POLYMERIZATION AND COPOLYMERIZATION OF TETRACYANOETHYLENE UNDER THE EFFECT OF POLYMERS WITH A CONJUGATED SYSTEM,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The feasibility was studied of using paramagnetic conjugated polymers as catalysts in the quasi-radical polymerization and copolymerization of low reactivity monomers such as tetracyanoethylene I, anthracene, naphthacene and pentacene. I was polymerized alone or copolymerized with anthracene, naphthacene, or pentacene. Soluble fractions of polyphenylene or polyanthryl were used as the catalyst in various concentrations so as to vary the unpaired spin concentration. It was found that the polymer or copolymer yield increased with spin concentration. In the case of the copolymerization of I with anthracene, the highest yield was obtained at a Ianthracene ratio of 41. The electrical conductivity of the copolymers was 5-6 orders of magnitude as high as that of anthracene, and had an activation energy of 8-11 kcalmol. Naphthacene, pentacene, and polyphenylene also copolymerized with I. A mechanism is proposed for the catalysis, which involves charge-transfer complex formation.
- Polymer Chemistry
- Solid State Physics