Reversible reduction drives anion ejection and C₆₀ binding within an Fe^II ₄L₆ cage.

ABSTRACT: Fe^II ₄L₆ tetrahedral cage 1 was prepared from a redox-active dicationic naphthalenediimide (NDI) ligand. The +20 charge of the cage makes it a good host for anionic guests, with no binding observed for neutral aromatic molecules. Following reduction by Cp₂Co, the cage released anionic guests; subsequent oxidation by AgNTf₂ led to re-uptake of anions. In its reduced form, however, 1 was observed to bind neutral C₆₀. The fullerene guest was subsequently ejected following cage re-oxidation. The guest release process was found to be facilitated by anion-mediated transport from organic to aqueous solution. Cage 1 thus employs electron transfer as a stimulus to control the uptake and release of both neutral an

SUBMITTER: Lu Z 

PROVIDER: S-EPMC8146419 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature