Emulsion-oriented assembly for Janus double-spherical mesoporous nanoparticles as biological logic gates

Area of Science:

• Nanotechnology
• Materials Science
• Biotechnology

Background:

• Janus nanoparticles are crucial for biological logic systems.
• Conventional Janus nanoparticles struggle to fully replicate biological communication.
• There is a need for advanced nanoparticle designs to mimic complex biological interactions.

Purpose of the Study:

• To fabricate highly uniform Janus double-spherical nanoparticles with distinct mesoporous compartments.
• To demonstrate the capability of these nanoparticles in establishing single-particle-level biological logic gates.
• To explore the potential of dual-mesoporous structures for complex molecular interactions.

Main Methods:

• Utilized an emulsion-oriented assembly approach for nanoparticle fabrication.
• Fabricated Janus nanoparticles composed of mesoporous silica nanoparticle (MSN) and mesoporous polydopamine (mPDA) hemispheres.
• Tuned mesopore sizes in both MSN (~3-25 nm) and mPDA (~5-50 nm) compartments.

Main Results:

• Achieved highly uniform Janus double-spherical MSN&mPDA nanoparticles (~150 nm MSN, ~120 nm mPDA).
• Demonstrated selective guest loading in different compartments due to varying chemical properties and mesopore sizes.
• Successfully established single-particle-level biological logic gates using these nanoparticles.

Conclusions:

• The developed Janus nanoparticles offer enhanced capabilities for mimicking biological communication.
• The dual-mesoporous structure facilitates sequential reactions and matter release within a single nanoparticle.
• These findings pave the way for sophisticated single-particle-level logic systems in synthetic biology and nanomedicine.