Coalescence of 3-phenyl-propynenitrile on Cu(111) into interlocking pinwheel chains |
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Authors: | Luo Miaomiao Lu Wenhao Kim Daeho Chu Eric Wyrick Jon Holzke Connor Salib Daniel Cohen Kamelia D Cheng Zhihai Sun Dezheng Zhu Yeming Einstein T L Bartels Ludwig |
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Institution: | Pierce Hall, University of California-Riverside, Riverside, California 92521, USA. |
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Abstract: | 3-phenyl-propynenitrile (PPN) adsorbs on Cu(111) in a hexagonal network of molecular trimers formed through intermolecular interaction of the cyano group of one molecule with the aromatic ring of its neighbor. Heptamers of trimers coalesce into interlocking pinwheel-shaped structures that, by percolating across islands of the original trimer coverage, create the appearance of gear chains. Density functional theory aids in identifying substrate stress associated with the chemisorption of PPN's acetylene group as the cause of this transition. |
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