Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells

Breivogel A, Park M, Lee D, Klassen S, Kühnle A, Lee C, Char K, Heinze K (2014)
European Journal of Organic Chemistry 2014(2): 288-295.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Light-emitting electrochemical cells (LECs) with a simple device structure were prepared by using heteroleptic bis(tridentate) ruthenium(II) complexes [1](PF6)(2)-[3](PF6)(2) as emitters. The push-pull substitution shifts the emission energy to low energy, into the NIR region. The devices emit deep red light up to a maximum emission wavelength of 755 nm [CIE (International Commission on Illumination) coordinates: x = 0.731, y = 0.269 for [3](PF6)(2)], which, to the best of our knowledge, is the lowest emission energy for LECs containing bis(tridentate) ruthenium(II) complexes. A device structure of ITO/PEDOT:PSS/ruthenium(II) complex/Ag was used, and the thickness of the emitting layer was measured by AFM [ITO: indium tin oxide, PEDOT: poly(3,4-ethylenedioxythiophene), PSS: poly(styrenesulfonate), AFM: atomic force microscopy]. To enhance the external quantum efficiency (EQE), cells were fabricated with and without poly(methyl methacrylate) (PMMA) as additive in the emitting layer.
Erscheinungsjahr
Zeitschriftentitel
European Journal of Organic Chemistry
Band
2014
Zeitschriftennummer
2
Seite
288-295
ISSN
eISSN
PUB-ID

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Breivogel A, Park M, Lee D, et al. Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells. European Journal of Organic Chemistry. 2014;2014(2):288-295.
Breivogel, A., Park, M., Lee, D., Klassen, S., Kühnle, A., Lee, C., Char, K., et al. (2014). Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells. European Journal of Organic Chemistry, 2014(2), 288-295. doi:10.1002/ejic.201301226
Breivogel, A., Park, M., Lee, D., Klassen, S., Kühnle, A., Lee, C., Char, K., and Heinze, K. (2014). Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells. European Journal of Organic Chemistry 2014, 288-295.
Breivogel, A., et al., 2014. Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells. European Journal of Organic Chemistry, 2014(2), p 288-295.
A. Breivogel, et al., “Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells”, European Journal of Organic Chemistry, vol. 2014, 2014, pp. 288-295.
Breivogel, A., Park, M., Lee, D., Klassen, S., Kühnle, A., Lee, C., Char, K., Heinze, K.: Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells. European Journal of Organic Chemistry. 2014, 288-295 (2014).
Breivogel, Aaron, Park, Myeongjin, Lee, Donggu, Klassen, Stefanie, Kühnle, Angelika, Lee, Changhee, Char, Kookheon, and Heinze, Katja. “Push-Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light-Emitting Electrochemical Cells”. European Journal of Organic Chemistry 2014.2 (2014): 288-295.
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