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Luminescent lanthanide architectures for applications in optoelectronics

Abstract : Luminescent lanthanide complexes are receiving a large interest for their applications in the field of optoelectronics, as a result of their pure colors and high emission efficiencies. However, the development of new lanthanide chelates for optoelectronic devices has lagged behind that of other applications, and only a limited number of architectures have been tested.

The aim of this work is to access new synthetic possibilities in the area of lanthanide emitters for optoelectronics, by designing specific ligands and studying the properties of their lanthanide complexes, considering their applications for solid state devices.

To achieve this aim, we have designed, synthesized and studied the complexation of lanthanides by a series of ligands based on the terpyridine-, bipyridine- and pyridine-tetrazole motifs, appended with substituents having various electronic effects. The resulting complexes have been characterized by X-ray crystallography, NMR and luminescence studies. The emission efficiencies are very high in some cases, both in the visible and in the NIR region, demonstrating the clear influence of tuning the ligand structure on the photophysical properties of the final lanthanide complexes. Furthermore, we have synthesized, characterized and tested in OLED devices a new class of neutral complexes completed by β-diketonate units.

Finally, in order to explore the sensitization of lanthanide ions by d-metal complexes, we have designed and synthesized, based on our previous studies, a new specific heterometallic architecture containing iridium complexes as lanthanide antennas, and we have investigated by luminescence measurements the energy transfer processes.
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Contributor : Eugen Andreiadis <>
Submitted on : Wednesday, May 13, 2009 - 10:52:49 PM
Last modification on : Tuesday, May 11, 2021 - 11:36:07 AM
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Eugen S. Andreiadis. Luminescent lanthanide architectures for applications in optoelectronics. Chemical Sciences. Université Joseph-Fourier - Grenoble I, 2009. English. ⟨tel-00383968⟩

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