Bipyridyl-substituted benzo[1,2,3]triazoles as a thermally stable electron transporting material for organic light-emitting devices

Charge transporting and thermally activated delayed fluorescence materials for OLED applications

“…Moreover, when 149 was employed as an orange emitter in a non-doped OLED device, a high EQE of over 10% was realized. Zhang et al developed host-free yellow-green OLEDs with a high EQE of over 20% using an oxadiazole-based TADF emitter (151). 119 The DFT analysis suggested that the synthesized compound has donor-acceptor characteristics, in which carbazole acts as the donor unit and oxadiazole acts as the acceptor unit because the HOMO is mostly distributed over the carbazole ring and LUMO is found to be populated over oxadiazole units.…”

Synthesis, crystal structure and Hirshfeld surface analysis of (4-methylphenyl)[1-(pentafluorophenyl)-5-(trifluoromethyl)-1H-1,2,3-triazol-4-yl]methanone

“…For instance, the perfluorobiphenyl moiety was used as an electron acceptor for new donor-acceptor compounds with thermally activated delayed fluorescence (TADF) applied for the fabrication of TADF-based OLEDs (Danyliv et al, 2021;Hladka et al, 2018). On the other hand, 1,2,3-triazoles, as a result of their electronaccepting properties, are widely used in the design of organic phosphors (Gavlik et al, 2017;Ferna ´ndez-Herna ´ndez et al, 2013;Tomkute-Luksiene et al, 2013;Ichikawa et al, 2011). Recently, a series of 3,6-bis(4-triazolyl)pyridazines equipped with terminal phenyl substituents with varying degrees of fluorination were synthesized and proposed to be used as electron-transporting/hole-blocking materials in organic electronics (Birkenfelder et al, 2017).…”

Chemical structure dependent electron transport in 9,10-bis(2-phenyl-1,3,4-oxadiazole) derivatives of anthracene

“…have been synthesized and used as electron transport materials. [30][31][32][33][34][35][36][37][38][39] Molecules containing oxadiazole moieties have been found to possess attracting electron transport properties. [40][41][42] PBD is an oxadiazole molecule, which has been widely used as electron transport material.…”