title: Cyclotrimerization-Induced Chiral Supramolecular Structures of 4-Ethynyltriphenylamine on Au(111) Surface.
abstract: Cyclotrimerization-induced chiral supramolecular structures of 4-ethynyltriphenylamine (ETPA) have been synthesized on the Au(111) surface through alkyne-based reactions. Whereas the ETPA molecules adsorbed on the Au(111) surface remain inert and form a close-packed self-assembled structure at room temperature, the combination of scanning tunneling microscopy observations and theoretical calculations unambiguously reveal that the ETPA molecules cyclotrimerize to form new trimer-like species-1,3,5-tris[4-(diphenylamino)phenyl]benzene (TPAPB)-after annealing at 323 K. Further annealing drives these cyclotrimerized TPAPB molecules to form chiral hexagonal supramolecular structures with an extraordinary self-healing ability.
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).|Nanoscience and Nanotechnology Laboratory, Institute for Advanced Study, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
authors.forename: Feifei
authors.initials: F
authors.lastname: Xiang
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.affiliation: Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C (Denmark).
authors.forename: Xin
authors.initials: X
authors.lastname: Song
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
authors.forename: Zhongping
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
authors.forename: Juan
authors.initials: J
authors.lastname: Liu
authors.affiliation: Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C (Denmark). dong@inano.au.dk.
authors.forename: Mingdong
authors.initials: M
authors.lastname: Dong
authors.affiliation: Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China). liwang@ncu.edu.cn.|Nanoscience and Nanotechnology Laboratory, Institute for Advanced Study, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China). liwang@ncu.edu.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
keywords: chirality; cycloaddition; scanning probe microscopy; self-assembly; surface chemistry