Photoactive Dendrimer for Water Photoreduction: A Scaffold to Combine Sensitizers and Catalysts.
We report on the synthesis and characterization of platinum nanoparticles (PtNps) inside the cavities of a PAMAM dendrimer decorated with [Ru(bpy)3](2+) units at the periphery. The phosphorescent ruthenium complexes are used as signaling units of the Pt(2+) complexation in the dendritic architecture and as photosensitizer units in the photocatalytic production of H2 from water. This is the first example of water photoreduction in which the catalyst and the sensitizer are anchored on a dendritic molecular scaffold. This study provides a new outlook in the design of new supramolecular systems and materials for developing artificial photosynthesis.
†Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126 Bologna, Italy.
Luca
L
Ravotto
†Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126 Bologna, Italy.|§IMM Bologna, CNR - National Research Council, Via Gobetti 101, 40129 Bologna, Italy.
Raffaello
R
Mazzaro
‡Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Fossato di Mortara 17-19, 44121 Ferrara, Italy.
Mirco
M
Natali
§IMM Bologna, CNR - National Research Council, Via Gobetti 101, 40129 Bologna, Italy.
Luca
L
Ortolani
§IMM Bologna, CNR - National Research Council, Via Gobetti 101, 40129 Bologna, Italy.
Vittorio
V
Morandi
†Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126 Bologna, Italy.
Paola
P
Ceroni
†Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126 Bologna, Italy.
Giacomo
G
Bergamini
artificial photosynthesis; luminescence; platinum nanoparticles; ruthenium; water reduction