Claims
- 1. An organic electroluminescent device, comprising an anode, a cathode, and at leas one electroluminescent medium containing a compound of the formula:
- 2. The device as claimed in claim 1, wherein R1 and R2 are methyl, ethyl, propyl, n-butyl, aryl, or heteroaryl, including phenyl, furyl, thienyl, pyridyl or other heterocyclic system; R3 and R4 are hydrogen, methyl, ethyl, propyl, n-butyl, i-propyl, t-butyl, sec-butyl, t-amyl, wherein R3 and R4 are arranged respectively with R1 and R2 as follows: R1, R3=R2, R4=—(CH2)2—, —(CH2)3—, —(CH2)2C(CH3)2—; R5 is hydrogen, methyl, ethyl, propyl, n-butyl, i-propyl, t-butyl, sec-butyl, t-amyl, —(CH2)3—,—(CH2)4—, or heteroaryl, including phenyl furyl, thienyl, pyridyl and other heterocyclic system connecting with benzenic ring.
Priority Claims (1)
Number |
Date |
Country |
Kind |
90106875 |
Mar 2001 |
TW |
|
Parent Case Info
[0001] This application is a continuation-in-part of application Ser. No. 09/855,649 filed on May 16, 2001, now pending.
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
09855649 |
May 2001 |
US |
Child |
10394020 |
Mar 2003 |
US |
Parent |
09810244 |
Mar 2001 |
US |
Child |
09855649 |
May 2001 |
US |