In a Dye Sensitized Photoelectrosynthesis Cell (DSPEC) a chromophore-catalyst assembly is surface-bound and integrated with a high band gap oxide semiconductor for applications in solar water splitting or CO2 reduction to CO, formate, or other carbon-based fuels. The assembly shown in the figure, on transparent conducting oxide/TiO2 core shells, [((PO3H2)2bpy)2Ru(bpy-bimpy)Ru(tpy)(OH2)]4+, has provided a basis for visible water splitting into hydrogen and oxygen. The synthetic chemistry and surface characterization of chromophore-catalyst assemblies has advanced rapidly. Examples will be discussed based on: 1) covalent linking; 2) layer-by-layer assembly; 3) co-loaded surfaces; 4) catalyst overlayers; 5) electro-assembly formation; 6) electro-oligomerization; and 7) oligoprolines.

Molecular assemblies for solar fuel applications in dye sensitized photoelectrosynthesis cells

248th National Meeting (2014)

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