Hydroquinone redox mediator enhances the photovoltaic performance of chlorophyll-based bio-inspired solar cells
Excited state dynamics of chlorophyll derivatives applied in bio-solar cells are not fully understood. Here, time-resolved absorption study on these derivatives reveal enhanced lifetimes of radical species in the presence of hydroquinone would further enhance the corresponding device performance.
Observing atomic movements of a roaming reaction
Roaming is a reaction mechanism generating molecular products via wondering motions. The atomic movements during the roaming have never been directly observed. Here, we explore the atomic movements of a roaming-mediate isomerization using femtosecond X-ray liquidography.
The Molecules that were Able to Start Translation
The origin of translation is one of the great mysteries of prebiotic evolution. We present an experimental system that shows how the earliest steps could have occurred.
Models underestimate aerosol acidity throughout the atmosphere
Acidity is an important aerosol property, as it impacts numerous physicochemical properties. However, models either neglect to include aerosol acidity, or have not been robustly tested for various environments. We show that the atmosphere is generally acidic, and models miss this important feature.
Structure-function analysis of a new type of endoperoxidase
Endoperoxidase NvfI catalyzes the incorporation of “three” oxygen atoms, including an endoperoxide and a hydroxyl group, into its substrate asnovolin A, in a single enzyme turnover reaction through a different mechanism from those of previously characterized endoperoxidases.
A ring expansion strategy towards diverse azaheterocycles
Ring expansion to “grow” larger N-heterocycles often uses cycloaddition of strained aza-rings with π-bonds. Here, we report a formal cross-dimerization between three-membered aza-heterocycles and 3- and 4-membered-ring ketones, providing a straightforward means of assembling diverse N-heterocycles.
