Conjugated Substituted Ionic Polyacetylenes
Abstract
A new method for polymerization of the acetylenic bond in 2-ethynyl- pyridine and its trimethylsilyl derivative is described. The acetylenic triple bond is activated by quaternization of the pyridine nitrogen by methyltrifluoromethane-sulfonate (triflate). The resulting N- methylethynylpyzidinium triflate salts polymerize readily to the corresponding poly(N-methylethynylpyridinium acetylene)triflates when treated with a nucleophilic initiator such as pyridine, or with a free radical initiator (AIBN) . The product polymers are substituted ionic polyacetylenes of low DP with extensive backbone conjugation. Spectral data indicate that the conjugation in these systems is, by far, the highest observed for substituted polyacetylenes.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 05, 1993
- Accession Number
- ADA264702
Entities
People
- Alexandre Blumstein
Organizations
- University of Massachusetts Lowell