Spirobi[dibenzo[: B, e] [1,4]azasiline]: A novel platform for host materials in highly efficient organic light-emitting diodes

Xiang Yang Liu, Xun Tang, Yue Zhao, Danli Zhao, Jian Fan, Liang Sheng Liao

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

A novel spiro-type material (5H,5′H-10,10′-spirobi[dibenzo[b,e][1,4]azasiline]-5,5′-diyl)bis((4-methoxyphenyl)-methanone) (SDBSO) was designed and synthesized. The introduction of spirobi[dibenzo[b,e][1,4]azasiline] causes the material to retain high triplet energy (over 3.10 eV). In addition, owing to its highly steric and rigid structure and spiro-linkage, SDBSO exhibited good thermal stability and suitable frontier molecular orbital (FMO) energy levels. The RGB (blue, green, and red) three-color phosphorescent organic light-emitting diodes with SDBSO as the host material were fabricated and maximum external quantum efficiencies of over 20% were achieved for the green and red devices with relatively flat roll-off, indicating its potential utility as a host-building block for highly efficient PHOLEDs.

Original languageEnglish
Pages (from-to)1023-1030
Number of pages8
JournalJournal of Materials Chemistry C
Volume6
Issue number5
DOIs
Publication statusPublished - 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Materials Chemistry

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