Synthesis of Strictly Alternating Siloxane Copolymers and Cyclics |
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Authors: | Kim-Anh Thi Nguyen Stephen R Clarke Janis Matisons Brian W Skelton Allan H White Elda Markovic |
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Affiliation: | 1. Mawson Institute, University of South Australia, GPO Box 2471, Mount Gambier, South Australia, 5001, Australia 2. Gelest Inc., 11 East Steel Road, Morrisville, PA, 19067, USA 3. University of Western Australia, Chemistry M313, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
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Abstract: | Herein we report a “One-Pot” synthetic route for preparing 1,1,5,5-tetramethyl-3,3,7,7-tetraphenyl cyclo-tetrasiloxane and strictly alternating poly(dimethylsiloxane-alt-diphenylsiloxane) copolymers by heterofunctional poly-condenzation of diphenylsilanediol with dichlorodimethylsilane in the presence of two different amines, triethylamine and diethylamine, respectively. The products have been characterized by single-crystal X-ray diffraction, 1H, 13C and 29Si nuclear magnetic resonance spectroscopy, thermogravimetric analysis and differential scanning calorimeter. |
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