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Room-Temperature Bicontinuous Cubic Phase Formed by Eutectic Mixtures Showing a Strong Adhesive Property.
Sho Nakamura1, Manami Harayama1, Yohei Miwa2
1Materials Chemistry Course, Department of Materials Science and Processing, Graduate School of Natural Science and Technology, Gifu University, Yanagido, Gifu 501-1193, Japan.
Langmuir : the ACS Journal of Surfaces and Colloids
|March 2, 2026
Summary
Researchers developed a novel bicontinuous cubic liquid crystal (LC) phase eutectic mixture. This material exhibits strong adhesion properties, paving the way for new applications in materials science.
Area of Science:
- Materials Science
- Liquid Crystals
- Supramolecular Chemistry
Background:
- Mixing liquid crystalline (LC) components can yield superior properties.
- However, bicontinuous cubic (Cubbi) LC phases with 3D networks have not been successfully realized through mixing.
Purpose of the Study:
- To create a Cubbi-phase eutectic mixture near room temperature.
- To investigate the impact of molecular structure on phase behavior and properties.
Main Methods:
- Examined binary mixtures of aryloylhydrazine-based compounds.
- Utilized dynamic viscoelastic measurements and adhesion tests.
Main Results:
- A eutectic Cubbi phase mixture was achieved around room temperature using a 2-methyl azo compound.
- The mixture demonstrated a wide temperature range for the Cubbi phase (435 K to below room temperature).
- High storage modulus (2 MPa) and unprecedented adhesion to glass (7 MPa shear stress) were observed.
Conclusions:
- The developed eutectic Cubbi LC mixture exhibits excellent thermal properties and strong adhesion.
- Both fluidic and elastic characteristics of the Ia3̅d Cubbi LC phase are crucial for its adhesive capabilities.
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