期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 6, 页码 3171-3177出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja2106652
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资金
- European Community [NMP4-SL-2008-214340]
- Fund of Scientific Research - Flanders (FWO)
- K.U.Leuven (GOA)
- Belgian Federal Science Policy Office [IAP-6/27]
- Institute for the Promotion of Innovation by Science and Technology in Flanders (IWT)
- European Science Foundation
- Netherlands Organization for Scientific Research (NWO)
An achiral oligo(p-phenylene vinylene) derivative with a ureido-triazine hydrogen bonding unit self-assembles into rows of hydrogen bonded dimers at the liquid/solid interface. Scanning tunneling microscopy reveals the formation of chiral domains, but overall, the surface remains racemic. Addition of a chiral auxiliary which is able to interact with the dimers through hydrogen bonding, showed that global organizational chirality could be achieved since a majority of the domains show the same handedness. After removing the chiral auxiliary with a volatile solvent, the global organizational chirality could be trapped, revealing a memory effect. With this straightforward supramolecular approach, we were able to create a chiral surface with preferred handedness composed of achiral molecules at the air/solid interface.
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