On October 30, 2020, Yang, Chuluo; Ni, Fan published a patent.Electric Literature of 160377-42-4 The title of the patent was Chiral organic luminescent material and application thereof in electronic device. And the patent contained the following:
The title chiral organic luminescent material has a structural formula I as shown in claim 1, wherein A1 is alkenyl alkynyl, amino, etc.; A2 is alkenyl alkynyl, amino, etc.; R1-R3 are independently selected from hydrogen, deuterium, etc.; and A1, A2, R1, R2 and R3 are not connected or bonded via covalent bonds. The charge transfer-state chiral organic luminescent material with a D-A structure is formed by introducing a suitable electron acceptor (A) into chiral dihydroindenoacridine as an electron donor (D). The chiral dihydroindenoacridine as the D has large steric hindrance, is favorable for forming large torsion between D and A so as to reduce overlap of frontier mol. orbits, to further reduce the singlet-triplet energy level difference (ΔEST), activate the reverse intersystem crossing process so as to realize delayed fluorescence emission, and improve the exciton utilization rate of the device. The rigid chiral quaternary carbon in the chiral dihydroindenoacridine can enable the chiral organic light-emitting material to have circularly polarized luminescent properties, so that an organic electroluminescent device based on the chiral dihydroindenoacridine has circularly polarized luminescent properties, and effective guarantee is provided for electroluminescence to pass through a quarter-wave plate and a polarizing plate. The chiral organic luminescent material can be applied to electronic devices such as the organic light-emitting device, organic solar cell, organic field effect transistor, organic light emitting field-effect transistor, organic laser, organic sensor or organic spin electronic device. The experimental process involved the reaction of 5-(4-Bromophenyl)pyrimidine(cas: 160377-42-4).Electric Literature of 160377-42-4
The Article related to chiral organic luminescent material preparation oled, Heterocyclic Compounds (More Than One Hetero Atom): Triazines and other aspects.Electric Literature of 160377-42-4
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia