Microstructure of thin films of photoluminescent semiconducting polymers

被引：130

作者：

Yang, CY

Hide, F

Diaz-Garcia, MA

Heeger, AJ ^{[1
]}

Cao, Y

机构：

[1] Univ Calif Santa Barbara, Inst Polymers & Organ Solids, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[5] UNIAX Corp, Santa Barbara, CA 93117 USA

来源：

POLYMER | 1998年 / 39卷 / 11期

基金：

美国国家科学基金会;

关键词：

X-ray diffraction; chain packing and crystal structure; MEH-PPV;

D O I：

10.1016/S0032-3861(97)00509-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The polymer chain distribution in solution-cast thin films of poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) has been investigated by X-ray diffraction. The results show that regardless of the solvent, chain orientation in cast films is anisotropic; the PPV backbones and the planes defined by the benzene rings within the PPV backbones are predominantly parallel to the film plane. When drop-cast from tetrahydrofuran (THF), the preferred solvent for preparation of MEH-PPV films with low threshold in gain narrowing experiments, this anisotropy in chain orientation is more pronounced, and the crystallinity is higher. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：2299 / 2304

页数：6

共 13 条

[1] NOVEL HIGH-EFFICIENCY COPOLYMER LASER-DYE IN THE BLUE WAVELENGTH REGION [J].