Ternary host-guest complexes with rapid exchange kinetics and photoswitchable fluorescence.
BODIPY
anthracene
confinement
coordination cages
host-guest chemistry
stimuli-responsive materials
supramolecular chemistry
Journal
Chem
ISSN: 2451-9294
Titre abrégé: Chem
Pays: United States
ID NLM: 101688902
Informations de publication
Date de publication:
08 Sep 2022
08 Sep 2022
Historique:
received:
23
12
2021
revised:
18
02
2022
accepted:
11
05
2022
entrez:
22
9
2022
pubmed:
23
9
2022
medline:
23
9
2022
Statut:
epublish
Résumé
Confinement within molecular cages can dramatically modify the physicochemical properties of the encapsulated guest molecules, but such host-guest complexes have mainly been studied in a static context. Combining confinement effects with fast guest exchange kinetics could pave the way toward stimuli-responsive supramolecular systems-and ultimately materials-whose desired properties could be tailored "on demand" rapidly and reversibly. Here, we demonstrate rapid guest exchange between inclusion complexes of an open-window coordination cage that can simultaneously accommodate two guest molecules. Working with two types of guests, anthracene derivatives and BODIPY dyes, we show that the former can substantially modify the optical properties of the latter upon noncovalent heterodimer formation. We also studied the light-induced covalent dimerization of encapsulated anthracenes and found large effects of confinement on reaction rates. By coupling the photodimerization with the rapid guest exchange, we developed a new way to modulate fluorescence using external irradiation.
Identifiants
pubmed: 36133801
doi: 10.1016/j.chempr.2022.05.008
pii: S2451-9294(22)00262-5
pmc: PMC9473544
doi:
Types de publication
Journal Article
Langues
eng
Pagination
2362-2379Subventions
Organisme : European Research Council
ID : 820008
Pays : International
Informations de copyright
© 2022 The Author(s).
Déclaration de conflit d'intérêts
R.K. is a member of Chem’s advisory board.
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