A versatile synthetic path to thiol containing polysiloxanes |
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| Authors: | Elena Perju Simon J Dünki Dorina M Opris |
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| Institution: | 1. Swiss Federal Laboratories for Materials Science and Technology, Laboratory of Functional Polymers, Dübendorf, Switzerland;2. “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania;3. école Polytechnique Fédérale de Lausanne, Institut des Matériaux, Lausanne, Switzerland |
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| Abstract: | A synthetic strategy to polydimethylsiloxanes and polymethylsiloxanes containing thiol functions as end‐ or side‐groups, respectively, is presented. Such polymers are important starting materials for elastomeric networks and postpolymerization modifications. The synthesis starts either with vinyl end‐functionalized polydimethylsiloxanes or with polymethylvinylsiloxanes. The vinyl groups are reacted either with thioacetic acid or with a thioacetic acid/butanethiol mixture via a UV‐initiated thiol‐ene reaction to form the respective thioester quantitatively within few minutes. The thioesters are subsequently deprotected to the respective thiols by reduction with LiAlH4. The resulting thiol containing polysiloxanes can be used for the formation of networks or another functionalization. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 2940–2948 |
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| Keywords: | inorganic polymers functionalization of polymers polysiloxanes silicones thiols thiol‐ene addition |
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