Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 3, Pages 1547-1552Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp911287p
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Funding
- Deutsche Forschungsgemeinschaft [KU 1980/1-2]
- European Commission [FP6-015847]
- Czech Science Foundation [203/07/1664]
- Ministry of Education, Youth and Sports of the Czech Republic [LC512, Z4 055 0506]
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Molecular self-assembly is employed for creating unidirectional molecular nanostructures on a truly insulating substrate, namely the (10 (1) over bar4) cleavage plane of calcite. The molecule used is racemic heptahelicene-2-carboxylic acid, which forms structures, well-aligned along the [010] crystallographic direction and stable at room temperature. Precise control of both molecule-substrate and molecule-molecule interaction is required, leading to the formation of such wire-like structures of well-defined width and lengths exceeding 100 nm. This subtle balance is governed by the heptahelicene-2-carboxylic acid used in this study, allowing for both hydrogen bond formation as well pi-pi stacking.
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