SCANNING TUNNELING MICROSCOPY OF POLYTHIOPHENE, POLY(3-METHYLTHIOPHENE), AND POLY(3-BROMOTHIOPHENE)

被引：41

作者：

CAPLE, G ^{[1
]}

WHEELER, BL ^{[1
]}

SWIFT, R ^{[1
]}

PORTER, TL ^{[1
]}

JEFFERS, S ^{[1
]}

机构：

[1] NO ARIZONA UNIV,DEPT PHYS,FLAGSTAFF,AZ 86001

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 15期

关键词：

D O I：

10.1021/j100378a002

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：

Scanning tunneling microscope (STM) images were obtained from polythiophene, poly(3-methylthiophene), and poly(3-bromothiophene) doped with tetrafluoroborate. Images of polythiophene contained both helical and chainlike structures. The distance between thiophene units was about 4 Å, and imaging may have occurred at the sulfur atoms. The poly(3-methylthiophene) had an ordered zigzag structure in 350-Å2 images, but less regular structure in 30-Å2 images. The poly(3-bromothiophene) surface images gave indications of ridges in 500-Å2 images, but an almost regular dislocation in its linear chains in 20-Å2 images. It would also appear that the sulfur atoms are involved in the tunneling process. © 1990 American Chemical Society.

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页码：5639 / 5641

页数：3

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