ELECTRON-NUCLEAR DOUBLE-RESONANCE OBSERVATION OF PI-ELECTRON DEFECT STATES IN UNDOPED POLY(PARA-PHENYLENE VINYLENE)

被引：89

作者：

KURODA, S ^{[1
]}

NOGUCHI, T ^{[1
]}

OHNISHI, T ^{[1
]}

机构：

[1] SUMITOMO CHEM CO LTD,TSUKUBA RES LAB,TSUKUBA,IBARAKI 30032,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.72.286

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electron nuclear double resonance spectra in stretch-oriented undoped poly(paraphenylene vinylene) films show clear anisotropy of an unpaired pi electron on the polymer chain. The maximum value of the spin density reaches 0.09, which corresponds to the half-width of the spatial extension of the spin over several phenyl rings. Comparison between the dark and photoinduced ESR signals strongly suggests that the observed spins are trapped polarons.

引用

页码：286 / 289

页数：4

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