Kinetics and mechanism of the electrochemical reduction of 2,2′-bipyridine

Theoretical exploration of 2,2′-bipyridines as electro-active compounds in flow batteries

“…[21] To date, all research on bipyridinium-based redox compounds for flow batteries has focused on MV and MVderivatives in which the functional groups are attached to the nitrogen atoms at the 4,4'-position. Until now, no attention has been directed to 2,2'-bipyridine (Bpy) compounds for flow battery applications, in spite of the excellent electrochemical reversibility reported for some compounds [26,27] and an exhaustive body of literature on synthetic approaches that yield functionalized 2,2'-bipyridines. [28] Interestingly, the addition of functional groups to 2,2'bipyridine typically takes place on any position of the aromatic rings in contrast to 4,4'-bipirydine that is typically functionalized on the N-position, opening up a much larger molecular space that could be beneficial for selecting an optimal molecule for flow battery applications.…”