Synthesis and Characterization of New Thienopyrazine-cored Dendrimer for Non-Doped Organic Red Light-Emitting Diodes  

作　　者：李青 李久艳 段永恒 高占先 刘迪 

机构地区：[1]School of Chemistry, Dalian University of Technology, Dalian, Liaoning 116024, China [2]State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116024, China [3]Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shangdong 264003, China

出　　处：《Chinese Journal of Chemistry》2011年第12期2655-2658,共4页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Nos. 20704002, 20923006, 21072026）, the Ministry of Education for the New Century Excellent Talents in University （No. NCET-08-0074）, and the Fundamental Research Funds for the Central Universities （No. DUT 10LK 16）.

摘　　要：A new thieno-[3,4-b]-pyrazine-cored dendrimer with polyphenyls dendrons （D2TP） was designed and synthesized for application as red emitter in non-doped organic light-emitting diodes （OLEDs）. The bulky dendritic arms enable this molecule to possess significant molecular weight and good solubility in common organic solvents. As a result, D2TP is suitable for solution processing methods such as spin coating to make thin films and devices. In addition, these large dendrons provide site-isolation effect on the planar emissive core to prevent fluorescence quenching or intermolecular interaction. The photophysical and electrochemical properties of D2TP were investigated in its dilute solutions. D2TP was used as non-doped emitter to fabricate OLEDs by spin coating method and saturated red electroluminescence was obtained.A new thieno-[3,4-b]-pyrazine-cored dendrimer with polyphenyls dendrons （D2TP） was designed and synthesized for application as red emitter in non-doped organic light-emitting diodes （OLEDs）. The bulky dendritic arms enable this molecule to possess significant molecular weight and good solubility in common organic solvents. As a result, D2TP is suitable for solution processing methods such as spin coating to make thin films and devices. In addition, these large dendrons provide site-isolation effect on the planar emissive core to prevent fluorescence quenching or intermolecular interaction. The photophysical and electrochemical properties of D2TP were investigated in its dilute solutions. D2TP was used as non-doped emitter to fabricate OLEDs by spin coating method and saturated red electroluminescence was obtained.

关 键 词：thienopyrazine DENDRIMER light-emitting diodes red electroluminescence 

分 类 号：O631[理学—高分子化学] TM923.59[理学—化学]