Two Undergraduate Experiments in Organic Polymers:: The Preparation of Polyacetylene and Telechelic Polyacetylene via Ring-Opening Metathesis Polymerization

• Autores: Eric J. Moorhead, Anna G. Wenzel
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 86, Nº 8 (August), 2009, págs. 973-975
• Idioma: inglés
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• Resumen

  • The ruthenium-catalyzed ring-opening metathesis polymerization of 1,3,5,7-cyclooctatetraene (COT) to produce polyacetylene and a telechelic polymer of polyacetylene is described in a series of two experiments for the undergraduate laboratory. In the first experiment, students plate-polymerize COT and dope the resulting polyacetylene with iodine to perform resistivity studies. In the second experiment, students mix COT with TBS-protected cis-2-butene diol as a chain transfer agent to produce a telechelic polyene, which is then studied via 1H NMR, IR, and UV–vis spectroscopy. Experimental details and the results of a test study of these experiments in an undergraduate laboratory class are discussed.