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Copper(I) complexes for sustainable light-emitting electrochemical cells

Costa, Ruben D. and Tordera, Daniel and Orti, Enrique and Bolink, Henk J. and Schoenle, Jonas and Graber, Stefan and Housecroft, Catherine E. and Constable, Edwin C. and Zampese, Jennifer A.. (2011) Copper(I) complexes for sustainable light-emitting electrochemical cells. Journal of Materials Chemistry, 21 (40). pp. 16108-16118.

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Official URL: http://edoc.unibas.ch/dok/A5848949

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Abstract

Four prototype heteroleptic copper(I) complexes [Cu(bpy)(pop)][PF6] (bpy = 2,2`-bipyridine, pop = bis (2-(diphenylphosphino) phenyl) ether), [Cu(phen)(pop)][PF6] (phen = 1,10-phenanthroline), [Cu(bpy) (pdpb)][PF6] (pdpb = 1,2-bis(diphenylphosphino) benzene) and [Cu(phen)(pdpb)][PF6] are presented. The synthesis, X-ray structures, solution and solid-state photophysical studies, and the performance in light-emitting electrochemical cells (LECs) of these complexes are described. Their photophysical properties are interpreted with the help of density functional theory (DFT) calculations. The photophysical studies in solution and in the solid-state indicate that these copper(I) complexes show good luminescent properties which allow them to be used as active materials in electroluminescent devices such as LECs. Additionally, these materials are very attractive since we can take advantage of their low-cost, due to the copper abundance, and their limited environmental damaging effects for producing cheap large-area panels based on the LEC technology for lighting applications. LEC devices were fabricated using the four prototype copper(I) complexes together with an ionic liquid (IL), 1-ethyl-3-methylimidazolium hexafluoridophosphate, at a molar ratio of 1 : 1. They yield devices that are comparable to those obtained for most LEC devices based on ruthenium(II) and iridium(III) complexes. Hence, this work shows that promising electroluminescent devices can be prepared using cheap and environmentally friendly copper(I) complexes.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Constable, Edwin Charles and Housecroft, Catherine Elizabeth
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:0959-9428
e-ISSN:1364-5501
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:10 Apr 2017 14:29
Deposited On:14 Sep 2012 07:01

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