Surface modification, functionalization and bioconjugation of colloidal inorganic nanoparticles

Area of Science:

• Materials Science
• Nanotechnology
• Surface Chemistry

Background:

• Inorganic colloidal nanoparticles exhibit diverse properties (optical, magnetic) based on their core materials.
• Surface functionalization is critical for controlling nanoparticle interactions, stability, and targeted delivery.
• Applications range from electronics and imaging to therapeutics, depending on nanoparticle characteristics.

Purpose of the Study:

• To review various surface modification and functionalization strategies for inorganic colloidal nanoparticles.
• To highlight methods applicable to gold and semiconductor nanoparticles (e.g., CdSe/ZnS).
• To provide insights into generalizable strategies for diverse nanoparticle systems.

Main Methods:

• Literature review of surface modification techniques.
• Analysis of functionalization approaches for gold nanoparticles.
• Examination of strategies for semiconductor quantum dots (e.g., CdSe/ZnS).

Main Results:

• Surface functionalization dictates nanoparticle colloidal stability and environmental interactions.
• Tailored surface chemistry enables controlled assembly and targeted delivery of nanoparticles.
• Diverse functionalization methods exist, adaptable across different inorganic nanoparticle types.

Conclusions:

• Effective surface functionalization is essential for unlocking the full potential of inorganic colloidal nanoparticles.
• Strategies discussed offer a foundation for developing advanced nanomaterials with specific functionalities.
• This review serves as a guide for researchers working with nanoparticle surface modification.