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Royal Society of Chemistry, Chemical Science, 5(6), p. 3248-3261

DOI: 10.1039/c4sc03914a

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Palladium(0) NHC complexes: A new avenue to highly efficient phosphorescence

Journal article published in 2015 by Adam F. Henwood, Mathieu Lesieur, Ashu K. Bansal, Vincent Lemaur, David Beljonne, David G. Thompson, Duncan Graham, Alexandra M. Z. Slawin, Ifor D. W. Samuel ORCID, Catherine S. J. Cazin ORCID, Eli Zysman-Colman ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We report the first examples of highly luminescent di-coordinated Pd(0) complexes. Five complexes of the form [Pd(L)(L[prime or minute])] were synthesized, where L = IPr, SIPr or IPr* NHC ligands and L[prime or minute] = PCy3, or IPr and SIPr NHC ligands. The photophysical properties of these complexes were determined in degassed toluene solution and in the solid state and contrasted to the poorly luminescent reference complex [Pd(IPr)(PPh3)]. Organic light-emitting diodes were successfully fabricated but attained external quantum efficiencies of between 0.3 and 0.7%.