title: Remote chiral communication in coadsorber-induced enantioselective 2D supramolecular assembly at a liquid/solid interface.
abstract: Remote chiral communication in 2D supramolecular assembly at a liquid/solid interface was investigated at the molecular level. The stereochemical information in a chiral coadsorber was transmitted over a flexible spacer with a length of up to five methylene groups to a 2D supramolecular assembly of achiral building blocks with the cooperation of specific hydrogen bonding between the chiral coadsorber and achiral building blocks and the confinement effect during 2D crystallization. When the position of the stereogenic center was changed with respect to the stereocontrolling moiety, an odd-even effect was found. A stereogenic center closer to the stereocontrolling moiety transmitted the stereochemical information to the 2D supramolecular assembly more reliably. This result is beneficial not only for mechanistic understanding of chiral communication in 2D supramolecular assembly on surfaces but also for the rational design of homochiral supramolecular assemblies on surfaces.
authors: Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences, Beijing 100190 (P.R.China).
authors: Ting
authors: T
authors: Chen
authors: Shu-Ying
authors: SY
authors: Li
authors: Dong
authors: D
authors: Wang
authors: Man
authors: M
authors: Yao
authors: Li-Jun
authors: LJ
authors: Wan
mesh_terms: D000327:Adsorption; D015394:Molecular Structure; D013237:Stereoisomerism; D013499:Surface Properties
keywords: chiral communication; interfaces; scanning tunneling microscopy; supramolecular assembly; surface chirality