Author: Thomas, K.R.J.; Velusamy, M.; Lin, J.T.; Chuen, C.H.; Tao, Y.-T.
Description: 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.
Subject headings:
Publication year: 2005
Journal or book title: Journal of Materials Chemistry
Volume: 15
Issue: 41
Pages: 4453
Find the full text : https://pubs.rsc.org/en/content/articlehtml/2005/jm/b509325b
Find more like this one (cited by): https://scholar.google.com/scholar?cites=17638021863945857355&as_sdt=1000005&sciodt=0,16&hl=en
Type: Journal Article
Serial number: 1826