Dendronized polydiacetylenes via photo-polymerization of supramolecular assemblies showing thermally tunable chirality

Yanjun Liu; Yaodong Lin; Yuexin Cao; Aomiao Zhi; Jiabei Chen; Wen Li; Baris Demir; Debra J. Searles; Andrew K. Whittaker; Afang Zhang

doi:10.1039/D1CC05358B

Dendronized polydiacetylenes via photo-polymerization of supramolecular assemblies showing thermally tunable chirality†

Yanjun Liu,‡^a Yaodong Lin,‡^a Yuexin Cao,‡^a Aomiao Zhi,^a Jiabei Chen,^a Wen Li,

*^a Baris Demir,

^b Debra J. Searles,

^bc Andrew K. Whittaker

^bd and Afang Zhang

*^a

Author affiliations

* Corresponding authors

^a International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai 20444, China
E-mail: wli@shu.edu.cn, azhang@shu.edu.cn

^b Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Qld 4072, Australia

^c School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Qld 4072, Australia

^d ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia

Abstract

Transformation of supramolecular chiral assemblies into covalent polymers integrates characteristics of supramolecular chemistry together with covalent entities, leading to fabrication of covalent chiral materials through versatile supramolecular chiral assemblies. Here, we report supramolecular assembly of an amphiphilic dendronized 10,12-pentacosadiynoic amide (PCDA) in aqueous solutions to form twisted ribbons, which were transferred into covalent dendronized polydiacetylenes (PDAs) via photopolymerization. These supramolecular dendronized PCDA and the corresponding covalent dendronized PDAs showed unprecedent thermoresponsive properties. The thermally-induced dehydration and aggregations tuned reversibly their chiralities, which can be visually inspected through colour changes.

This article is part of the themed collection: Host-Guest Chemistry

Chemical Communications

Dendronized polydiacetylenes via photo-polymerization of supramolecular assemblies showing thermally tunable chirality†

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Dendronized polydiacetylenes via photo-polymerization of supramolecular assemblies showing thermally tunable chirality

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