Substituent effect to prevent autoxidation and improve spectral stability in blue light-emitting polyfluorenes

被引：49

作者：

Li, AY ^{[1
]}

Ziegler, A ^{[1
]}

Wegner, G ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2005年 / 11卷 / 15期

关键词：

electroluminescence; liquid crystals; luminescence; polymers;

D O I：

10.1002/chem.200401319

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A group of fluorene-based polymers, PF-1SOR and PF-2SOR, were synthesized and characterized as blue light-emitting materials. PF-1SOR and PF-2SOR displayed nematic liquid crystalline mesophase in films cast from solution. Compared with conventional polyfluorene, PF-1SOR and PF-2SOR display blue-shifted UV absorption and structureless blue fluorescence. The photoluminescence spectra of PF-1SOR and PF-2SOR were found insensitive against thermal treatment in air up to 200 degrees C and the blue electroluminescence in their light-emitting devices was independent of the driving voltage. Compared to the conventional polyfluorenes, the improved spectral stability of these polymers is attributed to the anti-oxidization effect of (3,5di(tert-butyl)phenoxy)sulfonyl side groups attached to the backbone.

引用

页码：4450 / 4457

页数：8

共 59 条

[1] High electron mobility in ladder polymer field-effect transistors [J].