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Soft Patch Interface-Oriented Superassembly of Complex Hollow Nanoarchitectures for Smart Dual-Responsive
Miao Yan1, Tianyi Liu1, Xiaofeng Li2
1Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200438, P. R. China.
Journal of the American Chemical Society
|April 12, 2022
Summary
Researchers developed a "soft patch" assembly method for creating complex, hollow nanospacecrafts. This technique allows for precise control over nanoparticle assembly, leading to novel functional nanodevices.
Area of Science:
- Materials Science
- Nanotechnology
- Colloid Science
Background:
- Nanoparticle surface patterning with anisotropic patches is key for materials assembly.
- Conventional patchy colloids typically form high-symmetry structures due to patch-to-patch recognition.
Purpose of the Study:
- To introduce a novel "soft patch" assembly concept for creating highly asymmetrical hollow nanospacecrafts.
- To demonstrate precise control over nanoparticle assembly and the creation of complex hollow nanostructures.
Main Methods:
- Utilizing a "soft patch" strategy for selective and directional fusion of liquid droplets.
- Controlling droplet fusion regions to precisely dictate hollow nanoparticle diameters.
- Varying patch numbers to enable diverse orientations and complex hollow self-assemblies.
- Demonstrating curvature-selective growth on three nonspherical nanoparticles.
Main Results:
- Successfully produced highly asymmetrical hollow nanospacecrafts with controlled diameters.
- Achieved increased complexity in hollow self-assemblies by manipulating patch numbers.
- Demonstrated the versatility of the soft patch strategy on various nanoparticle shapes.
- Engineered Au-core Ag-shell nanorod nanospacecrafts exhibiting dual-mode response (H2O2 and near-infrared light).
- Observed a 208% increase in diffusion coefficient in dual-mode nanospacecrafts compared to existing materials.
Conclusions:
- The "soft patch" concept offers a new paradigm for designing materials self-assembly.
- This method enables the creation of complex hollow colloids and functional nanodevices previously inaccessible.
- The developed nanospacecrafts show promising dual-mode responsive behavior for advanced applications.
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