Issue 24, 2021

Gating the photoactivity of azobenzene-type ligands trapped within a dynamic system of an M4L6 tetrahedral cage, an M2L2 metallocycle and mononuclear MLn complexes

Abstract

Complexation of transition metal ions by a doubly chelating bis(diimine)-type ligand incorporating a photoresponsive azobenzene linker yielded two types of structurally distinct metallosupramolecular architectures, an [M4L6]8+ tetrahedral cage and an [M2L2]4+ metallocycle. In solution, these complexes are open for reversible interconversions between each other by varying the M : L ratio, or switching into a dynamic library of [M(L′/L′′)n]2+ mononuclear species upon addition of a competing monoamine. While the unbound ligand presents the reversible photoactivity of the azo bond, its complexes are photochemically inert, due to the inherent topology of these assemblies resulting from the restrictions of coordinate bond formation.

Graphical abstract: Gating the photoactivity of azobenzene-type ligands trapped within a dynamic system of an M4L6 tetrahedral cage, an M2L2 metallocycle and mononuclear MLn complexes

Supplementary files

Article information

Article type
Research Article
Submitted
20 8 2021
Accepted
20 10 2021
First published
20 10 2021
This article is Open Access
Creative Commons BY license

Inorg. Chem. Front., 2021,8, 5195-5200

Gating the photoactivity of azobenzene-type ligands trapped within a dynamic system of an M4L6 tetrahedral cage, an M2L2 metallocycle and mononuclear MLn complexes

P. Cecot, A. Walczak, G. Markiewicz and A. R. Stefankiewicz, Inorg. Chem. Front., 2021, 8, 5195 DOI: 10.1039/D1QI01063H

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