Synthesis and Characterization of 1,8-Carbazole-based pi-Conjugated Copolymer with Zigzagged Conformation for Stable Deep-blue Emission

Liu RR; Lin ZQ; Shi NE; Zhao JF; Hou XY; Qian Y; Xie LH; Huang W

Chemistry Letters, Vol.39, No.5, 522-523, 2010

DOI10.1246/cl.2010.522 Export Citation

Synthesis and Characterization of 1,8-Carbazole-based pi-Conjugated Copolymer with Zigzagged Conformation for Stable Deep-blue Emission

Liu RR, Lin ZQ, Shi NE, Zhao JF, Hou XY, Qian Y, Xie LH, Huang W

1,8-Dibromocarbazole was employed to construct zigzagged conformation via the Suzuki-type cross-coupling polycondensation. Model copolymer, poly(Cz1,8-co-F), showed deep-blue 420nm emission in thin film. Air-annealing experiments for 18 h at 200 degrees C with a low green index (IGreen/IBlue) of 0.38 indicated the introduction of nonlinear zigzag-shaped 1,8-dibromocarbazole building blocks into polyfluorene (PF) clearly improved spectral stabilities.