Engineering topics
Turro, Claudia
Publications and source records attributed to Turro, Claudia.
Ir(III)-Based Agents for Monitoring the Cytochrome P450 3A4 Active Site Occupancy
Not provided.
2022 Electron Donor-Acceptor Interactions Gordon Research Conference
Final Conference Program & Registration List
Two-photon-absorbing ruthenium complexes enable near infrared light-driven photocatalysis
One-photon-absorbing photosensitizers are commonly used in homogeneous photocatalysis which require the absorption of ultraviolet (UV) /visible light to populate the desired excited states with adequate energy and lifetime. Nevertheless, the limited penetration depth and competing absorption by organic substrates of UV/visible light calls upon exploring the utilization of longer-wavelength irradiation, such as near-infrared light (λ irr > 700 nm). Despite being found applications in photodynamic therapy and bioimaging, two-photon absorption (TPA), the simultaneous absorption of two photons by one molecule, has been rarely explored in homogeneous photocatalysis. Herein, we report a group of ruthenium polypyridyl complexes possessing TPA capability that can drive a variety of organic transformations upon irradiation with 740 nm light. We demonstrate that these TPA ruthenium complexes can operate in an analogous manner as one-photon-absorbing photosensitizers for both energy-transfer and photoredox reactions, as well as function in concert with a transition metal co-catalyst for metallaphotoredox C–C coupling reactions.
Unsymmetrical dirhodium single molecule photocatalysts for H 2 production with low energy light
New axially blocked unsymmetrical dirhodium complexes photocatalyze the production of H 2 under red light irradiation with a turnover number (TON) of 23 ± 3 in the presence of acid and a sacrificial donor. The presence of multiple metal/ligand-to-ligand charge transfer transitions improves their absorption of light into the near-IR.
Dirhodium Complexes as Panchromatic Sensitizers, Electrocatalysts, and Photocatalysts
Not provided.
Dirhodium complexes as electrocatalysts for CO 2 reduction to HCOOH: role of steric hindrance on selectivity
A series of Rh 2 (II,II) complexes were shown to electrocatalytically reduce CO 2 to HCOOH. Electrochemical and spectroelectrochemical studies reveal a correlation between catalytic selectivity and efficiency with the steric bulk at the axial sites afforded by the bridging ligands. Mechanistic studies point to the presence of a Rh 2 (II,I)–H hydride as a key intermediate in the catalytic cycle.