Fluorescent material 5-{[(2-hydroxyphenyl)methyl]amino}benzene-1,3-dicarboxylic acid and synthetic method thereof

Abstract

The invention discloses a blue fluorescent material 5-{[(2-hydroxyphenyl)methyl]amino}benzene-1,3-dicarboxylic acid and a synthetic method thereof. The molecular formula of the 5-{[(2-hydroxyphenyl)methyl] amino}benzene-1,3-dicarboxylic acid is C15H13NO5, the molecular weight is 287.26, and the fluorescence peak of 5-{[(2-hydroxyphenyl)methyl]amino}benzene-1,3-dicarboxylic acid powder is at 444 nm. The synthesis steps are as follows: (1) after dissolving 5-aminoisophthalic acid in N,N-dimethylformamide while normal temperature stirring, sequentially adding anhydrous ethanol and salicylaldehyde, one day after, filtering, washing and drying to obtain orange-red Schiff base 5-{[(2-hydroxyphenyl) methylene] amino}benzene-1,3-dicarboxylic acid; (2) mixing and stirring a certain proportion of ethanol, NaOH, the orange-red Schiff base and a N, N-dimethylformamide solution containing NaBH4, after the reactant is whitened, adding hydrochloric acid to adjust the pH, and filtering, washing and drying to obtain white reduced Schiff base 5-{[(2-hydroxyphenyl)methyl]amino}benzene-1,3-dicarboxylic acid. The method has the advantages of simple process, low cost, good repeatability, high product purity and yield, strong fluorescence and narrow half-peak width.

Description

technical field [0001] The invention relates to an organic material 5-{[(2-hydroxyphenyl)methyl]amino}benzene-1,3-dicarboxylic acid with blue fluorescence and a synthesis method thereof. Background technique [0002] With the increasingly wide application in the fields of display lighting and biomedical fluorescent marking, luminescent materials have an increasingly important impact on people's production and life. However, at present, many luminescent materials, especially blue light materials, have problems such as low luminous efficiency or high cost. For example, despite the high luminous efficiency of noble metal complexes reported in recent years, the production cost is usually high, and the synthesis process is often complicated. Therefore, the development of strong blue light materials with low cost and relatively simple synthesis process is a difficult problem for the related research and popularization and application of advanced display lighting technologies such ...

AI Technical Summary

Problems solved by technology

Both salicylaldehyde and 5-aminoisophthalic acid are fluorescent organic molecules, but their fluorescence efficiency is not high. They are modified by introducing electron-donating groups, such as the formation of salicylaldehyde and 5-aminoisophthalic acid. The prototype Schiff base is expected to obtain higher fluorescence efficiency, so it has potential application prospects in fields such as OLED and biomedicine

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