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Updated: May 11, 2026
16:24
Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
Hierarchical Mesoscale Trapping Controls Pathway Selection in Supramolecular Polymerization.
Ziyuan Li1, Rongzhou Du2, Yun Huang1
1School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui, P. R. China.
Angewandte Chemie (International Ed. in English)
|May 9, 2026
Summary
Hierarchical mesoscale aggregation controls supramolecular polymerization pathways. Mesoscale clusters trap metastable assemblies, delaying conversion to fibers and enabling pathway switching via temperature.
Area of Science:
- Supramolecular chemistry
- Materials science
- Polymer chemistry
Background:
- Supramolecular polymerization involves competing kinetic and thermodynamic pathways.
- Pathway selection is often linked to molecular packing, but higher-order organization's role is less understood.
Purpose of the Study:
- To investigate how hierarchical mesoscale aggregation influences pathway selection in supramolecular polymerization.
- To explore emergent regulatory mechanisms beyond molecular scale organization.
Main Methods:
- Utilized a donor-acceptor dicyanostilbene derivative.
- Employed time-resolved small-angle X-ray scattering and spectroscopy.
- Analyzed aggregate formation and assembly dynamics under concentrated conditions.
Main Results:
- Identified two primary aggregates that form mesoscale structures.
- Demonstrated that mesoscale clusters transiently trap metastable assemblies.
- Showed that increasing temperature releases assemblies from the mesoscale trap, switching the pathway.
Conclusions:
- Hierarchical mesoscale aggregation acts as a kinetic regulatory mechanism in supramolecular polymerization.
- Mesoscale trapping influences the kinetics of assembly, controlling the final structure.
- This provides a new perspective on controlling supramolecular material formation.
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