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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
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Supramolecular copolymerization driven by integrative self-sorting of hydrogen-bonded rosettes
Keisuke Aratsu1, Rika Takeya1, Brian R Pauw2
1Division of Advanced Science and Engineering, Graduate School of Science and Engineering, Chiba University, 1-33 Yayoi-Cho, Inage-Ku, Chiba, 263-8522, Japan.
Nature Communications
|April 3, 2020
Summary
This study demonstrates molecular recognition-controlled assembly and disassembly in artificial supramolecular polymers. Electrostatic interactions guide the formation of complex copolymers from simple monomers, showcasing dynamic self-alteration.
Area of Science:
- Supramolecular Chemistry
- Polymer Science
- Materials Science
Background:
- Natural supramolecular polymers utilize molecular recognition for efficient self-assembly and function.
- Artificial systems can mimic these processes for advanced material design.
Purpose of the Study:
- To demonstrate molecular recognition-controlled kinetic assembly and disassembly in artificial supramolecular polymers.
- To investigate the formation of complex polymer systems using hydrogen-bonded rosettes.
Main Methods:
- Preparation of electron-rich and electron-poor monomers.
- Kinetically controlled coassembly into amorphous coaggregates via temperature control.
- Induction of self-sorting and copolymer formation through electrostatic interactions.
Main Results:
- Kinetically coassembled monomers formed diverse rosette mixtures.
- Electrostatic interactions induced self-sorting and the formation of helicoidal supramolecular copolymers.
- Heating led to entropy-driven randomization of copolymers into amorphous coaggregates.
Conclusions:
- Molecular recognition can control kinetic assembly and disassembly in artificial supramolecular polymers.
- Electrostatic interactions are key to forming ordered copolymers from disordered mixtures.
- These systems exhibit dynamic self-alteration, mimicking natural supramolecular processes.
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