Preparation and Solution Polymerization of Diacetylenes

Autor:	Angela M. Scates, Bruce A. Hathaway
Rok vydání:	1997
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Diacetylene chemistry Polymerization Polymer chemistry Organic chemistry Solution polymerization General Chemistry Polymer Education Polydiacetylenes
Zdroj:	Journal of Chemical Education. 74:111
ISSN:	1938-1328 0021-9584
Popis:	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.
Databáze:	OpenAIRE
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