Towards rainbow photo/electro-luminescence in copper(i) complexes with the versatile bridged bis-pyridyl ancillary ligand

Gilbert Umuhire Mahoro, Elisa Fresta, Margaux Elie, Davide Di Nasso, Qi Zhang, Jean François Lohier, Jean Luc Renaud, Mathieu Linares, Reinhold Wannemacher, Juan Cabanillas-Gonzalez, Rubén D. Costa, Sylvain Gaillard

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The synthesis and characterization of a family of copper(i) complexes bearing a bridged bis-pyridyl ancillary ligand is reported, highlighting how the bridge nature impacts the photo- A nd electro-luminescent behaviours within the family. In particular, the phosphonium bridge led to copper(i) complexes featuring good electrochemical stability and high ionic conductivity, as well as a stark blue-to-orange luminescence shift compared to the others. This resulted in high performance light-emitting electrochemical cells reaching stabilities of 10 mJ at ca. 40 cd m-2 that are one order of magnitude higher than those of the other complexes. Overall, this work sheds light onto the crucial role of the bridge nature of the bis-pyridyl ancillary ligand on the photophysical features, film forming and, in turn, on the final device performances.

Original languageEnglish
Pages (from-to)11049-11060
Number of pages12
JournalDalton Transactions
Volume50
Issue number32
DOIs
StatePublished - 28 Aug 2021

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