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Microscopic and spectroscopic study of self-ordering in poly(3-hexylthlophene)/carbon nanotubes nanocomposites

被引：5
作者：
Goh, Roland G. S.
Bell, John M.
Motta, Nunzio
Waclawik, Eric R.
机构：
[1] Queensland Univ Technol, Ctr Built Environm & Engn Res, Brisbane, Qld 400, Australia
[2] Queensland Univ Technol, Sch Phys & Chem Sci, Brisbane, Qld 400, Australia
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2006年 / 6卷 / 12期
关键词：
single-wall carbon nanotubes; regioregular poly(3-hexyl thiophene); self-assembly; STM; TEM; nanocomposites; polymer wrapping;
D O I：
10.1166/jnn.2006.678
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Poly(3-hexylthiophene)-single-walled carbon nanotubes (SWNTs) composites were studied using UV-visible absorbance and Raman spectroscopy, scanning tunneling microscopy (STM) and transmission electron microscopy (TEM). Monolayers of regioregular poly(3-hexyl thiophene) (rrP3HT) adsorbed on SWNTs have been imaged using scanning tunneling microscopy (STM) to obtain measurements of the chiral angles at which the thiophene polymer chains wrap around individual carbon nanotubes (41-48 degrees with respect to nanotube axis) and polymer interchain spacings (1.68 angstrom). The rrP3HT interchain distance is greater for rrP3HT monolayers adsorbed onto the curved surfaces of SWNTs than on the flat surfaces of highly ordered pyrolytic graphite samples (1.4 angstrom). UV-vis spectroscopic data provided strong evidence for increased interchain interactions in composites of rrP3HT and SWNTs compared to the pure polymer. The STM local-probe studies of the native polymer and the composites further confirmed that the rrP3HT interacts with carbon nanotubes to produce a highly ordered material at the molecular level.
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收藏
页码：3929 / 3933
页数：5
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