Patent ID: 7816667

Claim:
A silsesquioxane-based compound represented by Formula 1: wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are each independently a substituent having a hole transport moiety, a substituent having an electron transport moiety, or a substituent having a cross-linkable moiety represented by —Si(M 1 )(M 2 )(M 3 ) where M 1 , M 2 , and M 3 are each independently hydrogen, a C 1 -C 20 alkyl group, a C 1 -C 20 alkoxy group, or a halogen group, and at least one of M 1 , M 2 , and M 3 is a C 1 -C 20 alkoxy group or a halogen group, and at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 is the substituent having the cross-linkable moiety; and wherein at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 ,R 7 , and R 8 is one of the following substituents(i)-(iv): (i) the substituent having the hole transport moiety selected from the group consisting of where Q 1 , Q 2 , Q 3 , Q 4 , and Q 5 are each independently N, O, or S; (ii) the substituent having the hole transport moiety represented by Formula 3: (iii) the substituent having the electron transport moiety selected from the group consisting of where Q 6 , Q 7 , and Q 8 are each independently N, O, or S; and (iv) the substituent having the electron transport moiety represented by Formula 4: