Patent ID: 7943715

Claim:
A polymer containing units represented by the following formula (1): wherein A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , A 8 , A 9 , A 10 , A 11 , and A 12 are independently of one another a hydrogen atom, a halogen atom, a hydroxyl group, a nitrile group, an alkyl group, an aralkyl group, a silyl group, a siloxy group, an amino group, an amide group, an imide group, or a hydrocarbylthio group, and A 3 and A 4 , A 5 and A 6 , or A 11 and A 12 may be linked with each other to form a ring; m is 0 or 1; and n is an integer of 1 to 20, and wherein the units represented by the formula (1) contain units represented by the following fromula (2), whose relative configuration between A 7 and A 8 is a trans-form: wherein all the symbols contained in the formula (2) are the same as those defined in the formula (1).