Prediction of Excited-State and Polaron Effects in Transient XUV Measurements of α-FeO.

Transient X-ray and extreme ultraviolet (XUV) spectroscopies have become invaluable tools for studying photoexcited dynamics due to their sensitivity to carrier occupations and local chemical or structural changes. One of the most studied materials using transient XUV spectroscopy is α-FeO because of its rich photoexcited dynamics, including small polaron formation. The interpretation of carrier and polaron effects in α-FeO is currently carried out using a semi-empirical method that is not transferrable to most materials.

Structural Mechanism of Regioselectivity in an Unusual Bacterial Acyl-CoA Dehydrogenase.

Terminal alkenes are easily derivatized, making them desirable functional group targets for polyketide synthase (PKS) engineering. However, they are rarely encountered in natural PKS systems. One mechanism for terminal alkene formation in PKSs is through the activity of an acyl-CoA dehydrogenase (ACAD).