The Synthesis And Study Of A Novel Organic White Light Emitting Polymer Material

Our target is synthesizing a new kind of organic light emitting polymer material which can be used to make single light-emitting layer white OLED. The polymer can be made into a film by the method of solution processing. It has a good prospect in making the low-costing OLED light source.1. A new host material monomer N,N-bis(4-(9H-carbazol-9-yl)phenyl)-3,5-Dibromoaniline was synthesized. The monomer is one kind of triphenylamine with two bromos and two carbazoles. The synthesis route contains the reduction reaction, halogenating reaction and Ullmann reaction.2. Three red, green, blue phosphorescent emitters with bromos and alkyl chain was synthesized. The synthesis route contains the etherification reaction and metal coordination reaction. The fluorescence emission spectrum and UV-Vis absorption spectrum show that three red, green, blue phosphorescent emitters have good optical properties and can be used in OLED.3. The host material monomer and three red, green, blue phosphorescent emitters and a crosslinking monomer were linked together to form a polymer through the Suzuki coupling reaction. However, the reaction failed for many reasons. We tried to find out the reason and gave the solution.