Thiazoline Carbene−Au(I)−Amide Complexes Exhibiting Dimer Electroluminescence
Journal of Luminescence 2023
Armands Rudušs, Žanis Sisojevs, Annija Jēce, Sergejs Beļakovs, Kitija Alise Štucere, Aivars Vembris, Yu-Hsuan Chen, Chih-Hao Chang, Kaspars Traskovskis

Two-coordinate coinage metal (Cu, Ag and Au) complexes with linear carbene–metal–amide (CMA) structure have recently emerged as promising thermally activated delayed fluorescence (TADF) emitters for OLED application. Herein we investigate a series of eight new Au(I) CMA complexes, which incorporate derivatives of 1,3-thiazoline as N-heterocyclic carbene (NHC) ligands. The complexes exhibit blue to green luminescence in thin films. A limitation of the torsional motions around the metal-ligand axis in a combination with the heavy gold atom effect enables highly efficient TADF with photoluminescence quantum yield (PLQY) of up to 0.99 and radiative rates nearing 1·106 s−1. A formation of emissive dimers of complex molecules was observed in vacuum processed OLEDs. Achieved dual electroluminescence from the redshifted (by 120 nm) dimeric species in a combination with co-occurring monomer emission opens potential application prospects in construction of single-emitter white OLEDs.

Atslēgas vārdi
Organic light emitting diode,Thermally activated delayed fluorescence, Carbene metal amide, Gold complex, Conformational control,Heavy atom effect

Rudušs, A., Sisojevs, Ž., Jēce, A., Beļakovs, S., Štucere, K., Vembris, A., Chen, Y., Chang, C., Traskovskis, K. Thiazoline Carbene−Au(I)−Amide Complexes Exhibiting Dimer Electroluminescence. Journal of Luminescence, 2023, Vol. 264, Article number 120197. ISSN 0022-2313. Pieejams: doi:10.1016/j.jlumin.2023.120197

Publikācijas valoda
English (en)
RTU Zinātniskā bibliotēka.
E-pasts:; Tālr: +371 28399196