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Novel triarylamine dendrimers as a hole-transport material with a controlled metal-assembling function.

Abstract
A series of phenylazomethine dendrimers with a triarylamine core (TPA-DPA) were synthesized by dehydration using TiCl4. The complexation of the fourth genereration (G4) TPA-DPA with SnCl2 proceeds in not a random but a stepwise fashion from the core to the terminal imines of the G4 dendrimer. The molecular size of TPA-DPA G4 is larger than that of DPA G4 in THF solution and has a rigid sphere structure like a globular protein. Organic light-emitting diodes (OLEDs) were fabricated, and the EL performances of the devices using the TPA-DPA-metal complexes as the hole-transport materials are drastically increased (ca. 20 times) by metal complexation.
AuthorsNorifusa Satoh, Jun-Sang Cho, Masayoshi Higuchi, Kimihisa Yamamoto
JournalJournal of the American Chemical Society (J Am Chem Soc) Vol. 125 Issue 27 Pg. 8104-5 (Jul 09 2003) ISSN: 0002-7863 [Print] United States
PMID12837071 (Publication Type: Journal Article)

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