2016•Physical Chemistry Chemical PhysicsRequires access

Bis(phenylsulfone) as a strong electron acceptor of thermally activated delayed fluorescent emitters

Ji Won Yang, Jeong Min Choi, Jun Yeob Lee

Abstract

Bis(phenylsulfone) was developed as a strong electron acceptor of thermally activated delayed fluorescent emitters. The connection of two electron withdrawing phenylsulfone moieties through meta-position of phenyl produced the bis(phenylsulfone) acceptor and the strong electron acceptor strength of bis(phenylsulfone) enabled preparation of sky-blue and green thermally activated delayed fluorescent emitters in combination with weak carbazole donors. The bis(phenylsulfone) acceptor and carbazole donor combined organic materials performed as thermally activated delayed fluorescent emitters with a high quantum efficiency of 18.3%.

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Key concepts: Carbazole, Acceptor, Fluorescence, Photochemistry, Electron acceptor, Electron donor, Materials science, Chemistry