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In this study, a new assembly strategy for lyotropic chromonic liquid crystals (LCLCs) is proposed using iπ–iπ interactions, mainly comprising electrostatic and dispersion forces, between charged π-electronic systems to form stacking structures supported by the hydration of triethylene glycol (TEG) units. Meso-TEG-aryl-substituted porphyrin AuIII complex, an amphiphilic π-electronic cation, showed diverse states and assembly modes in ion pairs depending on the coexisting counteranions. The PCCp– ion pair formed a hexagonal columnar (Colh) LC phase based on a charge-by-charge assembly, suggesting the formation of an ordered arrangement of charged π-electronic systems through iπ–iπ interactions, with reduced interactions between the TEG chains. Furthermore, in the presence of water, LCLC behaviors in the Colh and nematic columnar phases according to the amount of water were observed for the PCCp– ion pair via iπ–iπ interactions. Magnetic-field-induced orientation of the charge-by-charge columnar structures upon dehydration was observed. Furthermore, single-stranded charge-by-charge columnar structures, as components of the LCLCs, were observed using transmission electron microscopy (TEM).

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: amphiphiles, charged pi-electronic systems, ion-pairing assemblies, liquid crystals

Date published: 2025-01-15

Publisher: Wiley

Journal:

• Angewandte Chemie International Edition (ISSN: 14337851) vol. 64 issue. 3

Funding:

• Japan Society for the Promotion of Science JP18H01968, JP22H02067, JP23K23335, JP23K17951, JP20H05863
• Japan Society for the Promotion of Science JP23H04874
• Japan Society for the Promotion of Science JP20J22745

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/anie.202415135

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Updated at: 2025-02-23 22:51:25 +0900

Published on MDR: 2025-02-23 22:51:25 +0900