Red organic electroluminescent devices
AssigneeEastman Kodak Company
InventorsChin H. Chen, Ching W. Tang, Jianmin Shi
Life of this patent
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Abstract
An organic EL device, includes an anode and a cathode, and at least one organic luminescent medium containing a compound of the formula: ##STR1## wherein: R.sub.1, and R.sub.2 are individually alkyl of from 1 to 20 carbon atoms, aryl, carbocyclic and other heterocyclic systems; and R.sub.3, and R.sub.4 are individually alkyl of from 1 to 10 carbon atoms, and a branched or unbranched 5 or 6 member substituent ring connecting with R.sub.1, R.sub.2 respectively; and R.sub.5 is alkyl of from 2-20 carbon atoms; sterically hindered aryl and heteroaryl; and R.sub.6 is alkyl of from 1 to 10 carbon atoms, and a 5 or 6-member carbocyclic ring connecting with R.sub.5.
Claims5
An organic EL device, comprising an anode and a cathode, and at least one organic luminescent medium containing a compound of the formula:
- ##STR18## wherein:
- R.sub.1, and R.sub.2 are individually alkyl of from 1 to 20 carbon atoms, aryl, carbocyclic and other heterocyclic systems;
- and
- R.sub.3, and R.sub.4 are individually alkyl of from 1 to 10 carbon atoms, and a branched or unbranched 5 or 6 member substituent ring connecting with R.sub.1, R.sub.2 respectively;
- and
- R.sub.5 is alkyl of from 2-20 carbon atoms;
- sterically hindered aryl and heteroaryl;
- and
- R.sub.6 is alkyl of from 1 to 10 carbon atoms, and a 5 or 6-member carbocyclic ring connecting with R.sub.5.
An organic EL device, comprising an anode and a cathode, and at least one organic luminescent medium containing a compound of the formula:
- ##STR19## wherein:
- R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are individually alkyl of from 1 to 10 carbon atoms;
- R.sub.5 is alkyl of from 2-20 carbon atoms;
- sterically hindered aryl and heteroaryl;
- and
- R.sub.6 is alkyl of from 1 to 10 carbon atoms, and a 5 or 6-member carbocyclic ring connecting with R.sub.5.
Dependencies are inferred from the claim text.