The polymerization of phenylacetylene in carbon tetrachloride in the presence of light-activated W(CO)6
Date
1989-12Author
Park, S.
Serwon, S.
Langner, Andreas
Ehrlich, Paul
Metadata
Show full item recordAbstract
A study of the apparent reaction rate constants of phenylacetylene polymerized in CCl4 in the presence of light-activated W(CO)6 and of the molecular weight of the resulting polymer indicates that the propagating centers are conserved to high monomer conversions, though some chain transfer to monomer occurs, limiting molecular weights to about 100,000. Although solutions of the polymer are deep red in color, the molecular conformation is more coil-like than rod-like. The NMR spectra suggest that the steric purity of the polymer is limited, so that it can only be referred to as trans-rich polyphenylacetylene, confirming other results on tungsten-catalyzed polyphenylacetylene.