liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Steering On-Surface Self-Assembly of High-Quality Hydrocarbon Networks with Terminal Alkynes
Technische Universität München, Germany.
Technische Universität München, Germany.
Technische Universität München, Germany.
Linköping University, Department of Physics, Chemistry and Biology, Computational Physics. Linköping University, The Institute of Technology.
Show others and affiliations
2013 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 117, no 8, 3987-3995 p.Article in journal (Refereed) Published
Abstract [en]

The two-dimensional (2D) self-assembly of 1,3,5-triethynyl-benzene (TEB) and de novo synthesized 1,3,5-tris-(4-ethynylphenyl)benzene (Ext-TEB) on Ag(111) was investigated by means of scanning tunneling microscopy (STM) under ultrahigh vacuum (UHV) conditions. Both 3-fold symmetric molecules form long-range ordered nanoporous networks featuring organizational chirality, mediated by novel, planar 6-fold cyclic binding motifs. The key interaction for the expression of the motifs is identified as C–H···π bonding. For Ext-TEB, an additional open-porous phase exists with the 3-fold motif. The nature of the underlying noncovalent bonding schemes is thoroughly analyzed by density functional theory (DFT) calculations including van der Waals corrections. The comparison of calculations focusing on isolated 2D molecular sheets and those including the substrate reveals the delicate balance between the attractive molecule–molecule interaction, mediated by both the terminal alkyne and the phenyl groups, and the molecule–substrate interaction responsible for the commensurability and the regularity of the networks. Comparison with bulk structures of similar molecules suggests that these strictly planar cyclic binding motifs appear only in 2D environments.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2013. Vol. 117, no 8, 3987-3995 p.
National Category
Condensed Matter Physics Physical Chemistry
URN: urn:nbn:se:liu:diva-89628DOI: 10.1021/jp310606rISI: 000318211800034OAI: diva2:608546
Available from: 2013-02-28 Created: 2013-02-28 Last updated: 2013-06-11

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Björk, Jonas
By organisation
Computational PhysicsThe Institute of Technology
In the same journal
The Journal of Physical Chemistry C
Condensed Matter PhysicsPhysical Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 65 hits
ReferencesLink to record
Permanent link

Direct link