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Updated: Apr 6, 2026

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Cyclotrimerization-Induced Chiral Supramolecular Structures of 4-Ethynyltriphenylamine on Au(111) Surface
Feifei Xiang1,2, Yan Lu1, Chao Li1
1Department of Physics, Nanchang University, Xuefu Road 999, Nanchang, 330031 (P.R. China).
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.
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