Synthesis And Spectral Study Of Compound Containing Pyridine,Triazole And Triphenylamine

Organic Electroluminscent (OEL) technology has revealed the great potential application in flat panel display, and has attracted much interest all over the world. The development of high efficiency electron transporting materials has attracted more and more attention. As the current situation, Efficient carrier transport material development is also growing attention, the current carrier transport materials research, the hole transport materials developed in the study of electron transport materials go hand in hand. If we want to get a good and efficient material, we must require electron and hole recombination away from the cathode, balance between injection and transfer. In recent years, two-photon materials research and application by the attention of scientists and led to their great interest in the study, while the synthesis of the two-photon absorption contains a new class of fluorescent compounds. In starting from theory and experiment, was found to have high two-photon fluorescence, a large two-photon absorption cross-section of a new class of compounds has become an international research focus.Because of1,3,4-oxadiazole compounds is excellent heat resistance, to prevent oxidation and the better ability of accept electronic, relatively recent years, many of in research. It is mainly the introduction of light-emitting materials, which thereby enhancing the ability to accept electronic promote electronic easily injected into the integrated light-emitting layer and the hole. And1,2,4-triazole is aromatic compounds with electron-rich, is a heterocyclic ring containing five yuan of two conjugated systems, including imidazole N atoms (sp2hybridization) and the amino N atoms (sp3hybrid), is able to demonstrate excellent light-emitting properties of chromophore. This type of light, ability to transport electrons stronger than, oxadiazole, and relatively few studies, this paper containing1,2,4-triazole class of compounds studied. Pyridine ring and the1,2,4-triazole has a similar lack of electrical performance, with1,2,4-triazole units are linked together, it will certainly be able to improve electron transport properties of molecules. General aromatic amines due to its high hole mobility, is particularly common hole transport materials. Pyridine ring, triazole ring and triphenylamine units connected together, the entire molecule both electron and hole transfer two properties, will be able to light the entire electrical properties of molecular change. Based on the above ideas, this design with eight pyridine ring, triazole ring, and three light-emitting aniline compounds. In addition, the authors designed a symmetrical structure with the pyridine ring, oxadiazole ring, and three light-emitting aniline compounds as contrast material.The chemical structure of the oxadiazoles was confirmed by FT-IR,1H NMR, elemental anaysis, MS and fluorescent spectrum. The fluorescence spectra of the target compounds showed that the λem ranged from431nm to450nm, and the maximum λem were in the range of blue, which told that these compounds have good fluorescence with strong fluorescence intensity. In addition to containing nitro compounds6g and6h, other compounds have good fluorescence intensity, up to0.48, indicating that in the field of organic light-emitting material may have a good prospect.