OPTICAL ANISOTROPY AND RAMAN-SCATTERING FROM HIGHLY ORIENTED POLY(OCTYLTHIOPHENE) FILMS

被引：47

作者：

DANNO, T ^{[1
]}

KURTI, J ^{[1
]}

KUZMANY, H ^{[1
]}

机构：

[1] LUDWIG BOLTZMANN INST FESTKORPERPHYS,A-1090 VIENNA,AUSTRIA

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.43.4809

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Unoriented and highly oriented films of poly(octylthiophene) (POT) have been studied by optical-absorption measurements and Raman scattering. Optical absorption was analyzed using a vibronic model improved by the explicit evaluation of transition-matrix elements. The average conjugation length of POT at room temperature was estimated to be four thiophene rings. After stretch orientation, the ordered region in the material and the conjugation length in the ordered region increased. A clear dispersion and a strong anisotropy were observed for the Raman line of the amplitude mode, which is interpreted by the conjugation-length model.

引用

页码：4809 / 4819

页数：11

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