Year: 2022
Type: article
Abstract: 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 (λirr > 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.
Source: Nature Communications
Institutions: University of Cincinnati, The Ohio State University
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,890
Awards: G1181855182, G2456652341, Control of Excited State Dynamics of Ru(II) Complexes for Dual Activity, G4989152402, DEVELOPMENT OF PANCHROMATIC DIRHODIUM SENSITIZERS AND PHOTOCATALYSTS, Collaborative Research: Photocatalytic Ketyl and Amino Radicals-Initiated C-C Bond Formation via Semiconductor-Based Photocatalysts
OpenAlex ID: W4224981503