Cross-linkable polymers based on dialkylfluorenes

被引：233

作者：

Klärner, G ^{[1
]}

Lee, JI ^{[1
]}

Lee, VY ^{[1
]}

Chan, E ^{[1
]}

Chen, JP ^{[1
]}

Nelson, A ^{[1
]}

Markiewicz, D ^{[1
]}

Siemens, R ^{[1
]}

Scott, JC ^{[1
]}

Miller, RD ^{[1
]}

机构：

[1] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA

来源：

CHEMISTRY OF MATERIALS | 1999年 / 11卷 / 07期

关键词：

D O I：

10.1021/cm990027l

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have prepared a series of cross-linkable oligo- and poly(dialkylfluorene)s by nickel(0)mediated polymerization of 2,7-dibromo-9,9-dialkylfluorene (alkyl = n-hexyl) and 4-bromo-styrene. The resulting fully soluble and processable, styryl-functionalized oligomers and polymers can be cross-linked via the vinyl end-groups by curing at 175-200 degrees C, consistent with the autopolymerization mechanism of styrene, These relatively mild conditions render the materials insoluble and enable multilayering of polymers in organic light emitting devices. At the same Lime, the electrical and/or optical properties of the cross-linked polymers are preserved and no deleterious species or undesirable byproducts are produced. Furthermore, the cross-linking allows control of the supramolecular ordering of the planarized rigid rod-type fluorene segments in the polymer backbone that leads to suppression of troublesome excimer/aggregate in the photo- and electrolumenescence.

引用

页码：1800 / 1805

页数：6

共 38 条

[1] New triarylamine-containing polymers as hole transport materials in organic light-emitting diodes: Effect of polymer structure and cross-linking on device characteristics [J].