NUCLEATION AND GROWTH OF POLY(3-METHYLTHIOPHENE) ON INDIUM TIN OXIDE GLASS BY SCANNING TUNNELING MICROSCOPY

被引：32
作者：
LUKKARI, J [1 ]
ALANKO, M [1 ]
HEIKKILA, L [1 ]
LAIHO, R [1 ]
KANKARE, J [1 ]
机构：
[1] UNIV TURKU,WIHURI PHYS LAB,SF-20500 TURKU 50,FINLAND
来源：
CHEMISTRY OF MATERIALS | 1993年 / 5卷 / 03期
关键词：
D O I：
10.1021/cm00027a010
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：
We report here results of a scanning tunneling microscopy (STM) and photogalvanic study of the nucleation and growth of poly(3-methylthiophene) on indium-tin oxide (ITO) electrodes. ITO itself exhibits an irregular surface structure consisting of grains with dimensions of 0.1-0.3 mum, separated by deep recesses. Polymer growth begins as oligomer islets on top of the grains and proceeds to form a thin film. Several polymeric features, like fibrils and large featureless bundles, can be detected during later stages of polymerization. Finally macroscopic growth centers appear on the surface and their evolution determines the structure of a thick film.
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页码：289 / 296
页数：8
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