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Updated: Apr 19, 2026

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
Published on: June 20, 2019
Hierarchically porous polymers from hyper-cross-linked block polymer precursors
Myungeun Seo1, Soobin Kim, Jaehoon Oh
1Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Korea.
We developed hierarchically porous polymers (HPPs) with both micropores and continuous mesopores using hyper-cross-linking and block polymer self-assembly. These novel materials show faster adsorption rates than traditional microporous polymers.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Hierarchically porous polymers (HPPs) offer enhanced mass transport properties.
- Designing materials with controlled coexisting micro- and mesoporosity remains a challenge.
Purpose of the Study:
- To synthesize HPPs with tunable hierarchical porosity.
- To investigate the effect of pore structure on adsorption kinetics.
Main Methods:
- Combination of reversible addition-fragmentation chain transfer (RAFT) polymerization and hyper-cross-linking.
- Utilizing block copolymer self-assembly and selective polymer degradation.
- Employing FeCl3 for Friedel-Crafts alkylation to generate micropores.
Main Results:
- Successfully synthesized HPPs featuring interconnected 3D mesopores and generated micropores.
- Achieved precise control over mesopore size (6-15 nm) by adjusting polylactide (PLA) molar mass.
- Demonstrated significantly accelerated adsorption rates in HPPs compared to purely microporous polymers.
Conclusions:
- A novel strategy for creating HPPs with dual porosity was established.
- The developed HPPs exhibit superior adsorption kinetics due to their hierarchical pore structure.
- This work provides a pathway for designing advanced porous materials for various applications.
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