HomePublications

Carbene metal amide photoemitters: tailoring conformationally flexible amides for full color range emissions including white-emitting OLED

Research output: Contribution to journalArticle

Open Access permissions

Open

Documents

DOI

Authors

  • Alexander Romanov
  • Saul Jones
  • Qinying Gu
  • Patrick Conaghan
  • Bluebell Drummond
  • Jiale Feng
  • Florian Chotard
  • Leonardo Buizza
  • Morgan Foley
  • Mikko Linnolahti
  • Dan Credgington
  • Manfred Bochmann

Organisational units

Abstract

Conformationally flexible "Carbene-Metal-Amide" (CMA) complexes of copper and gold have been developed based on a combination of sterically hindered cyclic (alkyl)(amino)carbene (CAAC) and 6- and 7-ring heterocyclic amide ligands. These complexes show photoemissions across the visible spectrum with PL quantum yields of up to 89% in solution and 83% in host-guest films. Single crystal X-ray diffraction and photoluminescence (PL) studies combined with DFT calculations indicate the important role of ring structure and conformational flexibility of the amide ligands. Time-resolved PL shows efficient delayed emission with sub-microsecond to microsecond excited state lifetimes at room temperature, with radiative rates exceeding 10 6 s -1. Yellow organic light-emitting diodes (OLEDs) based on a 7-ring gold amide were fabricated by thermal vapor deposition, while the sky-blue to warm-white mechanochromic behavior of the gold phenothiazine-5,5-dioxide complex enabled fabrication of the first CMA-based white light-emitting OLED.

Details

Original languageEnglish
Pages (from-to)435-446
Number of pages12
JournalChemical Science
Volume11
Issue number2
Early online date13 Nov 2019
DOIs
Publication statusPublished - 14 Jan 2020
Peer-reviewedYes

Keywords

    Research areas

  • BASIS-SETS, COMPLEXES, CU-I, DESIGN, EMITTERS

Bibliographic note

This journal is © The Royal Society of Chemistry 2020.

Downloads statistics

No data available

View graph of relations

ID: 169750232