Springer Online Journal Archives 1860-2000
Chemistry and Pharmacology
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Summary Cyclopolymerization was carried out by various catalyst systems. MoCl5-based catalyst systems are more effective for the polymerization of 4,4-diphenoxy-1,6-heptadiyne than WCl6-based catalyst systems. Polymerization of 4,4-diphenoxy-1,6-heptadiyne leads to soluble, purple colored polymer with number average molecular weight (Mn) of 3.6x104-5.2x104.1H- and13C-MNR, IR,and UV-visible spectra of the resulting polymer indicated that poly(4,4-diphenoxy-1,6-hepatadiyne) possesses a polyene structure presumably with cyclic recurring units in the polymer backbone. Poly(4,4-diphenoxy-1,6-heptadiyne) had good thermal and oxidative stability, and good solubility in organic solvents. The electrical conductivity of iodine-doped polymer was 10−3-10−2 S/cm.
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