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Enhanced Photocurrents Generated by Supramolecular &!hyphen;Relay/CdS-Nanoparticle/ Electron-Donor Structures on Gold Electrodes



Supramolecular assemblies consisting of CdS nanoparticles linked to I3-encapsulated β-cyclodextrin and to π-donor–acceptor complexes reveal the generation of enhanced photocurrents as a result of effective charge separation. The donor–acceptor complexes formed lead to effective trapping of the conduction-band electrons, and to concomitant scavenging of the valence-band holes by I3- encapsulated in the β-cyclodextrin receptor units.

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