Synthesis And Characterization Of Pyrazoline Fluorescent Compounds Containing Distyryl

Type of material as a hole-transporting electroluminescent material the other categories light-emitting materials, it is typical for the aromatic amines compounds pyrazoline derivatives such as fluorescent compounds. distyryl compounds belong to electron transport materials. Pyrazoline derivatives with high blue fluorescence, these pyrazoline derivatives of excitation energy very significant and the application level fluorescence brightness. As fluorescent brighteners, fluorescent dye and a basic dye laser emitting material has excellent properties has been widely used in detergents, paper, leather, plastics, coatings and photographic imaging and other fields. The use of electron transport materials and hole transport materials to be characterized by transmission electron and hole transport materials to match the increased EL efficiency, to reach the equilibrium electron and hole injection into most of the new area of research. If the electron and hole injection does not match the time, organic compounds would appear to the barrier itself, and electronic transmission node, which will seriously affect the performance of light-emitting device.The use of electronic transmission type and set type as a hole transport experience to enhance the fluorescence quantum yield principle, experimental type of electronic transmission will have vinyl and hole transport distyryl pyrazoline type derivatives synthesized a new class of organic fluorescent compounds. Pyrazoline ring in a position to connect the electronic transmission-type distyryl vinyl group,3,5-bit position replaced with aryl derivatives, designed and synthesized eight new type of electronic transmission containing vinyl groups distyryl class of pyrazoline fluorescent compounds, respectively, through a series of infrared spectroscopy, HNMR spectroscopy, mass spectrometry, elemental analysis and fluorescence detection of performance measurement and other hand-measured section to confirm the structure of compounds. Experimental results show that the synthesis of compounds with fluorescent properties, and the fluorescence of the ideal, of which the maximum emission wavelength from UV absorption at350nm is about the maximum fluorescence emission wavelength near450nm, can be seen that the synthesis experiments Pyrazoline fluorescent compounds are a class of good blue fluorescent compounds.