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Updated: Jun 29, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
[Synthesis of pyridine-containing diacylhydrazones and study on their spectral properties]
Dong-Feng Li1, Zi-Kai Lu, Min Li
1College of Biotechnology, Changchun University of Technology, Changchun 130012, China.
Abstract:
Organic electroluminscent (OEL) technology has revealed the great potential application in flat panel display, and has attracted much interest all over the world. In order to create more efficient and high performance device, new materials with high electron transporting capability were demanded. Schiff base complexes can be employed as emitting materials to fabricate electroluminescent device. Several pyridine diacylhydrazones compounds were synthesized. The structure of compounds was confirmed by IR, fluorescence spectrum and elementary analysis. The fluorescence spectra showed that these compounds have good fluorescence. The fluorescence emission wavelengths are between 420 and 440 nm, the fluorescence intensity is related to the substituent of the compounds. The substituent of -OH, furan and piperonal donate electrons that lead to the red shift of fluorescence.
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