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RESEARCH PRODUCT

A Supramolecularly-Caged Ionic Iridium(III) Complex Yielding Bright and Very Stable Solid-State Light-Emitting Electrochemical Cells

Enrique OrtíCatherine E. HousecroftHenk J. BolinkStefan GraberDiego RepettoMarkus NeuburgerEdwin C. ConstableKevin DoyleRubén D. Costa

subject

Analytical chemistrySolid-statechemistry.chemical_elementIonic bondingGeneral ChemistryPhotochemistryBiochemistryLuminanceCatalysisElectrochemical cellColloid and Surface ChemistrychemistryIntramolecular forceIridium

description

A new iridium(III) complex showing intramolecular interligand pi-stacking has been synthesized and used to improve the stability of single-component, solid-state light-emitting electrochemical cell (LEC) devices. The pi-stacking results in the formation of a very stable supramolecularly caged complex. LECs using this complex show extraordinary stabilities (estimated lifetime of 600 h) and luminance values (average luminance of 230 cd m-2) indicating the path toward stable ionic complexes for use in LECs reaching stabilities required for practical applications.

https://doi.org/10.1021/ja805900e