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Updated: Jul 4, 2026

Preparation of Binary and Ternary Deep Eutectic Systems

Preparation of Binary and Ternary Deep Eutectic Systems

Published on: October 31, 2019

Thermodynamical equilibrium of binary supramolecular networks at the liquid-solid interface.

Lorenz Kampschulte¹, Tova L Werblowsky, Ravuri S K Kishore

¹Department for Earth- and Environmental Sciences and Center for NanoScience, Ludwig-Maximilians-University Munich, Theresienstrasse 41, D-80333 Munich, Germany.

Journal of the American Chemical Society

|June 7, 2008

Summary

Researchers explored coadsorption of benzenetribenzoic acid and trimesic acid. They discovered six distinct monolayer phases and observed phase transitions, offering insights into molecular assembly at interfaces.

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Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

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Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

Published on: April 19, 2021

Area of Science:

Surface Chemistry
Supramolecular Chemistry
Materials Science

Background:

Understanding molecular self-assembly at liquid-solid interfaces is crucial for designing advanced materials.
Carboxylic acids are known to form ordered structures via hydrogen bonding.
Investigating coadsorption provides insights into complex interfacial phenomena.

Purpose of the Study:

To study the coadsorption behavior of benzenetribenzoic acid and trimesic acid at the liquid-solid interface.
To characterize the resulting monolayer phases and their structural diversity.
To investigate the influence of solvent and concentration on phase formation and stability.

Main Methods:

Utilized scanning tunneling microscopy (STM) to visualize and analyze the 2D molecular assemblies.
Employed binary solutions of carboxylic acids in heptanoic and nonanoic acid solvents.
Investigated phase transitions induced by in situ dilution.

Main Results:

Identified six distinct, nondensely packed monolayer phases with varying structures and stoichiometries.
Confirmed that intermolecular hydrogen bonding stabilizes all observed structures.
Demonstrated that in situ dilution triggers phase transitions, altering void size and shape within the 2D assembly.

Conclusions:

The coadsorption of benzenetribenzoic acid and trimesic acid leads to a rich variety of interfacial structures.
A simple thermodynamic model can describe the emergence of these different phases.
The findings offer a foundation for controlling molecular assembly through coadsorption and dilution strategies.