Synthesis by a Cost-Effective Method and Electroluminescence of a Novel Efficient Yellowish-Green Thermally Activated Delayed Fluorescent Molecule

Ikbal Marghad (1, 2) , Dae Hyeon Kim (1) , Xiaohui Tian (3) , Fabrice Mathevet (4) , Corinne Gosmini (2) , Jean-Charles Ribierre (1, 5) , Chihaya Adachi (1, 5)

1 Center for Organic Photonics and Electronics Research
2 LCM - Laboratoire de chimie moléculaire
3 Department of Polymer Science and Engineering
4 LCP - Chimie des polymères
5 JST - Japan Science and Technology Agency

A new thermally activated delayed fluorescent molecule, TRZ 3(Ph-PTZ), containing three phenothiazines as donor units and a 2,4,6-triphenyl-1,3,5-triazine as the acceptor unit was synthesized using a simple cost-effective method based on a cobalt catalyzed cross-coupling. This compound was tested in organic light-emitting diodes and was found to show superior yellowish-green electroluminescence performance with a maximum external quantum efficiency of 17.4% and a maximum luminance value of 7430 cd/m2.

Domaines: Chimie organique

Ikbal Marghad, Dae Hyeon Kim, Xiaohui Tian, Fabrice Mathevet, Corinne Gosmini, et al.. Synthesis by a Cost-Effective Method and Electroluminescence of a Novel Efficient Yellowish-Green Thermally Activated Delayed Fluorescent Molecule. ACS Omega, 2018, 3 (2), pp.2254-2260. ⟨10.1021/acsomega.7b01570⟩. ⟨hal-01718124⟩