Anion-Responsive π-Conjugated Macrocycles That Form Ordered Structures.

Authors :: Horita H
Okano H
Kikkawa Y
Haketa Y
Maeda H
Source :: Chemistry, an Asian journal [Chem Asian J] 2025 Jan 08, pp. e202401461. Date of Electronic Publication: 2025 Jan 08.
Publication Year :: 2025
Publisher :: Ahead of Print
Abstract: In this study, anion-responsive π-conjugated macrocycles were synthesized to demonstrate anion-binding and ion-pairing properties along with the ordered structures. Ion-pairing charge-by-charge assembly of a [1+2]-type complex of a macrocycle as a pseudo π-electronic anion and a countercation was revealed by single-crystal X-ray analysis. Further, two-dimensional (2D) arrays of the macrocycles bearing alkoxy chains, exhibiting anion-driven disordered structures, were constructed on a highly oriented pyrolytic graphite (HOPG) substrate as observed by scanning tunneling microscopy (STM).<br /> (© 2025 The Author(s). Chemistry - An Asian Journal published by Wiley-VCH GmbH.)