Reversible reduction drives anion ejection and C60 binding within an FeII4L6 cage

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)1097-1101
Journal / PublicationChemical Science
Volume11
Issue number4
Online published5 Dec 2019
Publication statusPublished - 28 Jan 2020
Externally publishedYes

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Abstract

FeII4L6 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 and charged guests, through distinct pathways.

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Reversible reduction drives anion ejection and C60 binding within an FeII4L6 cage. / Lu, Zhenpin; Ronson, Tanya K.; Nitschke, Jonathan R.
In: Chemical Science, Vol. 11, No. 4, 28.01.2020, p. 1097-1101.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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