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Issue 8, 2008
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Efficient blue phosphorescent host through nonbonded conformational locking interactions

Jongchul Kwon,a  Tae-Hyuk Kwon,a  Hyo Soon Cho,a  Myoung Ki Kim,a  Ik-Soo Shin,a  Dae-Yup Shin,b  Su Jin Parkb  and  Jong-In Hong*a 
Author affiliations

* Corresponding authors

a Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
E-mail: jihong@snu.ac.kr
Fax: +82-2-889-1568
Tel: +82-02-880-6682

b Corporate R&D Center, Samsung SDI, Yongin 449-902, Korea

Abstract

We developed a new host material TCTEB with a conformationally homogeneous, sterically bulky structure due to nonbonded interactions between adjacent methylene groups. The host presented good thermal stability (Tg = 122 °C and Td = 321 °C) and high triplet energy (3.0 eV). The maximum quantum efficiency, current efficiency and power efficiency of the OLED device using the TCTEB host were 8.5%, 13.7 cd A−1, and 11.3 lm W−1, respectively, when doped with 8 wt% FIrpic.

Graphical abstract: Efficient blue phosphorescent host through nonbonded conformational locking interactions

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Publication details

The article was received on 14 Sep 2007, accepted on 06 Feb 2008 and first published on 13 Mar 2008


Article type: Paper
DOI: 10.1039/B714231E
Citation: New J. Chem., 2008,32, 1368-1372
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    Efficient blue phosphorescent host through nonbonded conformational locking interactions

    J. Kwon, T. Kwon, H. S. Cho, M. K. Kim, I. Shin, D. Shin, S. J. Park and J. Hong, New J. Chem., 2008, 32, 1368
    DOI: 10.1039/B714231E

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