financially supported by the National Natural Science Foundation of China(Nos.50973067 and 51173115);the Ministry of Education (the Foundation for Ph.D.training,Grant No.20110181110030) of China
Polyimides(PI) with different side chains in structure were synthesized by copolycondensation of pyromelliticmdianhydride(PMDA) with 3,5-diamino-(4'-methane acid hexyl ester) phenyl-benzamide(C6-PDA),(4-buto...