P‐206: Pt(II) Complexes with High Color Purity in Blue Organic Light‐Emitting Diodes via Ligand Engineering

The planar structure of the Pt(II) complex makes it susceptible to intermolecular interactions. To address this, bulky groups like 3,5‐di‐tert‐butylphenyl in Pt1 and 2,6‐ diisopropylphenyl in Pt2 were introduced. This modification resulted stable spectra at high doping concentrations, a narrow full‐width at half maximum (FWHM) of 18 nm, and a maximum external quantum efficiency (EQE) of 21.4%.