| abstract |
The present invention is directed to a compound of the formula (2) and its uses thereof: n n n n n n n n n n n n wherein n T, U, V and W is CR 1 ; n R 1 is H; n X, is CR 2 and N with the proviso that at least one X is equal to CR 2 and at least one R 2 from CR 2 is equal to Z; n and n n and m are 0, 1, 2, 3 to 4 and either n is at least 3 or m is at least 3. |