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Highly Stable Red-Light-Emitting Electrochemical Cells

Ertl, C. D. and Momblona, C. and Pertegás, A. and Junquera-Hernández, J. M. and La-Placa, M. G. and Prescimone, A. and Ortí, E. and Housecroft, C. E. and Constable, E. C. and Bolink, H. J.. (2017) Highly Stable Red-Light-Emitting Electrochemical Cells. Journal of the American Chemical Society, 139 (8). pp. 3237-3248.

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Official URL: http://edoc.unibas.ch/54560/

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Abstract

The synthesis and characterization of a series of new cyclometalated iridium(III) complexes [Ir(ppy) 2 (N ∧ N)][PF 6 ] in which Hppy = 2-phenylpyridine and N ∧ N is (pyridin-2-yl)benzo[ d ]thiazole ( L1 ), 2-(4-( tert -butyl)pyridin-2-yl)benzo[ d ]thiazole ( L2 ), 2-(6-phenylpyridin-2-yl)benzo[ d ]thiazole ( L3 ), 2-(4-( tert -butyl)-6-phenylpyridin-2-yl)benzo[ d ]thiazole ( L4 ), 2,6-bis(benzo[ d ]thiazol-2-yl)pyridine ( L5 ), 2-(pyridin-2-yl)benzo[ d ]oxazole ( L6 ), or 2,2′-dibenzo[ d ]thiazole ( L7 ) are reported. The single crystal structures of [Ir(ppy) 2 ( L1 )][PF 6 ]·1.5CH 2 Cl 2 , [Ir(ppy) 2 ( L6 )][PF 6 ]·CH 2 Cl 2 , and [Ir(ppy) 2 ( L7 )][PF 6 ] have been determined. The new complexes are efficient red emitters and have been used in the active layers in light-emitting electrochemical cells (LECs). The effects of modifications of the 2-(pyridin-2-yl)benzo[ d ]thiazole ligand on the photoluminescence and LEC performance have been examined. Extremely stable red-emitting LECs are obtained, and when [Ir(ppy) 2 ( L1 )][PF 6 ], [Ir(ppy) 2 ( L2 )][PF 6 ], or [Ir(ppy) 2 ( L3 )][PF 6 ] are used in the active layer, device lifetimes greater than 1000, 6000, and 4000 h, respectively, are observed
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:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Ertl, Cathrin and Prescimone, Alessandro
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:0002-7863
e-ISSN:1520-5126
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:23 Feb 2018 14:35
Deposited On:09 Mar 2017 12:47

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