Synthesis of Well-Defined Polymer Containing Triphenylamine Group by Living Anionic Polymerization and its OLEDs Application
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초록
내용
In this research, A new polymer poly(A), which has triphenylamine group as hole-transporting moiety, was synthesized by living anionic polymerization. The anionic polymerization of (A) was performed in THF at -30 ℃ for 10 min without additives. The well-defined poly(A)s with predictable molecular weight and narrow molecular weight distribution were obtained quantitatively. The anionic reactivity of living (A) was confirmed by block copolymerization with styrene (S) and 2-vinylpyridine (2VP). Their thermal and optical properties were also investigated. And finally, poly(A) was used as hole-transporting material (HTM) in multilayer OLEDs devices. To make multilayer structure, cyclohexanone was used as an orthogonal solvent, in which emitting material (F8BT) can soluble but poly(A) is insoluble. The device performances showed that poly(A) can be a new HTM in OLEDs.