Photochemistry of gold nanoparticles functionalized with an iron(ii) terpyridine complex. An integrated visible light photocatalyst for hydrogen generation

Mercedes Alvaro, Carmela Aprile, Belen Ferrer, Francesc Sastre, Hermenegildo García

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

Gold nanoparticles functionalized with iron(ii) terpyridine complexes undergo upon laser flash excitation long-lived charge separation in both conventional organic solvents and ionic liquids. The nature of the transient species depends on the laser excitation wavelength, 308 (Fe(tpyR)23+ and Au-) or 532 nm (solvated e-). No transients in the microsecond timescale are observed in acetonitrile upon excitation of gold nanoparticles lacking iron(ii) terpyridine complexes. The photogeneration of long-lived transients upon irradiation of these functional gold nanoparticles has been applied to develop an integrated (light harvester plus catalyst) visible-light photocatalysts for H2 generation from water that does not need methyl viologen as an electron relay.

langue originaleAnglais
Pages (de - à)7437-7444
Nombre de pages8
journalDalton Transactions
Numéro de publication36
Les DOIs
Etat de la publicationPublié - 2 sept. 2009
Modification externeOui

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