Multifrequency EPR analysis of the positive polaron in I2-doped poly(3-hexylthiophene) and in poly[2-methoxy-5-(3,7-dimethyloctyloxy)]-1,4-phenylenevinylene

被引：75

作者：

Aguirre, Aranzazu ^{[1
]}

Gast, Peter ^{[2
]}

Orlinskii, Sergey ^{[2
]}

Akimoto, Ikuko ^{[2
]}

Groenen, Edgar J. J. ^{[2
]}

El Mkami, Hassane ^{[3
]}

Goovaerts, Etienne ^{[1
]}

Van Doorslaer, Sabine ^{[1
]}

机构：

[1] Univ Antwerp, Dept Phys, B-2610 Antwerp, Belgium

[2] Leiden Univ, Huygens Lab, MoNOS, NL-2300 RA Leiden, Netherlands

[3] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2008年 / 10卷 / 47期

关键词：

D O I：

10.1039/b811419f

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：

The W-band continuous-wave electron paramagnetic resonance (EPR) analysis of chemically induced polarons in drop-cast and spin-coated polyphenylenevinylene-type and polythiophene-type polymer films reveals rhombic g tensors in both cases. The dependence of the W-band EPR signals on the orientation of the spin-coated films with respect to the magnetic field indicates a high degree of backbone alignment with the substrate and allows a partial assignment of the g tensor orientation. The derived molecular orientations of the polymer chains in the spin-coated films show clear differences between the two types of polymers. The proton hyperfine interactions obtained from X-band HYSCORE (hyperfine sublevel correlation) and Q- and W-band pulsed ENDOR (electron-nuclear double resonance) experiments are interpreted in terms of earlier theoretical studies on the extension of the polarons.

引用

页码：7129 / 7138

页数：10

共 42 条

[1] Matrix line in pulsed electron-nuclear double resonance spectra [J].