Source:http://linkedlifedata.com/resource/pubmed/id/21162519
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4
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| pubmed:dateCreated |
2011-2-9
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| pubmed:abstractText |
A discotic polycyclic aromatic hydrocarbon, hexa-peri-hexabenzocoronene, was oriented by slow cooling from the isotropic phase on a water surface as a film. For melt processing at low temperatures, an HBC derivative with long swallow-tailed alkyl side chains was chosen. The supramolecular organization in the resulting thin layer was investigated by electron microscopy. In high-resolution mode, the structural study showed large domains in which the columnar structures were oriented uniaxially with an edge-on arrangement of the hydrophobic molecules. The length of the stacks exceeded several hundred nanometers without obvious defects. The small-area analysis by TEM allowed the direct visualization of individual packed molecules. Electron diffraction revealed a high in-plane order of the columnar superstructures in which the discs were tilted by ca. 40° with respect to the stacking direction. This is the first example of a discotic system melt processed on the water surface yielding a pronounced order.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Feb
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| pubmed:issn |
1520-5827
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
15
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| pubmed:volume |
27
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
1524-9
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| pubmed:year |
2011
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| pubmed:articleTitle |
Melt processing of hexa-peri-hexabenzocoronene on the water surface.
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| pubmed:affiliation |
Max Planck Institute for Polymer Research, Mainz, Germany.
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| pubmed:publicationType |
Journal Article
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