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Dendritic Iridium(III)-Encapsulated Complexes for Organic Light Emitting Diodes

  • Ho-Jin Son (a1), Won-Sik Han (a2), Kyu-Bum Choi (a3), Dae-Hyun Kim (a4), Jaejung Ko (a5), Seung-Uk Noh (a6), Changhee Lee (a7) and Sang Ook Kang (a8)...

Abstract

The syntxhesis, photo-physics, and electroluminescence of new types of Iridium(III)-encapsulated dendrimers are described. Thus, four different iridium complexes [Ir(III)(C^N)2(LX), Blue-DCBP, Green-DCBP, Yellow-DCBP, and Red-DCBP] with ancillary ligand tethered to the CBP dendritic unit were synthesized and investigated for their photo-physical properties. A large enhancement in electroluminescence performance was observed by using these dendrimers as host/dopant hybrid materials in layered emitting diodes. In particular, host/dopant ratio can be systematically adjusted by varying dendritic generations. These results demonstrate that new Ir(III)-encapsulated dendrimers can be used as potential single-layer materials for organic light emitting diodes. Large difference in the intra-molecular charge transfer phosphorescence quantum yields and electroluminescence effiencies were observed among dendriritic generations.

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[1] (a) Melinger, J. S.; Pan, Y.; Kleiman, V. D.; Peng, Z.; Davis, B. L.; McMorrow, D.; Lu, M. J. Am. Chem. Soc. 2002, 124, 12002. (b) For a review of light-harvesting dendrimers, see: Adronov, A.; Fréchet, J. M. J. J. Chem. Soc. Chem. Commun. 2000, 1701. (c) Devadoss, C.; Bharathi, P.; Moore, J. S. J. Am. Chem. Soc. 1996, 118, 9635.
[2] (a) Guldi, D. M.; Swartz, A.; Luo, C.; Gómez, R.; Segura, J. L.; Martin, N. J. Am. Chem. Soc. 2002, 124, 10875. (b) Segura, J. L.; Gómez, R.; Martin, N.; Luo, C.; Swartz, A.; Guldi, D. M. Chem. Commun. 2001, 707. (c) Avent, A. G.; Birkett, P. R.; Paolucci, F.; Roffia, S.; Taylor, R.; Wachter, N. K. J. Chem. Soc. Perkin Trans. 2 2000, 1409. (d) Swallen, S. F.; Shi, Z.-Y.; Tan, W.; Xu, Z.; Moore, J. S.; Kopelman, R. J. Lumin. 1998, 76–77, 193. (e) Shortreed, M. R.; Swallen, S. F.; Shi, Z.-Y.; Tan, W.; Xu, Z.; Devadoss, C.; Moore, J. S.; Kopelman, R. J. Phys. Chem. B 1997, 101, 6318. (f) Xu, Z.; Moore, J. S. Acta Polym. 1994, 45, 83.
[3] (a) Lupton, J. M.; Samuel, I. D.W.; Frampton, M. J.; R., Beavington; Burn, P. L. Adv. Funct. Mater. 2001, 11, 287. (b) Lupton, J. M.; Hemingway, L. R.; Samuel, I. D.W.; Burn, P. L. J. Mater. Chem. 2000, 10, 867. (c) Halim, M.; Pillow, J. N. G.; Samuel, I. D.W.; Burn, P. L. Adv. Mater. 1999, 11, 371. (d) Halim, M.; Samuel, I. D.W.; Pillow, J. N. G.; Burn, P. L. Synth. Met. 1999, 102, 1113. (e) Wang, P. W.; Liu, Y. J.; Devadoss, C.; Bharathi, P.; Moore, J. S. Adv. Mater. 1996, 8, 237.
[4] (a) Lupton, J. M.; Samuel, I. D. W.; R., Beavington; Burn, P. L.; H, Bässler. Adv. Mater. 2001, 13, 258. (b) Burn, P. L.; Halim, M.; Pillow, J. N. G.; Samuel, I. D. W. SPIE Symposium on Organic Light-Emitting Materials and Devices III, Denver 1999, 3797, 66. (c) Pillow, J. N. G.; Halim, M.; Lupton, J. M.; Burn, P. L.; Samuel, I. D. W. Macromolecules 1999, 32, 5985.
[5] (a) N., Satoh; J.-S., Cho; M., Higuchi; K, Yamamoto. J. Am. Chem. Soc. 2003, 125, 8104. (b) Freeman, A. W.; Koene, S. C.; Malenfant, P. R. L.; Thompson, M. E.; Fréchet, J. M. J. J. Am. Chem. Soc. 2000, 122, 12385.
[6] N., Cumpstey; Bera, R. N.; Burn, P. L.; Samuel, I. D. W.. Macromolecules 2005, 38, 9564.
[7] T., Tsuzuki; N., Shirasawa; T., Suzuki; S, Tokito. Jpn. J. Appl. Phys. 2005, 44, 4151.
[8] P., Furuta; Fréchet, J. M.J. J. Am. Chem. Soc. 2003, 125, 13173.
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