6533b861fe1ef96bd12c59db
RESEARCH PRODUCT
Emission Enhancement by Intramolecular Stacking between Heteroleptic Iridium(III) Complex and Flexibly Bridged Aromatic Pendant Group
Kaspars TraskovskisNatalija LesinaIgors MihailovsIgors MihailovsValdis KokarsAivars VembrisSergey Belyakovsubject
PhotoluminescenceQuenching (fluorescence)010405 organic chemistryStackingchemistry.chemical_elementQuantum yield010402 general chemistry01 natural sciences0104 chemical sciencesInorganic ChemistryCrystallographychemistryIntramolecular forceIridiumPhysical and Theoretical ChemistryPhosphorescencePendant groupdescription
Phosphorescent iridium(III) complexes suffer from a strong aggregation quenching, limiting their use in solution-processed or crystalline organic light-emitting diodes. Here we report how an intramolecular stacking between a flexibly bridged bulky aromatic pendant group and the core of nonionic heteroleptic complex can be exploited to minimize the negative effects of this drawback. The stacked conformation provides a rigid sterical shielding of the polar molecular surface, improving photoluminescence quantum yield of the complex both in solution and crystalline state.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-03-14 | Inorganic Chemistry |