The oceanic redox state distinctly changed during the Precambrian eon. Entirely anoxic oceans in earliest Earth history first became mildly oxygenated in some shallow marine areas during the late Archean. The areal extension ...
Acenes are a series of polycyclic aromatic hydrocarbons built up from linearly fused benzene rings. Undecacene, the largest member of the acene family to date, was generated in polystyrene matrix under cryogenic conditions ...