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高等学校化学研究 ›› 2017, Vol. 33 ›› Issue (2): 287-293.doi: 10.1007/s40242-017-6477-3

• Articles • 上一篇    下一篇

Synthesis and Properties of Polymeric Host Materials Constructed by Silane-carbazole Backbone and Electron-affinitive Cyanohexyl Substituent for Blue Phosphorescence Dopant

HU Dehua1, LIU He1, LI Xiaoxiao1, SUN Xiaoyi1, LU Fang2, BAI Qing1, LU Ping1   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China;
    2. Pharmacy Department, Changchun Medical College, Changchun 130031, P. R. China
  • 收稿日期:2016-11-28 修回日期:2016-12-27 出版日期:2017-04-01 发布日期:2017-01-09
  • 通讯作者: LU Ping,E-mail:lup@jlu.edu.cn E-mail:lup@jlu.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.21374038) and the Project of the Jilin Provincial Science and Technology Department, China(No.20160101302JC).

Synthesis and Properties of Polymeric Host Materials Constructed by Silane-carbazole Backbone and Electron-affinitive Cyanohexyl Substituent for Blue Phosphorescence Dopant

HU Dehua1, LIU He1, LI Xiaoxiao1, SUN Xiaoyi1, LU Fang2, BAI Qing1, LU Ping1   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China;
    2. Pharmacy Department, Changchun Medical College, Changchun 130031, P. R. China
  • Received:2016-11-28 Revised:2016-12-27 Online:2017-04-01 Published:2017-01-09
  • Contact: LU Ping,E-mail:lup@jlu.edu.cn E-mail:lup@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21374038) and the Project of the Jilin Provincial Science and Technology Department, China(No.20160101302JC).

摘要:

A series of blue phosphor hosts, using 3,6-linked carbazole with δ-π tetraphenylsilane segment as the main chain and modified by peripheral cyanohexyl group with different ratios, was designed and synthesized. These polymers show good solubility in common organic solvents. They all possess wide bandgap of 3.40 eV, high thermal stabilities and good film forming abilities. The peripheral cyanohexyl substituents have no effect on the polymer backbones but enhance the electron transporting properties of the polymers in devices. Among them, doped devices using poly[(tetraphenylsilicon/9-hexyl-9H-3,6-carbazole)50-co-(tetraphenylsilicon/9-hexanenitrile-9H-3,6-carbazole)]50 (PCNCzSi50) as the host and bis[(4,6-difluorophenyl)pyridinato-N,C2]-(picolinato)iridium(III)(FIrpic) as the guest show the best performance with the maximum current efficiency and power efficiency of 2.00 cd/A and 1.40 lm/W, respectively.

关键词: Cyano group, Host, Phosphorescence, Polymer, Wide bandgap

Abstract:

A series of blue phosphor hosts, using 3,6-linked carbazole with δ-π tetraphenylsilane segment as the main chain and modified by peripheral cyanohexyl group with different ratios, was designed and synthesized. These polymers show good solubility in common organic solvents. They all possess wide bandgap of 3.40 eV, high thermal stabilities and good film forming abilities. The peripheral cyanohexyl substituents have no effect on the polymer backbones but enhance the electron transporting properties of the polymers in devices. Among them, doped devices using poly[(tetraphenylsilicon/9-hexyl-9H-3,6-carbazole)50-co-(tetraphenylsilicon/9-hexanenitrile-9H-3,6-carbazole)]50 (PCNCzSi50) as the host and bis[(4,6-difluorophenyl)pyridinato-N,C2]-(picolinato)iridium(III)(FIrpic) as the guest show the best performance with the maximum current efficiency and power efficiency of 2.00 cd/A and 1.40 lm/W, respectively.

Key words: Cyano group, Host, Phosphorescence, Polymer, Wide bandgap