Method for improving luminescence intensity of room temperature phosphorescent material

Abstract

The invention belongs to the field of luminescent materials, particularly relates to a method for improving the luminescence intensity of a room temperature phosphorescent material and provides a highluminescence intensity supramolecular room temperature phosphorescent material and a preparation method thereof. Through direct or indirect oxidation treatment on a hybrid supramolecular gel phosphorescent material formed from tetracarbonyl phenyl metal porphyrin (M-TCPP), a cationic surfactant and N, N'-dibenzoyl-L-cysteine (DBC) so that the disulfide bond of the gel factor in the phosphorescentmaterial is oxidized into a sulfonic acid group and the room temperature phosphorescent material with high luminescence intensity is obtained. Compared with the material without direct or indirect oxidation, the room temperature phosphorescent material improves luminescence intensity by close to 100 times and keeps the stability of the luminescence intensity at pH of 2-12.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and more specifically relates to a method for increasing the luminous intensity of a room temperature phosphorescent material, a supramolecular room temperature phosphorescent material with high luminous intensity and a preparation method thereof. Background technique [0002] In recent years, due to the advantages of good selectivity, large Stokes shift, and long life, room temperature phosphorescence technology has been widely used in many fields such as biological imaging, chemical sensors, and optoelectronic devices. However, at room temperature, the excited triplet state of phosphorescent molecules is easily quenched by paramagnetic substances, or inactivated by collision with solvent molecules, resulting in very weak phosphorescence intensity in fluid media at room temperature. [0003] Therefore, the traditional way to obtain room temperature phosphorescence mainly has the following tw...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a method for increasing the luminous intensity of room temperature phosphorescent materials, a supramolecular room temperature phosphorescent material with high luminous intensity and a preparation method thereof, the purpose of which is to adopt direct or indirect oxidation methods Treating supramolecular room temperature phosphorescent materials with specific structures, the disulfide bond of the gel factor in the supramolecular phosphorescent material structure is oxidized to sulfonic acid groups through highly active oxidizing substances, making the hydrogen bonds between them more stable. At the same time, the electrostatic interaction with the cationic surfactant is stronger, which increases the rigidity of the phosphorescent molecules, thereby increasing the phosphorescence intensity at room temperature, and correspondingly obtains a room temperature phosphorescence intensity increase of nearly 100% compared with the supramolecular phosphorescent material before treatment. double the phosphorescent materials, thereby solving the technical problems that the existing room temperature phosphorescent materials have little room for improving the luminous intensity, the existing room temperature phosphorescent materials have low luminous intensity, complex preparation, narrow pH range and difficult room temperature phosphorescence regulation

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