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http://hdl.handle.net/123456789/5861| Title: | Synthesis of new polyfunctional cage oligosilsesquioxanes and cyclic siloxanes by thiol-ene addition |
| Authors: | Rozga-Wijas, K. Chojnowski, J. |
| Keywords: | Thiol-ene addition Ligosilsesquioxane Cyclosiloxanes POSS Functionalized POSS 3-mercaptopropyltrimethoxysilane |
| Issue Date: | 5-Feb-2012 |
| Publisher: | University of Cape Coast |
| Abstract: | A novel octakis-2{[3-(trimethoxysilyl)propyl]thio}ethyl-octasilsesqioxane (POSS-M24) was synthesized by radical thiol-ene addition of 3-mercaptopropyltrimethoxysilane, (MPTMS) to octavinyloctasilsesquioxane, (POSS-V8) in the presence of 2,20 azobisisobutyronitryl under mild conditions (60 C, toluene solution). Nano-building POSS units bearing both types of groups, 2-[3-(trimethoxysilyl)propylthio]-ethyl and vinyl, pendant to the POSS-cage were obtained by partial addition of MPTMS to the vinyl functions. Finally the thiol-ene addition of MPTMS to 2,4,6-trivinyl-2,4,6-trimethylcyclotrisiloxane (V3) and 2,4,6,8-tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane (V4) were explored. The structures of the thiol-ene addition products were confirmed by 29 and mass Spectroscopy |
| Description: | 7p:, ill. |
| URI: | http://hdl.handle.net/123456789/5861 |
| ISSN: | 23105496 |
| Appears in Collections: | Department of Chemistry |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Synthesis_of_New_Polyfunctional_Cage_Oligosilsesqu.pdf | Article | 589.61 kB | Adobe PDF | View/Open |
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