http://repository.iitr.ac.in/handle/123456789/3381
Title: | Hexaphenylphenylene dendronised pyrenylamines for efficient organic light-emitting diodes |
Authors: | Justin Thomas, K. R. Velusamy M. Lin J.T. Chuen C.H. Tao Y.-T. |
Published in: | Journal of Materials Chemistry |
Abstract: | A series of blue-emitting triarylamines containing pyrene and hexaphenylbenzene dendrons were successfully synthesized by employing the Diels-Alder and palladium catalyzed C-N coupling reactions. They display high glass transition temperatures (>140°C) in differential scanning calorimetry and facile reversible oxidation couple in cyclic voltammetry. They are also thermally stable exhibiting decomposition temperature above 385°C. Efficient blue-emitting electroluminescent devices were fabricated using these novel amines as the hole transporting layer and 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBI) as the electron transporting layer. Colour mixing or green emission was observed when tris(8-hydroxyquinoline)aluminium (Alq3) was used as the electron transporting layer. However insertion of a thin layer of TPBI or 1,3,5-tris(4-tert-butylphenyl-1,3,4-oxadiazolyl)benzene (TPOB) in between the HTL and Alq3 layers led to pure blue emission owing to the confinement of recombination inside the HTL layer containing the compounds. © The Royal Society of Chemistry 2005. |
Citation: | Journal of Materials Chemistry (2005), 15(41): 4453-4459 |
URI: | https://doi.org/10.1039/b509325b http://repository.iitr.ac.in/handle/123456789/3381 |
Issue Date: | 2005 |
ISSN: | 9599428 |
Author Scopus IDs: | 57203389297 6603305200 7501725859 6701637461 7402420315 |
Author Affiliations: | Thomas, K.R.J., Institute of Chemistry, Academia Sinica, 115 Taipei, Taiwan Velusamy, M., Institute of Chemistry, Academia Sinica, 115 Taipei, Taiwan Lin, J.T., Institute of Chemistry, Academia Sinica, 115 Taipei, Taiwan, Department of Chemistry, National Central University, 320 Chungli, Taiwan Chuen, C.H., Institute of Chemistry, Academia Sinica, 115 Taipei, Taiwan Tao, Y.-T., Institute of Chemistry, Academia Sinica, 115 Taipei, Taiwan |
Corresponding Author: | Lin, J.T.; Institute of Chemistry, Academia Sinica, 115 Taipei, Taiwan; email: jtlin@chem.sinica.edu.tw |
Appears in Collections: | Journal Publications [CY] |
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