1312951-81-7Relevant articles and documents
Novel blue thermal activity delayed fluorescence material and application thereof
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Paragraph 0031-0033; 0039-0041, (2020/09/16)
In order to further reduce delta EST and obtain a more efficient TADF material, the invention discloses a novel blue thermal activity delayed fluorescence material and application thereof, and the blue thermal activity delayed fluorescence material is a novel blue light TADF material with dimethyl acridine as a donor, diphenyl sulfone as an acceptor, a benzene ring or pyridine as pi bridge, wherein the dimethyl acridine is a strong electron donating unit, the diphenyl sulfone is a weak acceptor unit, and the combination of the dimethyl acridine and the diphenyl sulfone is beneficial to reducing intramolecular charge transfer effect and realizing blue light emission; the benzene ring or the pyridine pi bridge can increase distortion of molecules, HOMO and LUMO orbital separation can be achieved, the delta EST is reduced, and TADF performance is obtained; meanwhile, the conjugation degree of the molecules can be regulated and controlled at different positions of the dimethyl acridine donor and the diphenyl sulfone acceptor, so that the light-emitting wavelength of the material is regulated, and the TADF material with the emission wavelength within 420-450 nm is realized.
