Scale-up chemical synthesis of thermally-activated delayed fluorescence emitters based on the dibenzothiophene-S,S-dioxide core

Oleh Vybornyi, Neil J. Findlay, Peter J. Skabara

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Abstract

We report a procedure to linearly scale-up the synthesis of 2,8-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)dibenzothiophene-S,S-dioxide (compound 4) and 2,8-bis(10H-phenothiazin-10-yl)dibenzothiophene-S,S-dioxide (compound 5) using Buchwald-Hartwig cross-coupling reaction conditions. In addition, we demonstrate a scaled-up synthesis of all non-commercially available starting materials that are required for the amination cross-coupling reaction. In the present article, we provide the detailed synthetic procedures for all of the described compounds, alongside their spectral characterization. This work shows the possibility to produce organic molecules for optoelectronic applications on a large scale, which facilitates their implementation into real world devices.

Original languageEnglish
Article numbere56501
Number of pages5
JournalJournal of Visualized Experiments
Volume2017
Issue number128
DOIs
Publication statusPublished - 24 Oct 2017

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Keywords

  • Buchwald-Hartwig amination
  • chemistry
  • fluorescence
  • Pd cross-coupling
  • OLED
  • synthesis
  • TADF

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