Red-green-blue emission from tris(5-aryl-8-quinolinolate)Al(III) complexes.
A simple yet effective strategy for synthesis of 5-aryl-8-quinolinolate-based electroluminophores with tunable emission wavelengths is presented. Two different pathways for the attachment of electron-donating or electron-withdrawing aryl groups to the 5-position of the quinolinolate ligand via Suzuki coupling were developed. A successful tuning in the emission color was achieved: the emission wavelength was found to correlate with the Hammett constant of the respective substituents, providing a powerful strategy for prediction of the optical properties of new electroluminophores.
Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403,USA.
Radek
R
Pohl
Victor A
VA
Montes
Joseph
J
Shinar
Pavel
P
Anzenbacher