The photo-induced electron transfers in the “straight up” ionic assemblies [Pd32+]⋯MCP and [Pd32+]⋯DCP⋯[Pd32+] ([Pd32+]* → MCP or DCP) are ultrafast (<85 fs) indicating that it is not necessary to have a strong coordination bond or a bent geometry to obtain fast electron injection in porphyrin-containing DSSCs.
