Title: Organic EL Material
Application Number: 00812355 Application Date: 2000.08.30
Publication Number: 1372588 Publication Date: 2002.10.02
Approval Pub. Date: 2004.07.28 Granted Pub. Date: 2004.07.28
International Classifi-cation: C09K11/06;H05B33/14;H05B33/22
Applicant(s) Name: Nippon Steel Chemical Co., Ltd. Address:
Inventor(s) Name: Soeda Mahito;Yiyazaki Hiroshi;Saito Tohru
Attorney & Agent: wang jie
Abstract:
    This invention relates to an organic aluminum complex manifesting excellent performance when used in an organic EL device and to a process for preparing said complex. The organic EL material of this invention comprises an organoaluminum complex which generates heat of 2 J/g or less In the range of 350-400 DEG C. and absorbs heat of 70-120 j/g, in the range of 400-450 DEG C., with the maximum of an endothermic peak being located near 420 DEG C. on analysis by differential scanning calorimetry. The organic EL material can be obtained by refining the raw material (8-quinolinolato)aluminum by sublimation under reduced pressure of 20 Torr or less while maintaining the temperature in the sublimation zone above 300 DEG C. and below 420 DEG C. and the temperature in the product recovery zone above 100 DEG C. and below 250 DEG C.
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