化学学报 ›› 2005, Vol. 63 ›› Issue (1): 51-54. 上一篇    下一篇

研究论文

新型含铽共聚物的合成及其电致发光研究

曾礼昌1,杨慕杰*1,吴鹏2,凌启淡1,叶辉2,刘旭2   

  1. (1 浙江大学高分子科学与工程学系 杭州 310027)
    (2 浙江大学现代光学仪器国家重点实验室 杭州 310027)
  • 收稿日期:2003-10-09 修回日期:2003-09-14 出版日期:2005-01-14 发布日期:2010-12-10
  • 通讯作者: 杨慕杰

Synthesis and Electroluminescent Properties of a Novel Tb-containing Copolymer

ZENG Li-Chang1, YANG Mu-Jie*1, WU Peng2, LING Qi-Dan1, YE Hui2, LIU Xu2   

  1. (1 Dempartment of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027)
    (2 State Key Laboratory of Modern Optical Instruments, Zhejiang University, Hangzhou 310027)
  • Received:2003-10-09 Revised:2003-09-14 Online:2005-01-14 Published:2010-12-10
  • Contact: YANG, Mu-Jie

将稀土金属Tb配合物单体与N-乙烯基咔唑(NVK)以及甲基丙烯酸甲酯(MMA)共聚, 合成了一种含Tb配合物的新型聚合物PKMTb, 并以红外光谱、紫外光谱表征了其光谱特性, 研究了其荧光特性和能量转移机制. 利用这种聚合物成功地制成了单层电致发光器件ITO/PKMTb/Al, 其具有半导体二极管的电流-电压特性, 在正相偏压下发绿光, 并探讨了其电致发光机理.

关键词: 铽, 聚合物, 有机电致发光, 能量转移

Tb complex monomer was copolymerized with N-vinylcarbazole (NVK) and methyl methacrylate (MMA) to give a novel Tb-containing copolymer poly(NVK-Tb(MAA)(acac)2Phen-MMA) (PKMTb), which was characterized with IR and UV-vis spectra to give essentially characteristic absorption of polymethylmethacrylate (PMMA) and polyvinylcabazole (PVK). The copolymer PKMTb's photoluminescent properties were investigated and energy transfer from NVK segment to Tb complex in the copolymer chain was observed. However, this energy transfer was much more efficient in thin solid films than in solution. A single layer device of the structure ITO/PKMTb/Al was fabricated by spin coating from the copolymer chloroform solution, and weak green light emission was observed under positive bias above 14.5 V. The current-voltage (I-V) characteristic of the device shows typical semiconductor diode properties. The working mechanism of the device was also discussed.

Key words: Tb, polymer, organic electroluminescence, energy transfer