Skip to Main content Skip to Navigation
Journal articles

Switching of reverse charge transfers for a rational design of an OFF-ON phosphorescent chemodosimeter of cyanide anions.

Abstract : A rational approach to luminescence turn-on sensing of cyanide by a dicyanovinyl-substituted acetylide Pt(II) complex, which primarily relies on the nucleophilic addition reaction of cyanide anions to the α-position of the dicyanovinyl group, is described. The strategy used for the design of this cyanide-selective sensor takes advantage of a switch of charge transfer from ML'CT to MLCT/L'LCT in this acetylide Pt(II) sensor. As a result, this chromophore that exhibits almost no basal luminescence displays observable changes in its UV-visible spectrum and acquires strong phosphorescence upon addition of cyanide anions. DFT computations reveal that the frontier molecular orbitals of the anionic system obtained after addition of CN(-) are drastically different from those of the neutral initial species. TD-DFT computations permitted a full assignment of the observed absorption bands and explained well the emissive properties of the species under consideration.
Document type :
Journal articles
Complete list of metadatas

https://hal-univ-rennes1.archives-ouvertes.fr/hal-00855442
Contributor : Béatrice Mahi <>
Submitted on : Thursday, August 29, 2013 - 2:23:09 PM
Last modification on : Monday, May 11, 2020 - 12:20:17 PM

Identifiers

Citation

Jean-Luc Fillaut, Huriye Akdas-Kilig, Edouard Dean, Camille Latouche, Abdou Boucekkine. Switching of reverse charge transfers for a rational design of an OFF-ON phosphorescent chemodosimeter of cyanide anions.. Inorganic Chemistry, American Chemical Society, 2013, 52 (9), pp.4890-7. ⟨10.1021/ic302478e⟩. ⟨hal-00855442⟩

Share

Metrics

Record views

498