Accession Number : AD0652463

Title :   POLYMERIZATION AND COPOLYMERIZATION OF TETRACYANOETHYLENE UNDER THE EFFECT OF POLYMERS WITH A CONJUGATED SYSTEM,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Berlin,A. A. ; Matveeva,N. G.

Report Date : 23 JAN 1967

Pagination or Media Count : 13

Abstract : 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 I/anthracene ratio of 4/1. 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 kcal/mol. Naphthacene, pentacene, and polyphenylene also copolymerized with I. A mechanism is proposed for the catalysis, which involves charge-transfer complex formation.

Descriptors :   (*SEMICONDUCTORS, POLYMERS), (*NITRILES, POLYMERIZATION), (*POLYCYCLIC COMPOUNDS, POLYMERIZATION), ETHYLENES, COPOLYMERIZATION, CATALYSTS, ANTHRACENES, NUCLEAR SPINS, MAGNETIC MATERIALS, THERMAL STABILITY, ELECTRICAL CONDUCTIVITY, HEAT OF ACTIVATION, COMPLEX COMPOUNDS, USSR

Subject Categories : Polymer Chemistry
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE