Ion-Pairing Assemblies of Anion-Responsive π-Electronic Systems That Have Noncovalently Assisted Expanded Planar Region. 2024

Rio Kugizaki, and Yohei Haketa, and Kenji Kamada, and Hiromitsu Maeda
Ritsumeikan University, Department of Applied Chemistry, College of Life Sciences, JAPAN.

Arylethynyl-substituted dipyrrolyldiketone BF2 complexes as anion-responsive π-electronic molecules exhibited characteristic electronic properties derived from conformation changes upon anion binding, which caused an increase in UV/vis absorption and associated two-photon absorption.  The anion complexes showed expanded planar regions assisted by intramolecular interactions, resulting in charge-by-charge ion-pairing assemblies in the solid state.

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