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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/31502
Title: Synthesis and isolation of methacrylate- and acrylate-functionalized polyhedral oligomeric silsesquioxanes (T<inf>8</inf>, T<inf>10</inf>, and T <inf>12</inf>) and characterization of the relationship between their chemical structures and physical properties
Authors: Vuthichai Ervithayasuporn
Supansa Chimjarn
Mahidol University
Keywords: Chemistry
Issue Date: 18-Nov-2013
Citation: Inorganic Chemistry. Vol.52, No.22 (2013), 13108-13112
Abstract: Novel organic-inorganic hybrid nanobuilding blocks of methacrylate- and acrylate-functionalized polyhedral oligomeric silsesquioxanes were easily prepared via nucleophilic substitution on octakis(3-chloropropyl) octasilsesquioxane, using sodium methacrylate and sodium acrylate, respectively. From a practical standpoint, these cage-rearranged silsesquioxanes (T 8, T10, and T12) could be readily isolated in their pure form with conventional silica gel column chromatography. Octakis(3-propyl methacrylate)octasilsesquioxane (T8) is a colorless, crystalline solid with a melting point of 66.7-67.2 C, while other cage products are colorless viscous liquids at room temperature. Moreover, we report that the chemical structure/physical property relationship of silsesquioxane cages not only is dependent on the symmetry of the inorganic silsesquioxane core at a given temperature but also is dictated by the organic substituent mobility. Structures of the products were confirmed by 1H, 13C, and 29Si NMR spectroscopy and high resolution electrospray ionization mass spectrometry analysis. © 2013 American Chemical Society.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84888124800&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/31502
ISSN: 1520510X
00201669
Appears in Collections:Scopus 2011-2015

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