Deuterated aryl amine compound, preparation method thereof, and organic light emitting diode using the same

1. A deuterated aryl amine compound consisting essentially of, the compound represented by Formula HIL-1 or Formula HIL-2:

2. An organic light emitting diode, comprising a hole injecting layer and a light emitting layer, said hole injecting layer consisting essentially of the deuterated aryl amine compound according to claim 1 .

3. A method for preparing the aryl amine compound of claim 1 , comprising:

(1) reacting a compound of Formula 6 with a compound of Formula 7a and/or 7b, followed by halogenating the resulting product, to obtain compounds represented by general formulae Ar 1 —Y and Ar 2 —Y;

(2) reacting any one compound shown in Formula 8 with a compound of Formula 9, to obtain a compound of Formula 5; and

(3) reacting the compound of Formula 5 with compounds represented by general formulae Ar 1 —Y and Ar 2 —Y, to obtain the compound of Formula 1:

wherein Ar 1 and Ar 2 are respectively a diphenylaminophenyl group represented by Formula 2 and are identical to or different from each other;

Ar 3 and Ar 4 are respectively a naphthyl group represented by Formula 3 and are identical to or different from each other;

R 1 to R 21 are respectively selected from the group consisting of hydrogen, deuterium, C 1 -C 30 alkyl group and a halogen atom, provided that at least one of R 1 to R 21 are deuterium atom;

X is selected from the species of structures shown in Formula 4 and may be unsubstituted or substituted with at least one deuterium atoms;

Y is a halogen atom selected from F, Cl, Br and I; and

Z is hydrogen or deuterium.