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Supramolecular Self‐Assembly Initiated by Solid–Solid Wetting
Author(s) -
Trixler Frank,
Markert Thomas,
Lackinger Markus,
Jamitzky Ferdinand,
Heckl Wolfgang M.
Publication year - 2007
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200700529
Subject(s) - wetting , monolayer , adsorption , solid surface , materials science , solid state , supramolecular chemistry , molecule , self assembly , chemical engineering , nanocrystalline material , graphite , solid hydrogen , nanotechnology , substrate (aquarium) , hydrogen bond , chemical physics , chemistry , hydrogen , organic chemistry , composite material , engineering , oceanography , geology
We present a preparation method for self‐assembled supra‐molecular monolayers of unsubstituted organic semiconductors and pigments on a solid substrate, applicable under ambient conditions. The deposition is based on a solid–solid wetting phenomenon, whereas the subsequent layer growth proceeds according to standard models. Molecular adsorption results from direct contact of the compound in a nanocrystalline state with the solid surface. Based on complementary force field calculations, we propose that molecules disintegrate from the crystalline state and adsorb on the surface because of a gain in binding energy. The preparation method is exemplified by means of a linear hydrogen‐bonded system, namely quinacridone (QAC) on graphite. In addition, the chosen system allows us to actively guide the self‐assembly after deliberate removal of molecules from a predefined area.