title: A rare case of dual emission in a neutral heteroleptic iridium(III) complex.
abstract: Herein we describe the synthesis and characterization of a neutral heteroleptic iridium complex bearing an unusual 2-pyridyl-6-methylthiazine dioxide ligand (pythdo). X-ray crystallographic analysis reveals that in the complex, the pythdo ligand is twisted and puckered, resulting in very low photoluminescent quantum efficiency. The emission profile is structured. Excited state lifetime measurements along with oxygen quenching studies point to a rare case of dual emission from different excited states whereby the high energy bands possess significant ligand-centered ((3)LC) character while the lower energy bands are predominantly characterized as a mixture of charge transfer ((3)CT) states. A detailed computational analysis corroborates the unusual photophysical behavior.
authors: Département de Chimie, Université de Sherbrooke, 2500 Boul. de l'Université, Sherbrooke, QC, Canada J1K 2R1.
authors: Sébastien
authors: S
authors: Ladouceur
authors: Loïc
authors: L
authors: Donato
authors: Maxime
authors: M
authors: Romain
authors: Bhanu P
authors: BP
authors: Mudraboyina
authors: Michael B
authors: MB
authors: Johansen
authors: James A
authors: JA
authors: Wisner
authors: Eli
authors: E
authors: Zysman-Colman