Spontaneous Water-Promoted Self-Aggregation of a Hydrophilic Gold(I) Complex Due to Ligand Sphere Rearrangement

Aggregating gold(I) complexes in solution through short aurophilic contacts promotes new photoluminescent deactivation pathways (aggregation-induced emission, AIE). The time dependence of spontaneous AIE is seldom studied. We examine the behavior of complex [Au(<i>N</i><sup>9</s...

Olles dieđut

Bibliográfalaš dieđut
Váldodahkkit: Ainhoa Rodríguez-Gobernado, Daniel Blasco, Miguel Monge, José M. López-de-Luzuriaga
Materiálatiipa: Artihkal
Giella:English
Almmustuhtton: MDPI AG 2023-07-01
Ráidu:Molecules
Fáttát:
Liŋkkat:https://www.mdpi.com/1420-3049/28/15/5680
Govvádus
Čoahkkáigeassu:Aggregating gold(I) complexes in solution through short aurophilic contacts promotes new photoluminescent deactivation pathways (aggregation-induced emission, AIE). The time dependence of spontaneous AIE is seldom studied. We examine the behavior of complex [Au(<i>N</i><sup>9</sup>-hypoxanthinate)(PTA)] (<b>1</b>) in an aqueous solution with the aid of variable-temperature NMR, time-resolved UV–Vis and photoluminescence spectroscopy, and PGSE NMR. The studies suggest that partial ligand scrambling in favor of the ionic [Au(PTA)<sub>2</sub>][Au(<i>N</i><sup>9</sup>-hypoxanthinate)<sub>2</sub>] pair followed by anion oligomerization takes place. The results are rationalized with the aid of computational calculations at the TD-DFT level of theory and IRI analysis of the electron density.
ISSN:1420-3049