Pyrimidine‐Based Four‐Coordinate O^N^O Boron Complexes: Synthesis, Photophysical and Theoretical Studies, and TADF‐Based OLED Devices
Year: 2025
Type: article
Abstract: This article describes the synthesis, along with the full photophysical and computational characterization, of a series of push‐pull boron complexes comprising a sterically hindered donor connected to a pyrimidine‐based O^N^O boron chelate. The dimethylacridan‐functionalized fluorophore appears to be the most emissive in the series, both in toluene solution and in the solid state (as a powder), displaying thermally activated delayed fluorescence (TADF) emission in degassed media due to a small singlet‐triplet energy gap. This result is in line with a previously reported pyridine analogue, which also exhibits delayed emission. Incorporation of this TADF compound into an organic light‐emitting diode led to the observation of intense electroluminescence, with EQEmax values reaching 9.7% at a 5 wt% doping concentration.
Source: Chemistry - A European Journal
Institutions: Centre National de la Recherche Scientifique, Institut des Sciences Chimiques de Rennes, Université de Rennes, Universidad de Jaén, École Polytechnique, Laboratoire de Physique des Interfaces et des Couches Minces, Institut Polytechnique de Paris, University of Castilla-La Mancha, Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, Université Rennes 1
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,640
OpenAlex ID: W4410220559