Publication: Luminescent platinum(IV) complexes bearing cyclometalated 1,2,3-triazolylidene and bi- or terdentate 2,6-diarylpyridine ligands
Authors
Vivancos Ureña, Ángela ; Bautista, Delia ; González Herrero, Pablo
item.page.secondaryauthor
item.page.director
Publisher
Wiley
publication.page.editor
publication.page.department
DOI
https://doi.org/10.1002/chem.201900489
item.page.type
info:eu-repo/semantics/article
Description
Abstract
The synthesis, structure, and photophysical properties of luminescent PtIV complexes that combine cyclometalated 1,2,3-triazolylidene and bi- or terdentate 2,6-diarylpyridine ligands are reported. The targeted complexes represent the first examples of PtIV species with a cyclometalated mesoionic aryl-NHC ligand. They exhibit moderate or weak emissions in fluid solution at 298 K arising from 3LC states, which become very intense in poly(methyl methacrylate) (PMMA) matrices at 298 K. DFT and TD-DFT calculations confirm that the chromophoric ligand is the cyclometalated 2,6-diarylpyridine and show that the aryl-NHC ligand exerts a beneficial effect on the emission efficiencies of these derivatives by increasing the energy of deactivating LMCT excited states with respect to comparable PtIV complexes with cyclometalated 2-arylpyridine ligands.
publication.page.subject
Citation
Chemistry A European Journal, 2019, 25, 6014-6025
item.page.embargo
Collections
Ir a Estadísticas
Este ítem está sujeto a una licencia Creative Commons. http://creativecommons.org/licenses/by-nc-nd/3.0/es/