Iridium complex and organic light-emitting diode using the same

1. An iridium complex represented by general formula (I):

wherein

A1, A2, A3, A4 and A5 are each independently a 5-membered unsaturated ring or a 6-membered unsaturated ring.

2. The iridium complex of claim 1 , wherein A1, A2, A3, A4 and A5 on a left side of formula (I) are respectively identical to A1, A2, A3, A4 and A5 on a right side of formula (I).

3. The iridium complex of claim 1 , wherein at least one of A1, A2, A3, A4 or A5 on a left side of formula (I) is different from the corresponding A1, A2, A3, A4 or A5 on a right side of formula (I).

4. The iridium complex of claim 1 , wherein at least one substituent on A1, A2, A3, A4 or A5 on a left side of formula (I) is different from a substituent at the corresponding position on the corresponding A1, A2, A3, A4 or A5 on a right side of formula (I).

5. The iridium complex of claim 1 , represented by general formula (IA):

wherein

each X 1 to X 11 are each independently carbon or nitrogen;

each R 1 is independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, substituted or unsubstituted C 6 -C 12 aryl, or —C f F 2f+1 , and f is an integer of 0 to 3;

each R 2 , each R 3 and each R 4 are independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, substituted or unsubstituted C 1 -C 6 alkoxyl, substituted or unsubstituted C 6 -C 12 aryl, or —C f F 2f+1 , and f is an integer of 0 to 3;

m is an integer of 0 to 3;

n is an integer of 0 to 4;

p is an integer of 0 to 4;

each R 5 is independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, or substituted or unsubstituted C 1 -C 6 alkoxy;

q is an integer of 1 to 2;

each R 6 is independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, or substituted or unsubstituted C 6 -C 12 aryl;

when m is equal to or greater than 2, two or more R 2 's can joint to form a C 3 -C 8 aromatic ring;

when n is equal to or greater than 2, two or more R 3 's can joint to form a C 3 -C 8 aromatic ring;

when p is equal to or greater than 2, two or more R 4 's can joint to form a C 3 -C 8 aromatic ring; and

when q is equal to or greater than 2, two or more R 5 's can joint to form a C 3 -C 8 aromatic ring.

6. The iridium complex of claim 5 , having a structure represented by one of formula (IA-1) to formula (IA-50):

7. An organic light-emitting diode, comprising two electrodes and a light-emitting layer disposed between the two electrodes, wherein the light-emitting layer contains the iridium complex of claim 1 .