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

Romanov, Alexander, Jones, Saul, Gu, Qinying, Conaghan, Patrick, Drummond, Bluebell, Feng, Jiale, Chotard, Florian, Buizza, Leonardo, Foley, Morgan, Linnolahti, Mikko, Credgington, Dan and Bochmann, Manfred ORCID: https://orcid.org/0000-0001-7736-5428 (2020) Carbene metal amide photoemitters: tailoring conformationally flexible amides for full color range emissions including white-emitting OLED. Chemical Science, 11 (2). pp. 435-446. ISSN 2041-6520

[thumbnail of ChemSci Accepted manuscript]
Preview
PDF (ChemSci Accepted manuscript) - Accepted Version
Available under License Creative Commons Attribution.

Download (2MB) | Preview
[thumbnail of Published_Version]
Preview
PDF (Published_Version) - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview

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.

Item Type: Article
Additional Information: This journal is © The Royal Society of Chemistry 2020.
Uncontrolled Keywords: basis-sets,complexes,cu-i,design,emitters
Faculty \ School: Faculty of Science > School of Chemistry
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 14 Nov 2019 09:30
Last Modified: 24 Sep 2022 05:06
URI: https://ueaeprints.uea.ac.uk/id/eprint/72962
DOI: 10.1039/C9SC04589A

Actions (login required)

View Item View Item