Reactive oxygen species with small molecules

Strangely, these small molecules are also used industrially as oxidation catalysts, however, small changes in their structures lead to dramatically different behaviour. In these model compounds, unlike SOD2, the metal is bound by two oxygen and two nitrogen atoms in a square planar orientation with axial positions occupied by water or reactive oxygen species. The superoxide dismutase catalytic cycle has been proposed to occur by a one electron mechanism ... 

Some copolymers, such as PS-I -PIAT, self-assemble into polymersomes with an intrinsically porous membrane [78], whereas others require membrane permeabilization in order to form nanoreactors. For example, PMOXA- -PDMS- -PMOXA or PMOXA-fc-PDMS membranes are permeable to oxygen and reactive oxygen species [9], but not to small molecules [90-92], In the case of impermeable membranes, the following procedures can be used to provide accessibility (1) permeabilization by addition of organic solvents. 

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