Synthesis of Ladder Polymers Composed of: (Bis-Quinoxalino-Pyrene;Bis-Imidazo-Naphthaldimide) and (Bis-Quinoxalino-Pyrene;Bis-Imidazo-Pyromellitimide) Structures.

摘要

A new aromatic heterocyclic tetraamine 2,3,11,12-tetraamino-diquinoxal-2,3-e,2,3 -1pyrene has been prepared and polymerized with 1,4,5,8-naphthalene tetracarboxylic acid and pyromellitic dianhydride. The resulting ladder polymers with inherent viscosities ranging from 0.3to 0.9dl/gm in methane sulfonic acid exhibited thermal stabilities near 600C under nitrogen and near 450C in air. Films of the polymers could be cast from methane sulfonic acid. (Author)