Synthesis of Supramolecular A8Bn Miktoarm Star Copolymers by Host‐Guest Complexation

Author:

Nitta Natsumi1,Kihara Shin‐ichi2,Haino Takeharu34ORCID

Affiliation:

1. Department of Chemistry Graduate School of Science Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8526 Japan

2. Department of Chemical Engineering Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan

3. Department of Chemistry Graduate School of Advanced Science and Engineering Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8526 Japan

4. International Institute for Sustainability with Knotted Chiral Meta Matter (SKCM2) Hiroshima University 2-313 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan

Abstract

AbstractWe report a new synthetic method to construct supramolecular A8Bn (n=1, 2, 4) miktoarm star copolymers by host‐guest complexation between a resorcinarene‐based coordination capsule possessing eight polystyrene chains and 4,4‐diacetoxybiphenyl guest molecules that retain one, two or four polymethyl acrylate chains. The formation of the supramolecular A8Bn (n=1, 2, 4) miktoarm star copolymers was confirmed by dynamic light scattering (DLS), size‐exclusion chromatography (SEC), and diffusion‐ordered NMR spectroscopy (DOSY). Differential scanning calorimetry (DSC) measurements revealed that the miktoarm copolymers were phase‐separated in the bulk. The micro‐Brownian motion of the A8B4 structure was markedly enhanced in the bulk due to a weak segregation interaction between the immiscible arms.

Funder

Japan Society for the Promotion of Science

Publisher

Wiley

Subject

General Medicine

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