Electrochemical Ring-Opening and -Closing of a Spiropyran.

ABSTRACT: The bistability of molecular switches is an essential characteristic in their use as functional components in molecular-based devices and machines. For photoswitches, light-driven switching between two stable states proceeds via short-lived changes of the bond order in electronically excited states. Here, bistable switching of a ditertbutyl-substituted spiropyran photoswitch is instead demonstrated by oxidation and subsequent reduction in an overall four-state cycle. The spiropyran structure chosen has reduced sensitivity to the effect of secondary electrochemical processes such as H⁺ production and provides transient access to a decreased thermal Z-E isomerization barrier in the one electron oxidized state, akin to that achieved in the corresponding photochemical

SUBMITTER: Steen JD 

PROVIDER: S-EPMC8154606 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature