| abstract |
A compound suitable for use in an electroluminescencendevice, having the formula (1)n n wherein:n -Ar 1 to Ar 6 are the same or different and each isnindependently a substituted or non-substituted aryl group; -X 1 to X 6 are the same or different and each isnindependently -O-, -S-, >C=O, >SO 2 , -Si (B 1 )B 2 -, -N(B 1 )-,n-PB 1 -, -P(=O)B 1 -, -(CH 2 ) x -O-(CH 2 ) y -, a substituted or non-substitutednalkylene group or a substituted or non-substitutednalicyclic moiety, in which each of B 1 and B 2 isnindependently a substituted or non-substituted alkyl groupnor a substituted or non-substituted aryl group and each of nx and y is an integer of 0 to 20, provided that x + y isnnot 0; and -A is a group having the formula (2), (3), (4) or (5). |