Preparation and Solution Polymerization of Diacetylenes
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Bruce A. Hathaway [1] ; Angela M. Scates [1]
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[1] Southeast Missouri State University
Southeast Missouri State University
Township of Cape Girardeau, Estados Unidos
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 74, Nº 1 (January), 1997, págs. 111-111
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Polymeric Diacetylenes ("Polydiacetylenes", or PDA's) are being investigated for their Non-Linear Optical (NLO) properties. PDA's have also been advocated by Patel and Yang (J. Chem. Educ. 1983, 60, 181-5) as a system for teaching polymer science, although these authors did not publish a synthesis of the diacetylene precursor to their PDA in this article. Most published student laboratory syntheses of symmetrical diacetylenes follow Hay's procedure (J. Org. Chem. 1962, 27, 3320-1), with some modifications for using air as a source of oxygen. We report a simpler procedure, which has been useful in preparing a variety of diacetylenes. Yields range from 35-70%, and may be improved by increasing the reaction time. In addition, we have developed conditions suitable for solution polymerization of these diacetylenes to PDA's, using short-wave UV light. These conditions complement the solid phase polymerization conditions described by Patel and Yang.
