330441-57-1Relevant academic research and scientific papers
Self-assembly of a halogenated molecule on oxide-passivated Cu(110)
El Garah, Mohamed,Lipton-Duffin, Josh,Macleod, Jennifer M.,Gutzler, Rico,Palmino, Frank,Luzet, Vincent,Cherioux, Frederic,Rosei, Federico
, p. 1813 - 1817 (2013)
The supramolecular self-assembly of brominated molecules was investigated and compared on Cu(110) and Cu(110)-O(2×1) surfaces under ultrahigh vacuum. By using scanning tunnelling microscopy, we show that brominated molecules form a disordered structure on Cu(110), whereas a well-ordered supramolecular network is observed on the Cu(110)-O(2×1) surface. The different adsorption behaviors of these two surfaces are described in terms of weakened molecule-substrate interactions on Cu(110)-O(2×1) as opposed to bare Cu(110). The effect of oxygen-passivation is to suppress debromination and it can be a convenient approach for investigating other self-assembly processes on copper-based substrates. Passive resistance: The supramolecular self-assembly of halogenated molecules is achieved on an oxide-passivated Cu(110) surface by tuning the molecule-surface interactions. The Cu(110)-O(2×1) oxygen atoms do not undergo Ullmann cross-coupling reactions, although this reaction is catalyzed by a bare Cu surface, instead suppressing molecule-molecule interactions. Copyright
Quinoxaline derivatives, and light emitting element using thereof
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Page/Page column 9, (2008/06/13)
It is an object to provide an organic compound that has a bipolar property and also a light emitting property, and further has heat resistance. A quinoxaline derivative represented by a general formula (1) is provided. In the formula, A represents any one
