Biphasic Janus particles with nanoscale anisotropy.

Area of Science:

• Nanotechnology
• Materials Science
• Polymer Chemistry

Background:

• Controlled matter distribution ('patchiness') is crucial for anisotropic building blocks in nanotechnology.
• Fabricating building blocks with controllable material distributions is challenging and has been addressed in limited cases.
• Anisotropic particles offer design parameters beyond size and shape for advanced material development.

Purpose of the Study:

• To design and synthesize polymer-based particles with two distinct phases (Janus particles).
• To demonstrate a novel method for creating anisotropic building blocks with controlled material distribution.
• To explore the potential of these particles for applications in drug delivery, molecular imaging, and self-assembly.

Main Methods:

• Simultaneous electrohydrodynamic jetting of parallel polymer solutions under an electrical field.
• Synthesis of biphasic Janus particles with independently controllable phases.
• Characterization using confocal microscopy and transmission electron microscopy to confirm phase loading and modification.

Main Results:

• Successful synthesis of polymer-based Janus particles with two distinct phases.
• Demonstrated independent loading of biomolecules and selective modification of individual phases.
• Confirmed spatial control of matter distribution at the nanoscale.

Conclusions:

• The electrohydrodynamic jetting method provides a reliable route to synthesize anisotropic Janus particles.
• Controlled spatial distribution of matter at small length scales enables access to novel anisotropic materials.
• These nanocolloids hold promise for developing multicomponent carriers for advanced applications like drug delivery and guided self-assembly.