Patent ID: 9184388
Filing Date: 2015-11-10
Classification: C07C,C07D,C07F,C08G,H01L,Y02E,Y02P

Abstract:
1. A layered structure having a substrate, and a hole injection and/or hole transport layer comprising an aromatic compound having a structural unit represented by formula (1) and a structural unit represented by formula (12) below: wherein Ar 4 represents an (i+2)-valent aromatic group which may have a substituent, Ar 5 represents a (j+2)-valent aromatic group which may have a substituent, and Ar 6 represents a (k+1)-valent aromatic group which may have a substituent, but at least two of Ar 4 , Ar 5 and Ar 6 may be mutually bonded to form at least one ring, each Z 1 independently represents a divalent group, each Y independently represents a group represented by formula (2-1), (2-2) or (2-3) below, each A independently represents a monovalent or divalent or higher anion, and when at least one A is a divalent or higher anion, the structural unit may further have another cation, and each of i, j and k independently represents an integer of 0 or greater, provided that i+j+k is an integer of 1 or greater, wherein for each of formulas (2-1), (2-2) and (2-3), each of R wherein Ar 7 represents a divalent aromatic group, and some or all of the hydrogen atoms in the aromatic group may be substituted with a group selected from the group consisting of a fluorine atom, an alkyl group of 1 to 20 carbon atoms which may have a substituent, an alkoxy group of 1 to 20 carbon atoms which may have a substituent, an aryl group of 6 to 20 carbon atoms which may have a substituent, an aryloxy group of 6 to 20 carbon atoms which may have a substituent, and an acyl group of 2 to 20 carbon atoms which may have a substituent.