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Science 18 August 2006:
Vol. 313. no. 5789, pp. 961 - 962
DOI: 10.1126/science.1129309
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Reports

A Homomolecular Porous Network at a Cu(111) Surface

Greg Pawin, Kin L. Wong, Ki-Young Kwon, Ludwig Bartels*

Anthraquinone molecules self-assemble on a Cu(111) surface into a large two-dimensional honeycomb network (Formula)R23° with pore diameters of {approx}50 Å. The spontaneous formation of a pattern containing pores roughly five times larger than the size of the constituent molecules is unprecedented. The network originates from a delicate balance between substrate-mediated repulsion and intermolecular attraction involving an unusual chemical motif: hydrogen bonding between a carbonyl oxygen and an aromatic hydrogen atom. Substrate-mediated long-range adsorbate-adsorbate repulsion has been observed on anisotropic surfaces and in the context of the absence of pattern formation. Its applicability for the design of tailored molecular films is explored here.

Pierce Hall, University of California, Riverside, CA 92521, USA.

* To whom correspondence should be addressed. E-mail: ludwig.bartels{at}ucr.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
A Molecule Carrier.
K. L. Wong, G. Pawin, K.-Y. Kwon, X. Lin, T. Jiao, U. Solanki, R. H. J. Fawcett, L. Bartels, S. Stolbov, and T. S. Rahman (2007)
Science 315, 1391-1393
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