Synthesis and light-emitting properties of solution-processable oligothiophenes containing triazole moiety

Boeun Kim, Sungkoo Lee, Kyeong K. Lee, Eunhee Lim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The aromatic triazole is an interesting electron-injection/transport chromophore because it possesses high electron affinity and thermal stability. In organic lighting-emitting diodes (OLEDs), highly electron-deficient triazole (Tz) derivates have been demonstrated to have more efficient electron-transport and hole-blocking characteristics and have a higher stability to high current density than the oxadiazole derivates. In this study, we have successfully synthesized a star-shaped soluble oligomer,4-(4-butylphenyl)-3,5-bis(4- (5′-hexyl-2,2′-bithiophen-5-yl)phenyl)-4H-1,2,4-triazole(Tz-2 T-Hex) via Suzuki coupling reaction. The Tz-2T-Hex shows a red-shifted UV-vis absorption spectrum than Tz-Br with a maximum at 380 nm, due to the introduction of two bithiophene units at both ends. As film, Tz-2T-Hex showed the PL maximum at 530 nm. Tz-2T-Hex emitted light of a white color with the CIE coordinates (0.32 and 0.34).

Original languageEnglish
Title of host publicationOptoelectronic Materials
EditorsYuan Ming Huang
PublisherTrans Tech Publications Ltd.
Number of pages4
ISBN (Print)0878492119, 9780878492114
StatePublished - 2011

Publication series

NameMaterials Science Forum
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752


  • 1,2,4-Triazole
  • Organic lighting-emitting diodes


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