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Carbon-carbon main chain polymer with accumulated oligo(ethylene glycol)-substituted cyclotriphosphazenes: Study on the LCST-type phase separation of organic-inorganic poly(substituted methylene)s

Polymer Journal volume 52, pages 51–56 (2020)Cite this article

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Abstract

The synthesis and characterization of organic-inorganic thermoresponsive poly(substituted methylene)s are described. Diazoacetates with oligo(ethylene glycol)-substituted cyclotriphosphazenes were synthesized, and the obtained products were employed as monomers for Pd-initiated polymerization to produce carbon–carbon main chain polymers bearing an oligo(ethylene glycol)-substituted cyclotriphosphazene on every main chain carbon atom. The resulting polymers with densely accumulated oligo(ethylene glycol) units around the polymer main chain showed lower critical solution temperature-type phase separation in an aqueous medium.

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Acknowledgements

This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas “New Polymeric Materials Based on Element-Blocks (No. 2401)” (JSPS KAKENHI Grant Number 15H00755) and “Studying the Function of Soft Molecular Systems by the Concerted Use of Theory and Experiment (No. 2503)” (JSPS KAKENHI Grant Numbers 26104525 and 16H00841), a Grant-in-Aid for Scientific Research (B) (JSPS KAKENHI Grant Number 18H02021), a Grant-in-Aid for Scientific Research (C) (JSPS KAKENHI Grant Numbers 15K05521 and 19K05586), and a Grant-in-Aid for Young Scientists (B) (JSPS KAKENHI Grant Number 16K17916). The authors thank Applied Protein Research Laboratory at Ehime University for its assistance in NMR and Advanced Research Support Center at Ehime University for its assistance in elemental analysis.

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  1. Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, 790-8577, Japan

    Hiroaki Shimomoto, Tomohiro Yamada, Tomomichi Itoh & Eiji Ihara

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  1. Hiroaki Shimomoto
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  2. Tomohiro Yamada
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  3. Tomomichi Itoh
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Correspondence to Eiji Ihara.

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Shimomoto, H., Yamada, T., Itoh, T. et al. Carbon-carbon main chain polymer with accumulated oligo(ethylene glycol)-substituted cyclotriphosphazenes: Study on the LCST-type phase separation of organic-inorganic poly(substituted methylene)s. Polym J 52, 51–56 (2020). https://doi.org/10.1038/s41428-019-0247-7

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