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Cross-Linking Induced Self-Organization of Polymers into Degradable Assemblies
Conghui Yuan1,2, Bihong Hong1,2, Ying Chang1,2
1College of Materials, Xiamen University , Xiamen, Fujian 361005, China.
ACS Applied Materials & Interfaces
|April 8, 2017
Summary
This study introduces a novel cross-linking-induced self-assembly method for creating uniform polymer networks. These stimuli-responsive polymer assemblies demonstrate tunable degradation and controlled release of guest molecules.
Area of Science:
- Polymer Chemistry
- Materials Science
- Nanotechnology
Background:
- Traditional polymer assemblies rely on pre-assembly followed by cross-linking.
- A new approach using cross-linking to induce self-assembly is needed for controlled network formation.
Purpose of the Study:
- To develop a cross-linking-induced self-assembly method for polymer networks.
- To investigate the self-assembly behavior and properties of boronate cross-linked polymer networks in different solvents.
- To evaluate the stimuli-responsive degradation and cell penetration capabilities of the resulting assemblies.
Main Methods:
- Formation of boronate cross-linking sites via condensation of boronic and catechol groups.
- Induction of self-assembly in water (hydrophobic aggregation) and methanol (B-N dative bonds).
- Characterization of assembly morphology, degradation, and cell penetration.
Main Results:
- Uniform polymer networks organized through cross-linking-induced self-assembly.
- Spherical assemblies formed in water via hydrophobic aggregation.
- Bundle-like assemblies formed in methanol driven by B-N dative bonds.
- Demonstrated stimuli-responsive degradation and controllable release of guest molecules.
- Bundle-like assemblies showed superior cell penetration compared to spherical assemblies.
Conclusions:
- Cross-linking-induced self-assembly offers a versatile route to uniform polymer networks.
- Solvent-dependent driving forces lead to distinct assembly morphologies (spherical vs. bundle-like).
- These polymer assemblies exhibit controlled degradation and enhanced cell penetration, suggesting potential applications in drug delivery and nanomedicine.