Induction of chirality in an achiral monolayer at the liquid/solid interface by a supramolecular chiral auxiliary |
| |
Authors: | De Cat Inge Guo Zongxia George Subi J Meijer E W Schenning Albertus P H J De Feyter Steven |
| |
Institution: | Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven-University of Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium. |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|