Chiral structures of lander molecules on Cu(100)

Details Chiral structures of lander molecules on Cu(100) Chiral structures of lander molecules on Cu(100)

2004-02-16

arxiv.org/abs/cond-mat/0402410v1

Physics

Condensed Matter

Other Condensed Matter

to appear in Nanotechnology vol. 15 (2004)

Scientific paper

10.1088/0957-4484/15/6/003

Supramolecular assemblies of lander molecules (C$_{90}$H$_{98}$) on Cu(100) are investigated with low-temperature scanning tunneling microscopy. The energetically most favourable conformation of the adsorbed molecule is found to exist in two mirror symmetric enantiomers or conformers. At low coverage, the molecules align in enantiomerically pure chains along the chiral directions $[01\bar{2}],[02\bar{1}],[012]$ and $[021]$. The arrangement is proposed to be mainly governed by intermolecular van-der-Waals interaction. At higher coverages, the molecular chains arrange into chiral domains, for which a structural model is presented.

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