Design,Synthesis and Characterization of New Host Material Based on Coumarin Derivative for Green and Red Phosphorescent OLEDs

doi:10.7517/j.issn.1674-0475.2010.05.383

Imaging Science and Photochemistry ›› 2010, Vol. 28 ›› Issue (5): 383-389.DOI: 10.7517/j.issn.1674-0475.2010.05.383

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Design,Synthesis and Characterization of New Host Material Based on Coumarin Derivative for Green and Red Phosphorescent OLEDs

WANG Jing^1,3, ZHENG Cai-jun^1,3, HUANG Da^1,3, YE Jun^1,3, OU Xue-mei¹, TAO Si-lu², ZHANG Xiao-hong¹, ZHAO Wei-ming⁴

1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
2. School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, P. R. China;
3. Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China;
4. Dongguan Litewell(OLED) Technology Inc., Dongguan 523656, Guangdong, P. R. China

Received:2010-04-28 Revised:2010-05-26 Online:2010-09-23 Published:2010-09-23

Abstract

Abstract: A new coumarin derivative,1,3-bis(7-ethoxy-4-methyl-3-coumarinyl)benzene(mEMCB),was designed and synthesized.mEMCB exhibits higher triplet energy(2.42 eV) than that of the most green and red phosphorescent dopants.Furthermore,mEMCB has good thermal stabilities.The decomposition temperature(T_d) is 361.49 ℃,and the glass transition temperature(T_g) is 79.72 ℃,which is obviously higher than that of popular host material CBP(T_g,62 ℃).The results indicate that mEMCB is a potential host material for green and red phosphorescent OLEDs.

Key words: host material, coumarin derivative, phosphorescent, organic light emitting diodes(OLEDs)

CLC Number:

WANG Jing, ZHENG Cai-jun, HUANG Da, YE Jun, OU Xue-mei, TAO Si-lu, ZHANG Xiao-hong, ZHAO Wei-ming. Design,Synthesis and Characterization of New Host Material Based on Coumarin Derivative for Green and Red Phosphorescent OLEDs[J]. Imaging Science and Photochemistry, 2010, 28(5): 383-389.

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Design,Synthesis and Characterization of New Host Material Based on Coumarin Derivative for Green and Red Phosphorescent OLEDs

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