Self-Assembly of Hierarchical Structures Using Cyclotriphosphazene-Containing Poly(substituted methylene) Block Copolymers

Fuminobu Kato; Alvin Chandra; Masatoshi Tokita; Hironori Asano; Hiroaki Shimomoto; Eiji Ihara; Teruaki Hayakawa

doi:10.1021/acsmacrolett.7b00789

Self-Assembly of Hierarchical Structures Using Cyclotriphosphazene-Containing Poly(substituted methylene) Block Copolymers

ACS Macro Lett. 2018 Jan 16;7(1):37-41. doi: 10.1021/acsmacrolett.7b00789. Epub 2017 Dec 15.

Authors

Fuminobu Kato¹, Alvin Chandra¹, Masatoshi Tokita¹, Hironori Asano², Hiroaki Shimomoto², Eiji Ihara², Teruaki Hayakawa^{1

3}

Affiliations

¹ Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-S8-36 O-okayama, Meguro-ku, Tokyo 152-0033, Japan.
² Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan.
³ Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.

PMID: 35610935
DOI: 10.1021/acsmacrolett.7b00789

Abstract

The cyclotriphosphazene-substituted diazoacetate homopolymer (polyPNDA') (PNDA' = hexaphenoxy-substituted phosphazene-containing methylene) and a novel poly(substituted methylene) block copolymer, polyPNDA'-block-poly(hexyloxycarbonylmethylene) (polyPNDA'-b-polyHDA'), were synthesized, and the self-assembly behavior of these polymers was studied in detail. A hexagonally packed aggregated structure was observed in the self-assembled structure of polyPNDA', whereas a lamellar structure was observed in the microphase-separated nanoassembly of polyPNDA'-b-polyHDA'. These results indicate that a hierarchical structure composed of highly regular polyPNDA' nanoaggregates and the long-range microphase-separated polyPNDA' and polyHDA' domains had formed.