具有可控金属组装功能的新型三芳基胺树枝状大分子作为空穴传输材料。

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

作者信息

Satoh Norifusa, Cho Jun-Sang, Higuchi Masayoshi, Yamamoto Kimihisa

机构信息

Kanagawa Academy of Science & Technology (KAST) and Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan.

出版信息

J Am Chem Soc. 2003 Jul 9;125(27):8104-5. doi: 10.1021/ja034811p.

DOI:10.1021/ja034811p

PMID:12837071

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.

摘要

通过使用TiCl₄脱水反应合成了一系列以三芳基胺为核的苯甲亚胺树枝状聚合物（TPA-DPA）。第四代（G4）TPA-DPA与SnCl₂的络合反应不是随机进行的，而是从G4树枝状聚合物的核逐步到末端亚胺进行的。在四氢呋喃溶液中，TPA-DPA G4的分子尺寸大于DPA G4，并且具有类似于球状蛋白质的刚性球体结构。制备了有机发光二极管（OLED），使用TPA-DPA-金属络合物作为空穴传输材料的器件的电致发光性能通过金属络合作用大幅提高（约20倍）。