AI Article Synopsis
- Researchers are focusing on gaining better control over the chirality and structures of polymer assemblies, which is a tough challenge in chemistry and materials science.
- The study demonstrates that altering achiral spacers linked to chiral components allows for controlled chiroptical behaviors in self-assemblies, showing a "two-fold" odd-even effect.
- Various morphologies like micelles, worms, and vesicles also displayed unexpected odd-even correlations, hinting at the significance of minor changes in spacer structures for designing chiral functional polymers.
Article Abstract
Precise 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.
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| http://dx.doi.org/10.1002/anie.202314848 | DOI Listing |
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