Acid/base-regulated reversible electron transfer disproportionation of N-N linked bicarbazole and biacridine derivatives.

ABSTRACT: Regulation of electron transfer on organic substances by external stimuli is a fundamental issue in science and technology, which affects organic materials, chemical synthesis, and biological metabolism. Nevertheless, acid/base-responsive organic materials that exhibit reversible electron transfer have not been well studied and developed, owing to the difficulty in inventing a mechanism to associate acid/base stimuli and electron transfer. We discovered a new phenomenon in which N-N linked bicarbazole (BC) and tetramethylbiacridine (TBA) derivatives undergo electron transfer disproportionation by acid stimulus, forming their stable radical cations and reduced species. The reaction occurs through a biradical intermediate generated by the acid-triggered N-N bond cleavage reaction of BC or TB

SUBMITTER: Pandit P 

PROVIDER: S-EPMC5707497 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature