The development of artificial photosynthetic systems capable of capturing light energy and storing it in the chemical bonds of molecules that can later be used as fuels represents an important strategy to facilitate a transition away from fossil fuel-based sources of energy. The success of such a system requires an efficient light harvesting component with excited state properties conducive to forward electron transfer to a multi-electron redox catalyst while unproductive back electron transfer must be minimized. Additionally, the ideal system would utilize only earth abundant, non-precious metal-based materials. This talk will summarize our efforts to combine heteroleptic Cu(I)bis(phenanthroline) complexes with photophysical properties that can be adjusted via ligand modification and Co(II) complexes with tetrapyridyl ligands that facilitate both proton and electron transfer to the metal center into supramolecular assemblies for photocatalytic hydrogen production. Modifications to the structures of the chromophore and catalyst subcomponents, which translate into differences in the self-assembly of the supramolecular system, and the resulting effects on the efficiency of photoinduced electron transfer and proton reduction activity will be discussed.

Supramolecular assemblies of Cu(I) photosensitizers and Co(II) hydrogen evolving catalysts for photocatalytic hydrogen production

2019 Fall National Meeting

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