Green-emitting PPE-PPV hybrid polymers:: Efficient energy transfer across the m-phenylene bridge

被引：42

作者：

Chu, QH

Pang, Y ^{[1
]}

Ding, LM

Karasz, FE

机构：

[1] Clark Atlanta Univ, Dept Chem, Atlanta, GA 30314 USA

[2] Clark Atlanta Univ, Ctr High Performance Polymers & Composites, Atlanta, GA 30314 USA

[3] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

来源：

MACROMOLECULES | 2003年 / 36卷 / 11期

关键词：

D O I：

10.1021/ma034028h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Novel pi-corjugated polymers (7) consisting of both poly(phenylenevinylene) (PPV) and poly(phenyleneethynylene) (PPE) blocks are synthesized by using a combination of Heck-type coupling and Horner-Wadsworth-Emmons condensation reactions. These polymers have well-defined chemical structure (-Ph-Cequivalent toC-Ph-Cequivalent toC-Ph-C=C-Ph-C=C-)(n), in which phenyl rings are linked alternately at meta and para positions. C-13 NMR spectroscopy further confirms the structural regularity of the polymers. The degree of polymerization (DP) is in the range 27-76. Resulting from efficient energy transfer from PPE block to PPV block, the PPV/PPE hybrid polymer emits light with the same color as poly[(m-phenylenevinylene)-alt-(p-phenylenevinylene)], 1. LED devices of ITO/PPV/7/Ca and ITO/PEDOT/7/Ca configurations have been fabricated, which give green EL emission with external quantum efficiency of 0.15% for the former and 0.32% for the latter.

引用

页码：3848 / 3853

页数：6

共 26 条

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