| abstract |
Use of dibenzofuran and dibenzothiophene having at least one nitrogen-bonded 5-membered heterocyclic ring as a substituent as a host, blocker and / or charge transport material in organic electronics and at least one nitrogen-bonded 5-membered heterocyclic ring and at least one Dibenzofuran and dibenzothiophene having carbazolyl residues as substituents, their preparation and use of these compounds in organic electronics are disclosed. |