Encapsulation of gold nanoclusters: stabilization and more

Area of Science:

• Nanotechnology
• Materials Science
• Biochemistry

Background:

• Gold nanoclusters (AuNCs) are sub-2 nm nanoparticles with unique size-dependent luminescent properties.
• AuNCs exhibit photostability, catalytic activity, low toxicity, and good biocompatibility.
• Their application is limited by poor colloidal stability when using small capping ligands.

Purpose of the Study:

• To review the encapsulation strategies for gold nanoclusters (AuNCs).
• To explore how encapsulation improves AuNC properties and stability.
• To highlight applications of encapsulated AuNCs in bioimaging, sensing, and catalysis.

Main Methods:

• Review of literature on gold nanocluster synthesis and stabilization.
• Analysis of encapsulation techniques using polymers, silica, and metal-organic frameworks (MOFs).
• Evaluation of property enhancement and application potential of encapsulated AuNCs.

Main Results:

• Encapsulation provides robust protection for AuNCs, overcoming limitations of small capping ligands.
• Encapsulated AuNCs demonstrate improved colloidal stability and enhanced properties.
• Successful applications of encapsulated AuNCs are shown in bioimaging, sensing, and catalysis.

Conclusions:

• Encapsulation is a key strategy to enhance the stability and functionality of gold nanoclusters.
• Encapsulated AuNCs are highly promising for advanced applications in medicine and chemistry.
• Further research into encapsulation methods will unlock the full potential of AuNCs.