Aggregation-Induced Delayed Fluorescence Based on Donor/Acceptor-Tethered Janus Carborane Triads: Unique Photophysical Properties of Nondoped OLEDs

Ryuhei Furue, Takuro Nishimoto, In Seob Park, Jiyoung Lee, Takuma Yasuda

Research output: Contribution to journalArticlepeer-review

207 Citations (Scopus)

Abstract

Luminescent materials consisting of boron clusters, such as carboranes, have attracted immense interest in recent years. In this study, luminescent organic–inorganic conjugated systems based on o-carboranes directly bonded to electron-donating and electron-accepting π-conjugated units were elaborated as novel optoelectronic materials. These o-carborane derivatives simultaneously possessed aggregation-induced emission (AIE) and thermally activated delayed fluorescence (TADF) capabilities, and showed strong yellow-to-red emissions with high photoluminescence quantum efficiencies of up to 97 % in their aggregated states or in solid neat films. Organic light-emitting diodes utilizing these o-carborane derivatives as a nondoped emission layer exhibited maximum external electroluminescence quantum efficiencies as high as 11 %, originating from TADF.

Original languageEnglish
Pages (from-to)7171-7175
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number25
DOIs
Publication statusPublished - Jun 13 2016

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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