporous composite luminescent material, which comprises the following steps: dissolving N,N'-bis salicylaldehyde ethylenediamine in anhydrous ethanol, adding a silane coupling agent triethoxysilylpropyl isocyanate, reacting in a N2 protective atmosphere for 12 hours, and separating and purifying the reaction solution with a rotary evaporator to obtain a hybrid material precursor; mixing a template agent P123, 2M HCl and deionized water, adding the obtained hybrid material precursor and ethyl orthosilicate after the P123 is completely dissolved, stirring to react at 35 DEG C for 24 hours, crystallizing at 100 DEG C for 48 hours, filtering, washing, removing the template agent P123, dissolving the obtained Schiff-base-functionalized SBA-15 mesoporous material in anhydrous ethanol, adding a rare earth nitrate ethanol solution, reacting at 80 DEG C for 12 hours, filtering the reaction solution, and drying to obtain the rare earth/Schiff base SBA-15 mesoporous composite luminescent material.

Description

technical field [0001] The invention relates to a synthesis method of a novel rare earth / Schiff base SBA-15 type mesoporous composite luminescent material, belonging to the technical field of preparation of rare earth organic-inorganic hybrid materials. 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 luminescence is good, the emission line is narrow, and the fluorescence lifetime is long. Therefore, many rare earth ions and their complexes have been successfully prepared into functional molecular devices, showing good application prospects in the fields of chemistry, biology, medi...

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Problems solved by technology

[0005] The object of the present invention is to provide a method for preparing a rare earth / Schiff base mesoporous composite luminescent material in order to solve the above-mentioned technical problems such as the rare earth / Schiff base complex being unstable and easy to separate from the matrix, thereby precipitating from the matrix and causing the fluorescence performance to weaken.

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