Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (14): 1454-1460. Previous Articles    

Full Papers

超支化梯型共轭聚合物的合成与表征

吴军玲,武永刚*,巴信武   

  1. (河北大学化学与环境科学学院 保定 071002)
  • 投稿日期:2010-01-13 修回日期:2010-04-08 发布日期:2010-06-03
  • 通讯作者: 武永刚 E-mail:wuyonggang@hbu.edu.cn
  • 基金资助:

    国家自然科学青年基金;教育部博士点新教师基金;河北省教育厅基金

Synthesis and Characterization of Hyperbranched Ladder-type Polymers

WU Jun-Ling, WU Yong-Gang, BA Xin-Wu   

  1. (College of Chemistry and Environmental Science, Hebei University, Baoding 071002)
  • Received:2010-01-13 Revised:2010-04-08 Published:2010-06-03

A series of hyperbranched ladder-type polymers have been prepared through the Pd(0)-catalyzed Suzuki polymerization by "A2B2B3" approach. All the ladder-type polymers show blue light emission. The UV-vis absorption and photoluminescence (PL) spectra of the ladder-type polymers show distinctly blue-shifted according to the increasing of the degrees of branching. Because the hyperbranched structure can suppress interchain aggregationis, smaller red-shifted of the UV-vis absorption and photoluminescence spectra of the ladder-type polymers in film was observed than that in solution. All the hyperbranched ladder-type polymers exhibit excellent thermal stability. The decomposition temperatures of all polymers are above 320 ℃. Neither a glass transition process (Tg) nor other thermal processes is observed from 35 to 300 ℃ in the DSC trace of second heating. Hyperbranched ladder-type conjugated polymers are expected to be good candidation for blue light-emitting materials.

Key words: ladder-type polymers, conjugated polymers, hyperbranched