Primary charge carrier dynamics of water-solubilized CdZnS/ZnS core/shell and CdZnS/ZnS·Pd nanoparticle adducts

- Long living exictons (8 ns) are observed in water-soluble colloidal CdZnS nanoparticles.
- Passivation with ZnS results in longer living excitation (20 ns) in CdZnS/ZnS nanoparticles.
- Rapid (250 ps) exciton quenching is observed due to electron tunneling through the ZnS shell in CdZnS/ZnS·Pd adducts.
- Type-I core/shell architecture allows for the mitigation of photo-oxidation while allowing for efficient direct catalysis.