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Anisotropic Hexagonal Particles Induced by the Double-Solvent Swelling Method.

Liujun Song¹, Xiaofeng Huang¹, Xiaofei Chen¹

¹School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology , South China University of Technology , Guangzhou 510640 , People's Republic of China.

Langmuir : the ACS Journal of Surfaces and Colloids

|November 9, 2019

Summary

Researchers developed a simple double-solvent method to create hexagonal particles. This technique offers control over particle size and morphology for advanced applications.

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Area of Science:

Materials Science
Nanotechnology
Crystallography

Background:

Nonspherical anisotropic particles are crucial building blocks in materials science.
Traditional methods face challenges in producing precisely shaped nonspherical particles.

Purpose of the Study:

To develop a facile method for fabricating hexagonal particles.
To explore the control over particle morphology and size.
To investigate the potential applications of these novel particles.

Main Methods:

Utilized a double-solvent swelling method involving N,N-dimethylformamide (DMF) and tetraethyl orthosilicate (TEOS).
Immersion of crystal arrays in the solvent system induced swelling and reshaping into hexagonal particles.
Controlled concave size by adjusting solvent mass ratio and swelling time.

Main Results:

Successfully fabricated monodispersed particles with well-defined hexagonal morphology.
Demonstrated control over particle concave size through solvent ratio and swelling duration.
Achieved novel particle morphologies by using arrays with distinct lattice structures.
Observed liquid crystal phenomena in the synthesized particles.

Conclusions:

The double-solvent swelling method provides an effective route to synthesize hexagonal particles.
The method allows for tunable control over particle size and morphology.
These hexagonal particles exhibit promising properties for applications in photonics, optical devices, and toners.