| 摘要 |
An organic EL device, includes an anode and a cathode, and at least one organic luminescent medium containing a compound of the formula: wherein: R1, and R2 are individually alkyl of from 1 to 20 carbon atoms, aryl, carbocyclic and other heterocyclic systems; and R3, and R4 are individually alkyl of from 1 to 10 carbon atoms, and a branched or unbranched 5 or 6 member substituent ring connecting with R1, R2 respectively; and R5 is alkyl of from 2-20 carbon atoms; sterically hindered aryl and heteroaryl; and R6 is alkyl of from 1 to 10 carbon atoms, and a 5 or 6-member carbocyclic ring connecting with R5.
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