Toward Molecular Nanowires Self-Assembled on an Insulating Substrate: Heptahelicene-2-carboxylic acid on Calcite (10(1)over-bar4)

Autor(en): Rahe, Philipp 
Nimmrich, Markus
Greuling, Andreas
Schuette, Jens
Stara, Irena G.
Rybacek, Jiri
Huerta-Angeles, Gloria
Stary, Ivo
Rohlfing, Michael
Kuehnle, Angelika
Stichwörter: Chemistry; Chemistry, Physical; Materials Science; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; ORIENTATION; PRINCIPLES; Science & Technology - Other Topics; SURFACES
Erscheinungsdatum: 2010
Herausgeber: AMER CHEMICAL SOC
Journal: JOURNAL OF PHYSICAL CHEMISTRY C
Volumen: 114
Ausgabe: 3
Startseite: 1547
Seitenende: 1552
Zusammenfassung: 
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.
ISSN: 19327447
DOI: 10.1021/jp911287p

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