Oxadiazole Derivatives for Emitter and Carrier Transport Materials in Organic Electroluminescent Devices

Chihaya Adachi, Tetsuo Tsutsui, Shogo Saito, Yuji Hamada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Ten oxadiazole derivatives which were newly synthesized were examined as an emitter in organic electroluminescence (EL) cells. The new oxadiazole derivatives exhibited the photolu-minescence (PL) peaks at the wavelength region between 374 and 527 nm. Vacuum-deposited thin films of these compounds had excellent thermal stability, because they have high melting temperature ranging from 240 to 365°C. The organic EL cells with 4, 4,-bis[5-(p-dimethylaminophenyl)-l, 3,4-oxadiazol-2-yl]biphe-nyl, l,3-bis[5-(p-dimethylaminophenyl)-4-oxadiazol-2-yl]benzene and 1,4-bis[5-(p-dime-thylaminophenyl)-l,3, 4-oxadiazol-2-yl]benzene as an emitter showed bright emission whose intensities were 1000~2000 cd/m2. The emission colors were green, blue, and green, respectively. These three oxadiazole derivatives were found to exhibit specific electronic characteristics that they transport both holes and electrons. Utilization of these materials for both emitter and electron transport materials were demonstrated.

Original languageEnglish
Pages (from-to)1540-1548
Number of pages9
JournalNIPPON KAGAKU KAISHI
Volume1991
Issue number11
DOIs
Publication statusPublished - 1991

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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