Switching-on fluorescence by copper (II) and basic anions: A case study with a pyrene-functionalized squaramide
Picci G.
First
;Aragoni M. C.;Arca M.;Lippolis V.;Caltagirone C.
Last
2021-01-01
Abstract
The new symmetric acyclic N,N’-bis(1-pyrenyl) squaramide (H2L) functionalized with the pyrene moiety as a fluorogenic fragment has been designed and its ability to selectively detect specific anions and metals investigated. H2L selectively binds Cl− both in solution (DMSO 0.5% H2O and MeCN) and in the solid state, and allows to selectively detect Cu2+ in MeCN with the formation of a 2:1 metal-receptor complex, with a green intense emission appreciable by naked eye under the UV lamp. The H2L copper complex preserves its emission properties in the presence of Cl−. The addition of basic anions (OH−, CN−, and F−) up to 10 equivalents caused the deprotonation of the squaramide NHs and a dramatic change of the emission properties of the H2L copper complex.File | Size | Format | |
---|---|---|---|
molecules-26-01301-v2 (2).pdf open access
Type: versione editoriale
Size 4.03 MB
Format Adobe PDF
|
4.03 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.