Patent ID: 7795801
Filing Date: 2010-09-14
Classification: C09B,H01L,Y10S

Abstract:
1. An organic electroluminescent element comprising a light emission layer and a hole blocking layer adjacent to the light emission layer, wherein: (i) the light emission layer contains a compound having a partial structure represented by Formula (1) and having a molecular weight of not more than 1700; and (ii) the hole blocking layer contains a compound represented by a formula selected from the group consisting of Formulas (2)-(10), and compounds 152 and 153, wherein: Ar represents a divalent group selected from a p-phenylene group which may have a methyl group, a phenyl group or a —F group as a substituent, a naphthalene diyl group, a biphenyl diyl group which may further have a phenyl group as a substituent, a terphenyl diyl group, a pyridine diyl group, a thiophene diyl group or a pyradine diyl group; R R wherein: R Ar wherein Ar wherein: R n and m each represent 1 and k and l each represent 4, wherein: R n and m each represent 1 and k and l each represent 4, wherein: R n and m each represent 1 and k and l each represent 4, wherein: R n and m each represent 1 and k and l each represent 4, wherein: R n and m each represent 1 and k and l each represent 4, and Z wherein o and p each represent 1; Ar Z L represents a divalent connecting group selected from —CH wherein: o and p each represent 1; Ar Z L represents a divalent connecting group selected from —CH