Ms. Rebekah A. Wroblewski Profile

Rebekah A. Wroblewski

at Ohio State Univ

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Proceedings Article | 7 March 2022 Presentation + Paper

Excited states of transition metal complexes for medical applications and solar energy conversion

Claudia Turro, Rebekah Wroblewski

Proceedings Volume 11998, 1199806 (2022) https://doi.org/10.1117/12.2613362

KEYWORDS: Absorption, Transition metals, Visible radiation, Solar energy, Oncology, Hydrogen, Cancer, Rhodium

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Dirhodium(II,II) complexes are shown to possess excited states accessible with visible to near-IR light that are able to undergo reactivity for applications ranging from photochemotherapy to solar energy conversion. In particular, cis– [Rh₂(DPhF)₂(bncn)₂]²⁺ (DPhF = N,N'-diphenylformamidinate, bncn = benzocinnoline; 1) is able to act as a single-molecule photocatalyst for the generation of hydrogen from acidic solutions in the presence of a sacrificial electron donor when irradiated with red/near-IR light. The water solubility of 1 led us to investigate its photoreactivity towards DNA. Complex 1 is able to photocleave DNA at pH = 5.3 upon irradiation with visible light, however, no photocleavage is observed at neutral pH. The binding of 1 to DNA was investigated and likely interacts with the polyanionic double helix through multiple modes, including electrostatic interactions, covalent coordination, and/or partial intercalation.

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