Author/Authors :
Wen، نويسنده , , Gui-An and Xin، نويسنده , , Yu and Zhu، نويسنده , , Xing-Rong and Zeng، نويسنده , , Wen-Jing and Zhu، نويسنده , , Rui and Feng، نويسنده , , Jia-Chun and Cao، نويسنده , , Yong and Zhao، نويسنده , , Lei and Wang، نويسنده , , Lian-Hui and Wei، نويسنده , , Wei and Peng، نويسنده , , Bo and Huang، نويسنده , , Wei، نويسنده ,
Abstract :
A series of hyperbranched triazine-containing polyfluorenes were synthesized by an “A2 + A′2 + B3” approach based on Suzuki polycodensation. The polymers showed pure blue emission and the maximum emissions red-shifted in polar solvents and in solid film. By introducing triazine into polyfluorene, the electron injection and transport properties were improved and green emission was suppressed. PLED devices fabricated with the polymers showed reasonably high external quantum efficiencies.
