The molecular design of new dyes is restricted by two specific requirements that a sensitizer must meet in order to function properly in a DSC: (i) the lowest-unoccupied molecular-orbital (LUMO) energy of the dye must exceed the conduction-band energy of TiO2 to favor unidirectional charge injection into the TiO2. Likewise, the highest-occupied molecular-orbital (HOMO) energy of the dye must be lower than the electrolyte redox energy (Eredox) to successfully regenerate the dye after charge injection. A dye whose electronic structure does not meet these energetic requirements will fail to generate current in a DSC. (ii) The dye must possess an anchoring group that both stabilizes the dye on the TiO2 surface and allows for charge injection. The primal carboxylic acid, –COOH, and cyanoacrylic acid groups are, by far, the two most popular anchors.1