Patent ID: 8395144

Claim:
A compound represented by Formula 1 below: wherein X is selected from the group consisting of CR 6 R 7 , NR 6 , O, S, S(═O), S(═O) 2 and SiR 6 R 7 ; R 1 through R 7 are the same or different and each independently selected from the group consisting of hydrogen (H), deuterium (D), an alkyl group of C 1 ˜C 40 , an alkenyl group of C 2 ˜C 40 , an alkynyl group of C 2 ˜C 40 , an aryl group of C 5 ˜C 40 , a heteroaryl group of C 5 ˜C 40 , an aryloxy group of C 5 ˜C 40 , an alkyloxy group of C 1 ˜C 40 , an arylamino group of C 5 ˜C 40 , a diarylamino group of C 5 ˜C 40 , an arylalkyl group of C 6 ˜C 40 , a cycloalkyl group of C 3 ˜C 40 and a heterocycloalkyl group of C 3 ˜C 40 , or a group binding with an adjacent group to form a fused aliphatic ring, a fused aromatic ring, a fused heteroaliphatic ring or a fused heteroaromatic ring; in R 1 through R 7 , the alkyl group of C 1 ˜C 40 , the alkenyl group of C 2 ˜C 40 , the alkynyl group of C 2 ˜C 40 , the aryl group of C 5 ˜C 40 , the heteroaryl group of C 5 ˜C 40 , the aryloxy group of C 5 ˜C 40 , the alkyloxy group of C 1 ˜C 40 , the arylamino group of C 5 ˜C 40 , the diarylamino group of C 5 ˜C 40 , the arylalkyl group of C 6 ˜C 40 , the cycloalkyl group of C 3 ˜C 40 and the heterocycloalkyl group of C 3 ˜C 40 are each independently unsubstituted or substituted by at least one selected from the group consisting of deuterium, halogen, nitrile, nitro, an alkyl group of C 1 ˜C 40 , an alkenyl group of C 2 ˜C 40 , an alkoxy group of C 1 ˜C 40 , an amino group of C 1 ˜C 40 , a cycloalkyl group of C 3 ˜C 40 , a heterocycloalkyl group of C 3 ˜C 40 , an aryl group of C 6 ˜C 40 and a heteroaryl group of C 5 ˜C 40 ; and two or more of R 1 through R 4 are each independently an aryl group of C 5 ˜C 40 .