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
DOI
10.1016/j.jlumin.2023.120197
Hipersaite
https://www.sciencedirect.com/science/article/pii/S0022231323005306?via%3Dihub

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: uzzinas@rtu.lv; Tālr: +371 28399196