Issue 20, 2023

Noncovalent tailoring of coordination complexes by resorcin[4]arene-based supramolecular hosts

Abstract

Molecular recognition of guest molecules in a confined cavity is one of the important phenomena in biological and artificial molecular systems. When the guest is trapped within an artificial nano-space, its conformation is fixed in an unusual fashion by noncovalent interactions with host frameworks, and also the guest is kept away from the bulk solvent by the steric effect of the host. Therefore, host–guest formations lead to the effective modulation of the chemical and physical properties of guests via noncovalent interactions. In contrast to the many examples of organic guests, the examples of host–guest formation using coordination complex guests have been less explored. This is simply due to the size and shape complementarity problem between small hosts and large coordination complex guests. Resorcin[4]arene-based supramolecular hosts have been shown to provide internal cavities that are large enough to fully accommodate coordination complexes within the internal spaces via effective molecular interactions. In this article, we focus on supramolecular strategies to control the chemical and physical properties of the coordination complex guests within resorcin[4]arene-based supramolecular hosts. By the careful selection of the host and guest complexes, these combinations can produce a new supramolecular system, showing unusual structures, redox, catalytic, and photophysical properties derived from the entrapped coordination complexes.

Graphical abstract: Noncovalent tailoring of coordination complexes by resorcin[4]arene-based supramolecular hosts

Article information

Article type
Perspective
Submitted
08 Бер 2023
Accepted
12 Кві 2023
First published
15 Кві 2023

Dalton Trans., 2023,52, 6604-6618

Noncovalent tailoring of coordination complexes by resorcin[4]arene-based supramolecular hosts

S. Horiuchi, M. Hayashi and K. Umakoshi, Dalton Trans., 2023, 52, 6604 DOI: 10.1039/D3DT00710C

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