Novel phenoxazine-benzonitrile and phenothiazine-benzonitrile donor-acceptor molecules with thermally activated delayed fluorescence (TADF)

Baraket, Faiza; Pedras, Bruno; Torres, Erica; Dammak, Mohamed; Berberan-Santos, Mário N.; Brites, Maria João

http://hdl.handle.net/10400.9/3283

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Authors

Berberan-Santos, Mário N.

Brites, Maria João

Abstract(s)

ABSTRACT: Four novel TADF emitters, containing phenothiazine and phenoxazine as electron-donors and benzonitrile derivatives as electron-acceptors were synthesized and fully characterized. Their photophysical (absorption and emission spectra, molar extinction coefficients, fluorescence quantum yields and lifetimes) and electrochemical properties (HOMO and LUMO energy levels) were measured, and drop-cast solid films of the four compounds were obtained to perform TADF studies. The obtained values for Delta E-ST indicate that these compounds are candidates for OLED applications.

Keywords

Materials Photophysical properties Electrochemical properties Fluorescence Optical properties

URI

http://hdl.handle.net/10400.9/3283

Citation

Baraket, Faiza... [et.al.] - Novel phenoxazine-benzonitrile and phenothiazine-benzonitrile donor-acceptor molecules with thermally activated delayed fluorescence (TADF). In: Dyes and Pigments, 2020, Vol. 175, article nº 108114