A Subtle Change in the Flexible Achiral Spacer Does Matter in Supramolecular Chirality: Two‐Fold Odd‐Even Effect in Polymer Assemblies

Author:

Dai Hongbin1,Hong Ran2,Ma Yafei1,Cheng Xiaoxiao1,Zhang Wei12ORCID

Affiliation:

1. State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

2. School of Chemical and Environmental Engineering Anhui Polytechnic University Wuhu 241000 China

Abstract

AbstractPrecise control over the chirality and morphologies of polymer assemblies, a remaining challenge for both chemists and materials scientists, is receiving ever‐increasing attention in the recent years. Herein, we report the subtle manipulation of the achiral spacers from the chiral stereocenter to the azobenzene (Azo) unit, of which the chiroptical consistency or chiroptical inversion of self‐assemblies could be successfully controlled and present “two‐fold” odd‐even effect. Furthermore, morphological transitions from 0D spherical micelles, 1D worms, and nanowires to 3D vesicles, spindle‐ and dumbbell‐shaped vesicles were also unexpectedly found to exhibit odd‐even correlations. These observations were collectively elucidated by mesomorphic properties, stacking modes, chiroptical dynamics, and stimuli‐responsive behaviors. Negligible modifications to the spacer structures can enable remarkable modulation of supramolecular chirality and anisotropic topologies in polymer assemblies, which is of great significance for the design of complex chiral functional polymers.

Publisher

Wiley

Subject

General Chemistry,Catalysis

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