| abstract |
Provided are polymers derived from polyamic acid or polyimide. The polymer derived from the polyamic acid and the polymer derived from the polyimide have picopores, and the polyamic acid and the polyimide comprise aromatic diamines and dianhydrides comprising at least one functional group present at an ortho position relative to an amine group. Repeat units prepared from the ride.n n n n Polyamic acid, polyimide, picopores, polybenzoxazoles, polybenzothiazoles, polypyrrolones, copolymers |