Functional metal‐porphyrazine derivatives and their polymers, 2. Synthesis and properties of polyimides containing metal‐phthalocyanines

A novel class of polyimides (14) containing Mt(II)‐phthalocyanine rings has been synthesized by the solution condensation in N‐methyl‐2‐pyrrolidone (NMP) of Mt(II)‐[2,9or10(or2, 16or17)bis(3,4‐dicarboxybenzoyl)]phthalocyanine dianhydride (Mt(II)‐dahPc; Mt(II)=Co(II), Ni(II) and Cu(II); (2–4)) with aromatic diamines such as 4,4′‐methylenebis(aniline), followed by thermal imidization in vacuo at 200°C. The polyamides obtained were soluble in NMP and hexamethylphosphoric triamide, having inherent viscosities up to 0,7 dl·g−1. The polyimides were stable up to 350°C, and showed room temperature‐dc‐resistivities in the range of 1011 to 106 Ω·cm.