Patent ID: 8853342

Claim:
A crosslinkable liquid crystalline polymer formed by polymerizing a precursor monomer in the presence of a biphenyl alkynyl crosslinking agent having the following general formula (I): wherein, X 1 is Y 1 R 1 ; Y 1 is NR 2 , C(O)NR 2 , or NR 2 C(O); R 1 and R 2 are independently hydrogen, hydroxyl, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, or heterocyclyl; R 5 is alkynyl, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, heterocyclyl, halo, haloalkyl, or Y 2 R 7, wherein Y 2 is O, C(O), OC(O), C(O)O, S, NR 8 , C(O)NR 8 , or NR 8 C(O), and R 7 and R 8 are independently hydrogen, hydroxyl, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, or heterocyclyl; R 6 are independently alkynyl, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, heterocyclyl, halo, or haloalkyl; a is from 1 to 5; m is from 0 to 4; and n is from 0 to 5.