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Biofunctionalization of Magnetic Nanomaterials
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Function from Confinement: Ligand-Coated Nanoparticles as Functional Materials
Euan R Kay1, Volodymyr Sashuk2, Bartosz A Grzybowski3,4,5
1EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY16 9ST, United Kingdom.
ACS Nano
|December 22, 2025
Summary
Self-assembled monolayers on nanoparticles offer unique functionalities. This review explores their role in catalysis, sensing, and assembly, highlighting design principles for advanced nanomaterials.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Nanoparticles stabilized by self-assembled monolayers (SAMs) possess surface-bound molecular species.
- These organic entities exhibit emergent properties when confined to nanosurfaces, imparting unique functionalities.
Purpose of the Study:
- To review how structural organization and collective interactions in SAMs on nanoparticles lead to specific functions.
- To explore applications in catalysis, sensing, switching, and programmable assembly.
- To identify design principles for hybrid organic-inorganic nanosystems.
Main Methods:
- Review of literature focusing on quasi-spherical nanoparticles (< 8 nm).
- Analysis of SAMs' structural organization and collective interactions.
- Adoption of a systems-chemistry perspective.
Main Results:
- SAMs on nanoparticles enable functions like nanoconfined catalysis, molecular recognition, and programmable assembly.
- Design principles are elucidated for creating functional nanoparticles.
- The organic layer is presented as an active driver of system functionality.
Conclusions:
- Harnessing the dynamic nature of SAMs allows for sophisticated, programmable nanomaterials.
- Opportunities exist in active materials, nanocatalysis, sensing, and delivery.
- A shift in perspective is needed to view SAMs as active functional components.
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