| abstract |
Disclosed is use of dibenzofurans and dibenzothiophenes which have at least one nitrogen-bonded five-membered heterocyclic ring as substituent as host, blocker, and /or charge transport material in organic electronics. Dibenzofurans and dibenzothiophenes which comprise at least one nitrogen-bonded five-membered heterocyclic ring and at least one carbazolyl radical as substituents, a preparation process thereof, and use of these compounds in organic electronics are also disclosed. |