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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
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Tunable Water-Soluble Supramolecular Polymers by Visible-Light-Regulated Host-Guest Interactions
Ting-Ting Jin1, Xiao-He Zhou1, Yong-Fei Yin1
1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China.
Chemistry, an Asian Journal
|July 6, 2018
Summary
Researchers created light-responsive supramolecular polymers using cucurbit[8]uril (CB[8]) and fluorinated azobenzene (FAB) monomers. Visible light triggers depolymerization, enabling dynamic control over these self-assembling systems in water.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Photochemistry
Background:
- Artificial self-assembling systems with dynamic photo-regulation are crucial for advanced materials.
- Controlling self-assembly in aqueous solutions is challenging but vital for biological applications.
Purpose of the Study:
- To fabricate water-soluble supramolecular polymers with dynamic photo-responsive capabilities.
- To utilize host-enhanced interactions for controlled self-assembly and disassembly.
Main Methods:
- Synthesized monomers containing fluorinated azobenzene (FAB) photochromophores.
- Utilized cucurbit[8]uril (CB[8]) as a host molecule to mediate supramolecular polymerization.
- Employed host-enhanced heteroternary π-π stacking interactions for monomer connection.
- Investigated visible-light-induced E→Z photoisomerization of FAB for depolymerization control.
Main Results:
- Successfully fabricated water-soluble supramolecular polymers mediated by CB[8].
- Demonstrated visible-light-induced depolymerization of the supramolecular polymers.
- Showcased dynamic regulation of encapsulation and assembly through light irradiation.
Conclusions:
- CB[8]-mediated supramolecular polymers with FAB monomers offer a novel platform for photo-responsive materials.
- Visible light provides a non-invasive method to control the assembly and disassembly of these systems in aqueous environments.
- This work opens avenues for fabricating dynamic and responsive biomaterials.
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