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Red-shifted activity-based sensors for ethylene via direct conjugation of fluorophore to metal–carbene

https://doi.org/10.1039/D3CB00079F

Dacon, Nicholas J.; Wu, Nathan B.; Michel, Brian W. (November 2023, RSC Chemical Biology)

Direction conjugation of a BODIPY fluorophore with the chelating ruthenium ligand result in red-shifted ethylene probes Con-BEP-4 and Con-BEP-5. Synthesis, photophysical properties, and live cell imaging studies are reported.
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Steric modulation of CAACs controls orientation and ethenolysis performance

https://doi.org/10.1016/j.checat.2023.100764

Jensen, Katrina H.; Michel, Brian W. (September 2023, Chem Catalysis)

In this issue of Chem Catalysis, Sytniczuk, Kajetanowicz, and Grela report sterically tuned Cyclic(Alkyl)(Amino)Carbene (CAAC) ligands to protect the requisite Ru-methylidene ([Ru]=CH2) intermediate present during ethenolysis of renewable fatty acid methyl esters (FAME). Surprising structural characteristics of the Ru-CAAC complexes resulted in TON up to 740,000 and sub-ppm catalyst loadings.
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Ligand-Directed Approach to Activity-Based Sensing: Developing Palladacycle Fluorescent Probes That Enable Endogenous Carbon Monoxide Detection

https://doi.org/10.1021/jacs.0c06405

Morstein, Johannes; Höfler, Denis; Ueno, Kohei; Jurss, Jonah W.; Walvoord, Ryan R.; Bruemmer, Kevin J.; Rezgui, Samir P.; Brewer, Thomas F.; Saitoe, Minoru; Michel, Brian W.; et al (September 2020, Journal of the American Chemical Society)
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