Visible‐Light‐Driven, Tunable, Photoelectrochemical Performance of a Series of Metal‐Chelate, Dye‐Organized, Crystalline, CdS Nanoclusters

CdS nanoclusters of four different sizes were integrated with ruthenium-complex dyes. The cluster-dye crystalline composites, [Cd(4)(SPh)(10)][Ru(bpy)(3)], [Cd(8)S(SPh)(16)][Ru(bpy)(3)], [Cd(8)S(SPh)(13) ⋅Cl⋅(CH(3)OCS(2))(2)][Ru(phen)(3)], [Cd(17)S(4)(SPh)(28)][Ru(bpy)(3)], and [Cd(32)S(14)(SPh)(40)][Ru(phen)(3)](2) (phen=1,10-phenanthroline and bpy=bipyridine), show intense absorption in the visible-light region. They also exhibit size-dependent photocurrent responses under the illumination of visible light. The photocurrent increases with increased cluster size. The dyes also have significant influence on the photocurrent generation of the composite.