| abstract |
Diamines of formula I are disclosed: [Formula I] . In formula I, Q is a group having a spiro atom; R 7 and R 8 are the same or different at each occurrence and are F, CN, alkyl, fluoroalkyl, hydrocarbon aryl, heteroaryl, alkoxy, fluoroalkoxy, aryloxy, or silyl, adjacent R 7 and/or R 8 groups can be joined together to form an aromatic ring; c and d are the same or different at each occurrence and are integers from 0 to 4; m and q are the same or different and are integers from 0 to 6. |