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Ionic surfactants as assembly crosslinkers triggered supramolecular membrane with 2D↔3D conversion under multiple

Xuejiao Wang¹, Chunlian Yang², Pengbo Song³

¹Fujian Provincial University Engineering Research Center of Industrial Biocatalysis, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China; Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.

Journal of Colloid and Interface Science

|November 30, 2021

Summary

Ionic surfactants transform 3D vesicles into 2D supramolecular membranes, enabling controlled 2D to 3D morphological conversion. These 2D membranes enhance fluorescence and remove water pollutants.

Keywords:

2D supramolecular membrane Crosslinker Molecular packing parameter Solution assembly Stimuli-responsiveness

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Published on: April 8, 2020

Area of Science:

Supramolecular chemistry
Materials science

Background:

Developing diverse and superior supramolecular materials is crucial.
Molecular packing parameters link molecular geometry to aggregate morphology.

Purpose of the Study:

To develop a methodology for creating 2D supramolecular assemblies using ionic surfactants.
To investigate the transformation of 3D vesicles into 2D membranes and their stimulus-responsive properties.

Main Methods:

Introducing ionic surfactants (e.g., sodium dodecylsulfate) to increase the molecular packing parameter (P) in a bolaamphiphile (A2G) system.
Inducing morphological transformation from 3D vesicles to 2D membranes.
Utilizing UV/Vis light, beta-cyclodextrin (β-CD), and alpha-amylase for controlled 2D to 3D morphological conversion.

Main Results:

Successfully transformed 3D vesicles into 2D supramolecular membranes by increasing the molecular packing parameter.
Demonstrated stimulus-responsive behavior with light and enzymes, allowing reversible 2D↔3D morphological changes.
Observed significant fluorescence enhancement for luminescent molecules within the 2D membranes.
Showcased the potential of these 2D membranes for water pollutant removal via filtration.

Conclusions:

A facile strategy for constructing 2D supramolecular membranes using ionic surfactants as crosslinkers was established.
Stimulus-responsive interconversion between 2D and 3D morphologies was achieved, opening new possibilities for dynamic supramolecular materials.