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Polymerization of a biscalix[5]arene derivative
Takehiro Hirao1, Kazushi Fukuta2, Takeharu Haino1
1Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan haino@hiroshima-u.ac.jp.
RSC Advances
|April 28, 2022
Summary
Researchers developed a new method to create host-appended polymers by directly polymerizing host-appended monomers. This approach enables diverse polymer synthesis and maintains host-guest complexation capabilities, even in long polymer chains.
Area of Science:
- Polymer Chemistry
- Supramolecular Chemistry
Background:
- Polymers with host or guest moieties are crucial for advanced materials like self-healable and stimuli-responsive polymers.
- Current methods often involve attaching these moieties to pre-formed polymers, limiting diversity.
- Direct polymerization of functionalized monomers is challenging due to reactive moiety interference.
Purpose of the Study:
- To demonstrate a novel method for synthesizing host-appended polymers via direct monomer polymerization.
- To investigate the host-guest complexation properties of the resulting polymers.
- To explore the potential for creating diverse polymer architectures with appended host functionalities.
Main Methods:
- Polymerization of a biscalix[5]arene host-appended molecule with various comonomers.
- Characterization of host-appended polymers using 1H NMR and UV/Vis spectroscopy.
- Evaluation of host-guest complexation between calix[5]arene-appended polymers and fullerene derivatives.
Main Results:
- Successfully synthesized host-appended polymers by polymerizing biscalix[5]arene-appended monomers.
- Demonstrated that the host-guest complexation ability of calix[5]arene moieties is retained in the polymer.
- Confirmed effective complexation even with polymer-functionalized fullerene guests, irrespective of polymer chain length.
Conclusions:
- Direct polymerization of host-appended monomers is a viable strategy for creating functional polymers.
- The resulting polymers maintain significant host-guest complexation capabilities.
- This method offers a versatile platform for designing polymers with tailored supramolecular functionalities and diverse combinations of polymer chains.
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