Properties of polyimide films doped with copper complexes

Abstract

Polyimide films based on either 3, 3′, 4, 4′‐benzophenone tetracarboxylic acid dianhydride or pyromellitic dianhydride with 4,4′‐oxydianiline have been doped with copper(I) and copper(II) complexes. High‐quality, flexible, glass‐cast films have been obtained which exhibit increased softening temperatures and lower polymer decomposition temperatures. The atmosphere and glass sides of the films are quite different. The copper(I) dopant is oxidized on the air side of the film, while the glass side contains predominantly copper (I). In the copper(II) case most of the copper appears on the air side as a silvery substance in the Cu(II) state. Chemical as well as ion etching can remove this material. Electrical resistivity of the copper(II)‐doped films is decreased by three to five orders of magnitude relative to the polymer alone.

Effect of metal halides on thermal, mechanical, and electrical properties of polypyromellitimide films

“…The potential for enhanced electrical conductivity has been demonstrated by doping with palladium complexes,8-10 copperll (11) and lithium. Polyimide films doped with SnCl,.…”

“…Polyimide films doped with SnCl,. 2H2012, Co (11) chloride, and Ni (11) chloride have been reported. 13 Additional work in this area of metal-doped polyimides is necessary to evaluate the extent of polyimide modification by a variety of different dopants.…”

“…Angelo, for the first time, briefly described the effect of addition of metal ions (in the form of coordination complexes) on the conductivity of polyimides.l Superior antistatic properties were reported for polyimide films loaded with LiCl or LiN03.2 Metal-doped polyimide films with improved high temperature adhesive proper tie^,^,^ increased electrical and thermal conductiv-it^,^ excellent thermal stability,6 and mechanical properties,' have been reported in literature. The potential for enhanced electrical conductivity has been demonstrated by doping with palladium complexes,8-10 copperll (11) and lithium. Polyimide films doped with SnCl,.…”

“…Thermal, mechanical, and electrical properties are of major interest in such modified polyimides. In this paper we report the effect of addition of Co (11) chloride, Sn (11) chloride, and Hg (11) chloride on the properties of polypyromellitimide films.…”

Study of fluorescent nanoparticle comprising iron DMAc complex embedded within polyimide matrix

“…The modification of polyimide (PI) with metals to control the properties of the polymers opens wide field that combines inorganic chemistry with polymer science. Organic-inorganic hybrid material represents new class of materials, which combine desirable physical and chemical properties that are characteristics of both organic and inorganic component within a single system [1][2][3].…”