Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 8, Issue 2, Pages 326-331Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.6b02680
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Funding
- National Key Research & Development Projects of China [2016YFA0202300]
- National Basic Research Program of China [2013CBA01600]
- National Natural Science Foundation of China [61390501, 61471337, 51325204]
- CAS Hundred Talents Program
- Transregional Collaborative Research Center [TRR 61]
- National Supercomputing Center in Tianjin
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Using atomic bromine and 2,6-diphenylanthracene (DPA), we successfully constructed and characterized the large-area 2D chiral networks on Ag(111) and Cu(111) surfaces by combining molecular beam epitaxy with scanning tunneling microscopy. The Br atoms distribute themselves periodically in the network with the maximum number of -C-H center dot center dot center dot Br hydrogen bonds. Density functional theory calculations demonstrate that the hydrogen bonds contribute to the stability of the Br-organic networks. In addition, by controlling the ratio of bromine atoms to DPA molecules, different patterns of Br-organic networks were obtained on Ag(111) surfaces. Further experiments with 2,6-di(4-cyclohexylphenyl)anthracene on Ag(111) produced analogous atomic bromine guided 2D chiral networks.
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