Layered structure, electronic device using same, aromatic compound, and method for manufacturing said compound

摘要

The present invention provides: a layered structure having a substrate and a hole injection and/or hole transport layer comprising an aromatic compound having, on a side chain, at least one type of group having a cationic center;
an electronic device having the layered structure;an aromatic compound having, on a hydrocarbon side chain, at least one type of group having a cationic center;an aromatic compound having a leaving group on a hydrocarbon side chain;

and a method for manufacturing the aromatic compound having, on a hydrocarbon side chain, at least one type of group having a cationic center, the method comprising reacting the aromatic compound having a leaving group on a hydrocarbon side chain with a specific nitrogen compound, phosphorus compound, sulfur compound, or a combination of two or more of these compounds, thereby converting the aromatic compound into an onium salt thereof. When used as an electronic device material, and particularly as a hole transport and/or hole injection material, the aromatic compound can achieve a higher current density at a given voltage.

主权项

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 Ar4 represents an (i+2)-valent aromatic group which may have a substituent, Ar5 represents a (j+2)-valent aromatic group which may have a substituent, and Ar6 represents a (k+1)-valent aromatic group which may have a substituent, but at least two of Ar4, Ar5 and Ar6 may be mutually bonded to form at least one ring, each Z1 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,
—N+R1R2R3  (2-1)—P+R1R2R3  (2-2)—S+R1R2  (2-3) wherein for each of formulas (2-1), (2-2) and (2-3), each of R1, R2 and R3 independently represents a hydrogen atom or a monovalent hydrocarbon group which may have a substituent, but at least two of R1, R2 and R3 may be mutually bonded to form at least one ring, and
[Chemical Formula 19]Ar7  (12)wherein Ar7 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.