Synthesis of Hexa-arylamine Substituted Triphenylene Containing Hexane-1,6-dioxa Bridge in between and Hyperbranched Triphenylamine-based Polymer, and The Application as Hole-Injection and Transport Layer on PLED
Date Issued
2007
Date
2007
Author(s)
Chien, Ying-Hsueh Chang
DOI
zh-TW
Abstract
The studies of charge injection, transport, recombination, and light emission process in organic semiconductor materials have drown a lot attention. In this paper, we planed to synthesize the hole-transfer material in organic light emitting diode (OLED). Because of owning the property of π-π stacking and electron-rich, we employ the aromatic ring which usually used as the cores of discotic liquid crystals. We choose the triphenylamine and carbazole derivatives as the end group, which would electropolymerize in low oxidation electric potential to form hole-transport film.
We synthesize a series of star-burst compounds using triphenylene as the core, alkyl chain as the linker to connect the core with the triphenylamine / carbazole derivatives. The electrochemical properties of those star-burst compounds were studied by cyclic voltammetry. Then we fabricate OLED device by employing those electropolymeric film as the hole-transport layer, and all the devices show well-performance.
We develop a new triphenylamine-based hyperbranched oligomer which synthesized through self-condensation of 4-(4-(diphenylamino)- benzyloxy)butyl 4-methylbenzenesulfonate. The hyperbranched oligomer could electropolymerized, and the electropolymeric film as the modification layer in OLED device shows good hole-transport and injection properties.
Subjects
三伸苯
三苯胺
聚合物
自縮合反應
有機光電材料
triphenylene
triphenylamine
polymer
self-condensation
OLED
Type
thesis
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