Controllable construction of red thermally activated delayed fluorescence molecules based on a spiro-acridine donor

Abstract

Red and near-infrared (NIR) thermally activated delayed fluorescence (TADF) molecules show excellent potential applications in organic light-emitting diodes (OLEDs). Due to the lack of systematic studies on the relationship between...

Efficient orange and red thermally activated delayed fluorescence materials based on 1,8-naphthalimide derivatives

“…24,25 Various efforts have been made towards achieving efficient red thermally activated delayed uorescence (TADF) emitters, with the main approach being the development of strong electron acceptors. [26][27][28] The aromatic-imide group, with its rigid pconjugated structures and strong electron-withdrawing ability, has been widely used in the construction of organic semiconductors. [29][30][31] 1,8-Naphthalimide (NI) group, possessing high electron affinity and two carbonyl units, has been extensively studied for its excellent hole-blocking and electrontransporting abilities.…”

Thermally activated delayed fluorescence of a Ir(iii) complex: absorption and emission properties, nonradiative rates, and mechanism

“…[17][18][19] Besides great progress achieved in experiments, theoretical workers also made a lot of contribution to developing TADF emitters. [20][21][22][23][24][25] Combined density functional theory and multi-reference configuration interaction (DFT/MRCI) methods, Marian et al investigated photophysical properties of a three-coordinate mononuclear Cu(I) complex. 26 At the room temperature, the estimated r(ISC) rates are larger than the fluorescence and phosphorescence rates, therefore, they predicted that TADF should be coexisted with the phosphorescence in this Cu(I) complex.…”