Supramolecular dye polymers for aggregation-induced photocatalysis.
Marianna Barbieri1, David Cappelletti1, Luca Vaccarin1
1Department of Chemical Sciences, University of Padova, Padova, Italy.
Nature Chemistry
|May 18, 2026
Summary
Aggregation-induced photocatalysis enhances organic chromophore rigidification for efficient solar energy conversion. This strategy stabilizes excited states, enabling light-driven fuel production in water.
Area of Science:
- Materials Science
- Photochemistry
- Supramolecular Chemistry
Background:
- Organic chromophores' excited-state properties are altered by aggregation.
- Crystalline supramolecular polymers are explored for solar energy conversion via charge delocalization or exciton transport.
Purpose of the Study:
- To exploit aggregation for rigidifying organic chromophores and activating photocatalysis.
- To stabilize localized excited states for enhanced photocatalytic activity.
- To investigate aggregation-induced photocatalysis for solar fuel production.
Main Methods:
- Utilized amphiphilic distyrylanthracene derivatives.
- Studied aggregation behavior in aqueous environments.
- Correlated reactivity with local excited-state population and aggregate kinetics.
Main Results:
- Aggregation in water enhanced excited-state availability for light-driven fuel transformations.
- Increased local excited-state population correlated with enhanced reactivity.
- Kinetically trapped aggregates showed maximized photocatalysis, outperforming thermodynamic counterparts.
- Achieved excited-state confinement and reactivity, not charge delocalization.
Conclusions:
- Aggregation-induced photocatalysis is a viable strategy for organic photocatalysts.
- This approach enables photostable, emissive, and functional organic photocatalysts in water.
- Rigidification via aggregation enhances photocatalytic efficiency by stabilizing localized excited states.
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