Adsorption of helical aromatic molecules: heptahelicene on Ni()

Chirality Transfer from Single Molecules into Self‐Assembled Monolayers

“…On Ni(111) and Ni(100), the low mobility of [7]H did not allow the observation of chiral effects. [9] Therefore, we studied the pattern formation on the Cu(111) surface, where at coverages below 95 % of the saturated monolayer the molecules are observed to diffuse readily even at lower temperatures. [10] The absence of close-packed structures up to very-high coverages is not unexpected for [7]H since the molecule has no chemical groups capable of directional intermolecular bonding.…”

Chirality Transfer from Single Molecules into Self‐Assembled Monolayers

“…The self‐assembly of molecules on surfaces, however, is not only governed by the lateral interaction between the molecules, but is also influenced by the molecule–substrate interaction, which, in turn, determines the mobility of the molecular species at a given temperature. On Ni(111) and Ni(100), the low mobility of [7]H did not allow the observation of chiral effects 9. Therefore, we studied the pattern formation on the Cu(111) surface, where at coverages below 95 % of the saturated monolayer the molecules are observed to diffuse readily even at lower temperatures 10.…”

Intermediate structures in two-dimensional molecular self-assembly

“…4(a) top, C 30 H 18 , [7 ] H] on metal surfaces is an exciting chapter of surface chirality. While on nickel surfaces no extended ordering phenomena has been found [24][25][26], a pronounced transfer of chirality into mono-and multilayered structures, manifested by the formation of extended chiral motifs, was observed for the pure enantiomers on Cu(111) [27,28]. Interestingly, mirror domains have been observed for the racemate at the same surface, indicating at a first glance a lateral resolution of the enantiomers [29].…”