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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

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Published on: August 2, 2012

Supramolecular architectures from bent-core dendritic molecules.

Miguel Cano¹, Antoni Sánchez-Ferrer, José Luis Serrano

¹Instituto de Ciencia de Materiales de Aragón, Departamento de Química Orgánica. Facultad de Ciencias, Universidad de Zaragoza-CSIC, Campus San Francisco. 50009-Zaragoza (Spain).

Angewandte Chemie (International Ed. in English)

|October 18, 2014

Summary

Ionic, bent dendritic molecules self-assemble into diverse nanostructures like rods, spheres, and fibers in water. This controlled bottom-up strategy enables the creation of novel nanostructured materials with tunable properties.

Keywords:

chirality transfer ionic dendrimers liquid crystals self-assembly supramolecular chemistry

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Area of Science:

Supramolecular chemistry
Materials science
Nanotechnology

Background:

Controlling the self-assembly of small molecules into desired architectures is a significant challenge.
Bent-core molecules are known to form mesophases due to their unique packing.

Purpose of the Study:

To investigate the self-assembly behavior of ionic, bent dendritic molecules in water.
To explore the formation of diverse nanostructures from achiral molecules.
To achieve the transfer of molecular chirality to morphological chirality.

Main Methods:

Transmission Electron Microscopy (TEM)
Scanning Electron Microscopy (SEM)
Selected Area Electron Diffraction (SAED)
X-ray Diffraction (XRD)

Main Results:

Achiral bent dendritic molecules self-assembled into various morphologies including rods, spheres, fibers, helical ribbons, and tubules.
Formation of supramolecular gels and discrete objects observed in the presence of a poor solvent.
Demonstrated the transfer of molecular conformational chirality to morphological chirality in the superstructure.

Conclusions:

Ionic, bent dendritic molecules exhibit versatile self-assembly in water, forming a range of nanostructures.
The study highlights the potential for designing functional nanostructured materials via bottom-up self-assembly.
This work opens new avenues for creating complex supramolecular architectures with controlled morphologies.