| abstract |
An object of the invention is to provide an organicnEL device-forming compound and an organic EL device whichnproduce light emission of satisfactory luminance,nespecially at long wavelength and are durable in thatnimproved light emitting performance lasts for a long time.nThe object is attained by a compound having a basicnskeleton represented by formula (I) and an organic ELndevice comprising the same.n nIn formula (I), R 1 , R 2 , R 3 , and R 4 each are a substituted ornunsubstituted aryl or alkenyl group; R 5 , R 6 , R 7 , and R 8 eachnare hydrogen; at least two of R 1 to R 4 are aryl groupsnwhich are at least bicyclic, aryl groups having aryl, amino,nalkenyl, aryloxy or heterocyclic groups as substituents, ornalkenyl groups, and when at least two substituents arenmonocyclic aryl groups, they further have substituents, andnwhen the substituents are amino groups, at least two of R 1 ,nR 2 , R 3 , and R 4 have substituted or unsubstituted aryl groupsnas substituents. |