Heterobinuclear units (HBNUs) consisting of paired electron deficient and rich metals supported on silica have applications in artificial photosynthesis systems, as their metal-to-metal charge transfer states strongly absorb visible light and produce separated electrons and holes. Materials with zirconium and cobalt are of particular interest as they are also capable of photochemical carbon dioxide reduction. Though the coordination of organic species to HBNUs is important to reactivity, the mode of this coordination has not been previously characterized. Dosing surveys on a variety of mononuclear and heterobinuclear units were conducted with thiocyanate as a probe molecule, and IR spectroscopy was utilized to understand at what concentration the sites become saturated and to which metal the probe coordinates. Additionally, synthesis was performed on glass cover slips, allowing for AFM and EDS imaging. These measurements allow for better understanding of how organic molecules bind to all-inorganic HBNUs.

Coordination of organic probe molecules to all-inorganic light absorbers

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.